U.S. patent application number 16/127216 was filed with the patent office on 2019-03-14 for deodorizing nylon 6 fiber and preparation method thereof.
The applicant listed for this patent is CHAIN YARN CO., LTD.. Invention is credited to Yen-Hsiao CHEN, Kuan-Jung HUANG, Chun-Hung LIAO, Chuan-Shing LIN.
Application Number | 20190078236 16/127216 |
Document ID | / |
Family ID | 65034656 |
Filed Date | 2019-03-14 |
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United States Patent
Application |
20190078236 |
Kind Code |
A1 |
LIAO; Chun-Hung ; et
al. |
March 14, 2019 |
DEODORIZING NYLON 6 FIBER AND PREPARATION METHOD THEREOF
Abstract
A preparation method of a deodorizing nylon 6 fiber including
providing a fabricating step of deodorizing nylon 6 chips and
performing a spinning step. A porous powder of citrate is mixed
with a caprolactam powder so as to obtain a raw material of a
deodorizing chip. The raw material of the deodorizing chip is
ground so as to obtain a size mixture of a deodorizing nylon 6. The
size mixture of the deodorizing nylon 6 is polymerized so as to
obtain the deodorizing nylon 6 chips. In the spinning step, a
spinning material including the deodorizing nylon 6 chips is
provided. The spinning material is spun so as to obtain a
deodorizing nylon 6 fiber.
Inventors: |
LIAO; Chun-Hung; (Yunlin
County, TW) ; CHEN; Yen-Hsiao; (Yunlin County,
TW) ; LIN; Chuan-Shing; (Yunlin County, TW) ;
HUANG; Kuan-Jung; (Kaohsiung City, TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
CHAIN YARN CO., LTD. |
Taichung City |
|
TW |
|
|
Family ID: |
65034656 |
Appl. No.: |
16/127216 |
Filed: |
September 10, 2018 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
D01F 1/103 20130101;
C08G 69/16 20130101; D01G 99/005 20130101; D01F 6/60 20130101; D01F
1/04 20130101; D01D 1/065 20130101; D01D 1/00 20130101; D01F 6/80
20130101; C08G 69/06 20130101; D01D 1/02 20130101; D01H 13/28
20130101 |
International
Class: |
D01F 6/60 20060101
D01F006/60; D01F 1/04 20060101 D01F001/04; D01D 1/02 20060101
D01D001/02; D01D 1/06 20060101 D01D001/06; D01H 13/28 20060101
D01H013/28; D01G 99/00 20060101 D01G099/00 |
Foreign Application Data
Date |
Code |
Application Number |
Sep 11, 2017 |
TW |
106131051 |
Claims
1. A preparation method of a deodorizing nylon 6 fiber, comprising:
providing a fabricating step of deodorizing nylon 6 chips,
comprising: performing a mixing step, wherein a porous powder of
citrate is mixed with a caprolactam powder so as to obtain a raw
material of a deodorizing chip, a weight ratio of the porous powder
of citrate ranges from 2% to 6% based on a weight ratio of the raw
material of the deodorizing chip as 100%, and a weight ratio of the
caprolactam powder ranges from 94% to 98% based on the weight ratio
of the raw material of the deodorizing chip as 100%; performing a
nano-grinding step, wherein the raw material of the deodorizing
chip is ground so as to obtain a size mixture of a deodorizing
nylon 6, and an average diameter of the size mixture of the
deodorizing nylon 6 ranges from 100 nm to 200 nm; performing a
granulated polymerizing step, wherein the size mixture of the
deodorizing nylon 6 is polymerized so as to obtain the deodorizing
nylon 6 chips; performing a viscosity adjusting step, wherein a
relative viscosity of the deodorizing nylon 6 chips is adjusted to
a range from 2.20 mPas to 2.30 mPas; and performing a water content
adjusting step, wherein a water content ratio of the deodorizing
nylon 6 chips is adjusted to a range from 350 ppm to 550 ppm; and
performing a spinning step, comprising: providing a spinning
material, wherein the spinning material comprises the deodorizing
nylon 6 chips performed the viscosity adjusting step and the water
content adjusting step; and performing a melt fluxing step, wherein
the spinning material is spun under a temperature ranging from
255.degree. C. to 265.degree. C. so as to obtain a deodorizing
nylon 6 fiber.
2. The preparation method of claim 1, wherein the weight ratio of
the porous powder of citrate is 5% based on the weight ratio of the
raw material of the deodorizing chip as 100%, and the weight ratio
of the caprolactam powder is 95% based on the weight ratio of the
raw material of the deodorizing chip as 100%.
3. The preparation method of claim 1, wherein the spinning material
further comprises a powder of titanium dioxide, and a weight ratio
of the powder of titanium dioxide is greater than 0 and less than
or equal to 7.5 based on the weight ratio of the deodorizing nylon
6 chips as 100%.
4. The preparation method of claim 1, wherein the spinning material
is melted in the melt fluxing step so as to obtain a spinning
liquid, and the spinning step further comprises: performing a fiber
extracting step, wherein the fiber extracting step is for
extracting the spinning liquid so as to obtain a nascent fiber of
the deodorizing nylon 6, a difference between a relative viscosity
of the nascent fiber of the deodorizing nylon 6 and the relative
viscosity of the deodorizing nylon 6 chips performed the viscosity
adjusting step is .DELTA.RV, and the following condition is
satisfied: 0<.DELTA.RV<0.1.
5. The preparation method of claim 1, wherein the spinning step
further comprises: performing a cooling step, wherein the cooling
step is performed under a temperature ranging from 18.degree. C. to
22.degree. C. and then the nascent fiber of the deodorizing nylon 6
is solidified so as to form a solidified fiber of the deodorizing
nylon 6.
6. The preparation method of claim 5, wherein the spinning step
further comprises: performing a drawing step, wherein the
solidified fiber of the deodorizing nylon 6 is drawn with a draw
ratio ranging from 1.2% to 1.5%.
7. The preparation method of claim 6, wherein the drawing step
further comprises: performing a heating step, wherein the
solidified fiber of the deodorizing nylon 6 is heat set under a
temperature ranging from 145.degree. C. to 200.degree. C.
8. The preparation method of claim 7, wherein the spinning step
further comprises: performing a winding step, wherein the
solidified fiber of the deodorizing nylon 6 performed the heating
step is wound in a speed ranging from 3200 m/min to 4800 m/min, and
a physical property of the solidified fiber of the deodorizing
nylon 6 is changed by the drawing step and the winding step, so
that the solidified fiber of the deodorizing nylon 6 is transformed
into the deodorizing nylon 6 fiber.
9. The preparation method of claim 8, wherein the physical property
of the solidified fiber of the deodorizing nylon 6 changed is a
strength or an elongation.
10. A deodorizing nylon 6 fiber made by the preparation method of
claim 1, wherein a denier per filament of the deodorizing nylon 6
fiber ranges from 0.5 dpf to 6 dpf, and a strength of the
deodorizing nylon 6 fiber ranges from 3.0 g/d to 6.8 g/d.
11. The deodorizing nylon 6 fiber of claim 10, wherein an
extensibility of the deodorizing nylon 6 fiber ranges from 40% to
50%.
Description
RELATED APPLICATIONS
[0001] This application claims priority to Taiwan Application
Serial Number 106131051, filed Sep. 11, 2017, which is herein
incorporated by reference.
BACKGROUND
Technical Field
[0002] The present disclosure relates to a nylon 6 fiber and a
preparation method thereof. More particularly, the present
disclosure relates to a nylon 6 fiber having a deodorizing function
and a preparation method thereof.
Description of Related Art
[0003] Textiles made from processes of the textile industry are
porous materials which can absorb sweat, sebum and other wastes
discharged thereof when worn by a user, and the aforementioned
wastes will be further decomposed and utilized by bacteria, fungus
and other microorganisms hosted on the surface of the human body.
However, during the process of microbial decomposition and
utilization of the wastes, lots of byproducts will be produced and
accompanied with unpleasant odors. It has not only health concerns
but also a possibility to affect the interpersonal relationships
due to the unpleasant odors. Therefore, because the health
awareness and the living standard are both improved in the modern
society, demands for woven materials with antibacterial and
deodorizing properties are rapidly increasing.
[0004] Currently, antibacterial and deodorizing fibers are obtained
mainly by modifying the chemical or physical properties of fibers,
or the antibacterial agents will be coated on the fibers so as to
suppress the growth of microorganisms, so that the demands for
preventing the generation of the unpleasant odors can be satisfied.
In the aforementioned manufacturing methods, mixing the
antibacterial agents with a mother liquor of the fiber and then for
spinning is the most widely used and relatively simple method.
[0005] In the selection of antibacterial agents, the silver-based
antibacterial agents are commonly used in the conventional
antibacterial and deodorizing fibers, wherein the antibacterial
agents with nano-silver particles are the most popular. The
nano-silver particles have high stability and can be added into the
mother liquor of the fiber and then made into antibacterial fibers
by spinning or other manufacturing methods. However, because the
surface activity of the nano-silver particles is high, the
nano-silver particles is easy to aggregate in the fiber material
and then form a polymer in the textile process due to the high
temperature, so that an additional dispersing agent is need to add
into the fiber mother liquor so as to enhance the dispersal
activity of the nano-silver particles. Thus, it is not only
increasing the manufacturing cost of the antibacterial textiles,
but also increasing the difficulties of the process thereof.
[0006] In order to solve the aforementioned problems, there is an
antibacterial and deodorizing fiber uses a non-silver antibacterial
agent as an antibacterial and deodorizing additive, for example,
mixing a p-tolyl-diiodomethylhydrazine having a bactericidal
function with a plastic masterbatch so as to form an antibacterial
fiber, or using titanium dioxide, tourmaline powder and bamboo
charcoal as additives for antibacterial and deodorizing functions.
However, in the present market, deodorizing demands of the textiles
with deodorizing functions are always achieved by their
antibacterial ability. Because the variety of microorganisms and
odors, different antibacterial agents on different microorganisms
are also with different antibacterial effects. Furthermore,
although the growth of bacteria can be inhibited by the textile
with antibacterial ability, it can only achieve the odor prevention
effect without the odor removal effect.
[0007] Therefore, how to develop an antibacterial fiber with
deodorizing functions so as to improve the application efficiency
and the scope of use thereof has become the major goal of related
industry.
SUMMARY
[0008] According to one aspect of the present disclosure, a
preparation method of a deodorizing nylon 6 fiber including
providing a fabricating step of deodorizing nylon 6 chips and
performing a spinning step. The fabricating step includes the
following steps. A mixing step is performed, wherein a porous
powder of citrate is mixed with a caprolactam powder so as to
obtain a raw material of a deodorizing chip, wherein a weight ratio
of the porous powder of citrate ranges from 2% to 6% based on a
weight ratio of the raw material of the deodorizing chip as 100%,
and a weight ratio of the caprolactam powder ranges from 94% to 98%
based on the weight ratio of the raw material of the deodorizing
chip as 100%. A nano-grinding step is performed, wherein the raw
material of the deodorizing chip is ground so as to obtain a size
mixture of a deodorizing nylon 6, and an average diameter of the
size mixture of the deodorizing nylon 6 ranges from 100 nm to 200
nm. A granulated polymerizing step is performed, wherein the size
mixture of the deodorizing nylon 6 is polymerized so as to obtain
the deodorizing nylon 6 chips. A viscosity adjusting step is
performed, wherein a relative viscosity of the deodorizing nylon 6
chips is adjusted to a range from 2.20 mPas to 2.30 mPas. A water
content adjusting step is performed, wherein a water content ratio
of the deodorizing nylon 6 chips is adjusted to a range from 350
ppm to 550 ppm. The spinning step includes the following steps. A
spinning material is provided, wherein the spinning material
includes the deodorizing nylon 6 chips performed the viscosity
adjusting step and the water content adjusting step. A melt fluxing
step is performed, wherein the spinning material is spun under a
temperature ranging from 255.degree. C. to 265.degree. C. so as to
obtain the deodorizing nylon 6 fiber.
[0009] According to another aspect of the present disclosure, a
deodorizing nylon 6 fiber is made by the preparation method
according to the aforementioned aspect, wherein a denier per
filament of the deodorizing nylon 6 fiber ranges from 0.5 dpf to 6
dpf, and a strength of the deodorizing nylon 6 fiber ranges from
3.0 g/d to 6.8 g/d.
BRIEF DESCRIPTION OF THE DRAWINGS
[0010] The present disclosure can be more fully understood by
reading the following detailed description of the embodiment, with
reference made to the accompanying drawings as follows:
[0011] FIG. 1 is a flow chart of a preparation method of a
deodorizing nylon 6 fiber according to one embodiment of the
present disclosure.
[0012] FIG. 2 is a flow chart of Step 300 of another embodiment of
the present disclosure.
[0013] FIG. 3 is a schematic view of a spinning apparatus used in
Step 300 of FIG. 2.
DETAILED DESCRIPTION
Preparation Method of Deodorizing Nylon 6 Fiber
[0014] Please refer to FIG. 1, which is a flow chart of a
preparation method 100 of a deodorizing nylon 6 fiber according to
one embodiment of the present disclosure. The preparation method
100 of the deodorizing nylon 6 fiber includes Step 200 and Step
300.
[0015] In Step 200, a fabricating step of deodorizing nylon 6 chips
is provided, and Step 200 includes Step 210, Step 220, Step 230,
Step 240 and Step 250.
[0016] In Step 210, a mixing step is performed, wherein a porous
powder of citrate is mixed with a caprolactam powder so as to
obtain a raw material of a deodorizing chip. A weight ratio of the
porous powder of citrate ranges from 2% to 6% based on a weight
ratio of the raw material of the deodorizing chip as 100%, and a
weight ratio of the caprolactam powder ranges from 94% to 98% based
on the weight ratio of the raw material of the deodorizing chip as
100%. More preferably, the weight ratio of the porous powder of
citrate is 5% based on the weight ratio of the raw material of the
deodorizing chip as 100%, the weight ratio of the caprolactam
powder is 95% based on the weight ratio of the raw material of the
deodorizing chip as 100%, and the aforementioned caprolactam powder
can be a commercially available product.
[0017] In Step 220, a nano-grinding step is performed, wherein the
raw material of the deodorizing chip is ground so as to obtain a
size mixture of a deodorizing nylon 6, and an average diameter of
the size mixture of the deodorizing nylon 6 ranges from 100 nm to
200 nm. The porous powder of citrate and the caprolactam powder can
be refined into the size mixture in nanometer level in the
nano-grinding step so as to improve the dispersibility of the
porous powder of citrate in the caprolactam powder, so that the
deodorizing ability of the deodorizing nylon 6 fiber can be further
enhanced. Furthermore, the pressure increasing condition of the
size mixture can be effectively stabilized when the average
diameter of the size mixture of the deodorizing nylon 6 ranges from
100 nm to 200 nm.
[0018] In Step 230, a granulated polymerizing step is performed,
wherein the size mixture of the deodorizing nylon 6 is polymerized
so as to obtain the deodorizing nylon 6 chips, and the
aforementioned deodorizing nylon 6 chips can be further physically
modified so as to use in the following spinning processes.
[0019] In Step 240, a viscosity adjusting step is performed,
wherein a relative viscosity of the deodorizing nylon 6 chips is
adjusted to a range from 2.20 mPas to 2.30 mPas. When the relative
viscosity of the deodorizing nylon 6 chips is greater than 3.0
mPas, the flow rate of the spinning liquid is slow thereby. As a
result, the residence time of the spinning liquid in the manifold
is prolonged, so that it is unfavorable for spinning. When the
relative viscosity of the deodorizing nylon 6 chips is less than
2.2 mPas, the strength of the deodorizing nylon 6 fiber made by the
spinning liquid is low. Therefore, a relatively stable spinning
effect can be obtained when the relative viscosity of the
deodorizing nylon 6 chips is between 2.20 mPas to 2.30 mPas.
[0020] In Step 250, a water content adjusting step is performed,
wherein a water content ratio of the deodorizing nylon 6 chips is
adjusted to a range from 350 ppm to 550 ppm. Therefore, a proper
water content ratio of the deodorizing nylon 6 chips can be
obtained by adjusting the water content thereof, so that better
physical spinning properties can be obtained, and the probability
of breaking or degrading of the deodorizing nylon 6 fiber can be
reduced.
[0021] In Step 300, a spinning step is performed, and Step 300
includes Step 310 and Step 320.
[0022] In Step 310, a spinning material is provided, wherein the
spinning material includes the deodorizing nylon 6 chips performed
the viscosity adjusting step (that is, Step 240) and the water
content adjusting step (that is, Step 250). Furthermore, the
spinning material can further include a powder of titanium dioxide,
and a weight ratio of the powder of titanium dioxide is greater
than 0 and less than or equal to 7.5 based on the weight ratio of
the deodorizing nylon 6 chips as 100%. The aforementioned powder of
titanium dioxide is a conventional matting agent, thus a
specification the deodorizing nylon 6 fiber made by the deodorizing
nylon 6 chips according to the present disclosure can be semi-dull
or full-dull by adding titanium dioxide into the spinning material.
Therefore, the applications of the deodorizing nylon 6 fiber of the
present disclosure can be further expanded.
[0023] In Step 320, a melt fluxing step is performed, wherein the
spinning material is spun under a temperature ranging from
255.degree. C. to 265.degree. C. so as to obtain a deodorizing
nylon 6 fiber.
[0024] Please refer to FIG. 2, which is a flow chart of Step 300 of
another embodiment of the present disclosure. In addition to Step
310 and Step 320, Step 300 further includes Step 330, Step 340,
Step 350 and Step 360.
[0025] In Step 330, a fiber extracting step is performed. In
detail, the spinning material is melted in Step 320 so as to obtain
a spinning liquid, and the fiber extracting step is for extracting
the spinning liquid so as to obtain a nascent fiber of the
deodorizing nylon 6. A difference between a relative viscosity of
the nascent fiber of the deodorizing nylon 6 and the relative
viscosity of the deodorizing nylon 6 chips performed Step 240 is
.DELTA.RV, wherein the relative viscosity of the nascent fiber of
the deodorizing nylon 6 is RV1, the relative viscosity of the
deodorizing nylon 6 chips performed Step 240 is RV2, and .DELTA.RV
is the difference between RV1 and RV2 (That is,
.DELTA.RV=RV1-RV2.), and the following condition can be satisfied:
0<.DELTA.RV<0.1. Therefore, it is favorable to spin at a high
speed, and the spinning condition of the deodorizing nylon 6 fiber
is the best.
[0026] In Step 340, a cooling step is performed, wherein the
cooling step can be performed under a temperature ranging from
18.degree. C. to 22.degree. C. and then the nascent fiber of the
deodorizing nylon 6 is solidified so as to form a solidified fiber
of the deodorizing nylon 6. When the temperature is less than
18.degree. C., the cooling rate of the nascent fiber of the
deodorizing nylon 6 is too fast, thus the arrangement of
caprolactam monomers will be affected, so that the strength of the
deodorizing nylon 6 fiber is not good as expected. When the
temperature is greater than 22.degree. C., the cooling of the
nascent fiber of the deodorizing nylon 6 is insufficient, thus the
solidified fiber of the deodorizing nylon 6 is not easy to be drawn
in the following spinning processes, and the spinning efficiency
will be greatly reduced.
[0027] In Step 350, a drawing step is performed, wherein the
solidified fiber of the deodorizing nylon 6 is drawn with a draw
ratio ranging from 1.2% to 1.5%. The draw ratio is a ratio of an
output speed to an input speed of the drawing step. When the draw
ratio is less than 1.2%, the probability of the fiber break is
increased, and when the draw ratio is greater than 1.5%, the
solidified fiber of the deodorizing nylon 6 is easy to be drawn
excessively and tends to break. Furthermore, Step 350 can further
include Step 351. In Step 351, a heating step is performed, wherein
the solidified fiber of the deodorizing nylon 6 is heat set under a
temperature ranging from 145.degree. C. to 200.degree. C. When the
temperature is excessively high, the solidified fiber of the
deodorizing nylon 6 will shake vigorously on the godet roller
assembly. Accordingly, the tension is too small, and it is
unfavorable for spinning. When the temperature is excessively low,
the solidified fiber of the deodorizing nylon 6 is heat set
insufficiently. Accordingly, the stress in the molecular chain is
increased, and it is unfavorable to form a spinning cake.
[0028] In Step 360, a winding step is performed, wherein the
solidified fiber of the deodorizing nylon 6 performed the heating
step is wound in a speed ranging from 3200 m/min to 4800 m/min, and
a physical property of the solidified fiber of the deodorizing
nylon 6, such as a strength or an elongation is changed by the
drawing step (that is, Step 350) and the winding step (that is,
Step 360), so that the solidified fiber of the deodorizing nylon 6
is transformed into the deodorizing nylon 6 fiber which is suitable
for the following spinning processes.
[0029] Please refer to FIG. 3, which is a schematic view of a
spinning apparatus 500 used in Step 300 in FIG. 2. As shown in FIG.
3, the spinning apparatus 500 includes a feeding tank 510, a servo
motor 520, an extruder 530, a manifold 540, a spinning beam 550, a
cooling device 560, a draw device 570 and a winding device 580.
[0030] In Step 310, the deodorizing nylon 6 chips performed the
viscosity adjusting step (that is, Step 240) and the water content
adjusting step (that is, Step 250) and a powder of titanium dioxide
are added into the feeding tank 510 and then transmitted into the
extruder 530.
[0031] In Step 320, the deodorizing nylon 6 chips and the powder of
titanium dioxide are melted and fluxed in the extruder 530 under a
temperature ranging from 255.degree. C. to 265.degree. C. so as to
form a spinning liquid. Next, the spinning liquid is pressed out of
the extruder 530 by the servo motor 520 so that the spinning liquid
will enter the manifold 540, wherein a temperature of the manifold
540 ranges from 260.degree. C. to 270.degree. C. so as to prevent
the spinning liquid from cooling down and solidifying in the
manifold 540 before the spinning liquid enters the spinning beam
550.
[0032] In Step 330, the spinning liquid in the spinning beam 550 is
distributed by a metering pump (not shown) to each spinneret (not
shown) via tubes so as to form the nascent fiber A of the
deodorizing nylon 6, wherein a temperature of the spinning beam 550
is controlled in a range from 260.degree. C. to 270.degree. C.
Furthermore, there is a windless zone (not shown) between the
spinning beam 550 and the cooling device 560, and the nascent fiber
A of the deodorizing nylon 6 can be cooled down slowly in the
windless zone so as to prevent the crystallization of fibers from
affecting by external forces such as air flow, so that the strength
of the nascent fiber A of the deodorizing nylon 6 can be further
enhanced.
[0033] In Step 340, the nascent fiber A of the deodorizing nylon 6
is cooled by the cooling device 560, wherein a cooling gas is
provided by the cooling device 560, and a temperature of the
cooling gas ranges from 18.degree. C. to 22.degree. C. so as to
cool and solidify the nascent fiber A of the deodorizing nylon 6
and then form the solidified fiber of the deodorizing nylon 6.
Furthermore, the nascent fiber A of the deodorizing nylon 6 are
bundled and oiled via an oiling nozzle (not shown) or an oiling
roll (not shown) so that the nascent fiber A of the deodorizing
nylon 6 can be bundled and lubricated.
[0034] In Step 350, the solidified fiber of the deodorizing nylon 6
is drawn and performed Step 351 by the draw device 570 so as to
heat set the solidified fiber of the deodorizing nylon 6. As shown
in FIG. 3, the draw device 570 includes a first godet roller
assembly 571, a second godet roller assembly 572 and a third godet
roller assembly 573, wherein at least one of the first godet roller
assembly 571, the second godet roller assembly 572 and the third
godet roller assembly 573 has a heating function, so that the
solidified fiber of the deodorizing nylon 6 can be heat set, and
the solidified fiber of the deodorizing nylon 6 can be extended in
multiple stages so as to change the physical properties such as a
strength or an elongation.
[0035] In Step 360, the solidified fiber of the deodorizing nylon 6
performed Step 350 can be wound on a paper tube in a speed ranging
from 3200 m/min to 4800 m/min by the winding device 580 so as to
form a spinning cake. After performing Step 350 and Step 360, the
physical property of the solidified fiber of the deodorizing nylon
6 has been changed, and the solidified fiber of the deodorizing
nylon 6 is transformed into the deodorizing nylon 6 fiber which is
suitable for the following spinning processes.
Deodorizing Nylon 6 Fiber
[0036] The deodorizing nylon 6 fiber of the present disclosure is
made by the preparation method 100 of the deodorizing nylon 6
fiber, wherein a denier per filament of the deodorizing nylon 6
fiber ranges from 0.5 dpf to 6 dpf, a strength of the deodorizing
nylon 6 fiber ranges from 3.0 g/d to 6.8 g/d, and an extensibility
of the deodorizing nylon 6 fiber ranges from 40% to 50%. The
deodorizing nylon 6 fiber of the present disclosure has an
excellent deodorizing ability and can be widely used in related
fields.
Examples and Comparative Examples
1. Dispersibility Test of Size Mixture of Deodorizing Nylon 6
[0037] In the present experiment, the size distribution and the
pressure increasing condition of the porous powder of citrate and
the caprolactam powder of the size mixture of the deodorizing nylon
6 performed the nano-grinding step are analyzed so as to evaluate
the dispersibility of the nanoparticles.
[0038] In the test of the size distribution, the average particle
size and the particle size distribution of the size mixture of the
deodorizing nylon 6 are analyzed by a laser particle size analyzer.
In the pressure increasing test, the deodorizing nylon 6 chips are
melted, and then the melt of the deodorizing nylon 6 chips is
injected into a single screw screen press equipped with a 25.mu.
filter so as to observe the pressure change thereof.
[0039] The detailed data of the average particle size and the
dispersibility of the porous powder of citrate mixed with different
percentage of the caprolactam powder and then performed nano-ground
are shown in Table 1. In Example 1 (Em 1), a weight ratio of the
porous powder of citrate is 3% and a weight ratio of the
caprolactam powder is 97% based on a weight ratio of the raw
material of the deodorizing chip as 100%. In Example 2, a weight
ratio of the porous powder of citrate is 5% and a weight ratio of
the caprolactam powder is 95% based on a weight ratio of the raw
material of the deodorizing chip as 100%. Furthermore, the present
experiment further includes comparative examples. In Comparative
Example 1 (CEm 1), a weight ratio of the porous powder of citrate
is 7% and a weight ratio of the caprolactam powder is 93%, and in
Comparative Example 2 (CEm 2), a weight ratio of the porous powder
of citrate is 9% and a weight ratio of the caprolactam powder is
91%. Moreover, in the aforementioned Examples 1-2 and Comparative
Examples 1-2, the size mixtures of the deodorizing nylon 6 of
Example 1, Example 2 and Comparative Example 1 are performed the
nano-grinding step, respectively, and the size mixture of
Comparative Example 2 is not performed the nano-grinding step so as
to evaluate the effects of the nano-grinding step to the average
particle size and the dispersibility of the size mixture of the
deodorizing nylon 6. Moreover, the size mixtures of the deodorizing
nylon 6 of Example 1, Example 2, Comparative Example 1 and
Comparative Example 2 are stood for five minutes so as to observe
whether the precipitation occurs or not.
TABLE-US-00001 TABLE 1 Porous powder Average of Caprolactam
particle citrate powder size (%) (%) (nm) Dispersibility
Precipitation Em 1 3 97 199 Good N Em 2 5 95 187 Excellent N CEm 1
7 93 3635 Worse Y CEm 2 9 91 5338 Worst Y
[0040] As shown in Table 1, after performing the nano-grinding
step, both of the average particle sizes of Example 1 and Example 2
are falling in a range from 100 nm to 200 nm, and the average
particle sizes of Comparative Example 1 and Comparative Example 2
are 3635 nm and 5338 nm, respectively, wherein the Comparative
Example 2 is without performing the nano-grinding step. It shows
that the porous powder of citrate and the caprolactam powder can be
ground effectively by the nano-grinding step, and the average
particle size of the size mixture of the deodorizing nylon 6
thereof can fall between 100 nm to 200 nm so as to enhance the
dispersibility of the porous powder of citrate and the caprolactam
powder.
[0041] In the aspect of dispersibility, the dispersibility of the
size mixture of the deodorizing nylon 6 of Example 2 is best, the
dispersibility of Example 1 is also good, and there is no
precipitation of the size mixtures of the deodorizing nylon 6 of
Example 1 and Example 2 after being stood for five minutes.
However, both of the dispersibility of size mixtures of the
deodorizing nylon 6 of Comparative Example 1 and Comparative
Example 2 are worse than Example 1 and Example 2, and a
precipitation can be seen by eyes in Comparative Example 1 and
Comparative Example 2 after being stood for five minutes. Thus, the
porous powder of citrate having a deodorizing function can be mixed
with the caprolactam powder uniformly according to the mixing ratio
of the present disclosure and provide a preferred dispersibility so
as to facilitate the preparation of the deodorizing nylon 6
fiber.
2. Property Analysis of Deodorizing Nylon 6 Chips
[0042] The present experiment is for measuring the viscosity, the
water content, the concentration of amino groups and the ash
content of the deodorizing nylon 6 chips so as to analyze the
physical properties of the deodorizing nylon 6 chips of the present
disclosure.
[0043] In the analysis of the relative viscosity, 0.25 g of the
deodorizing nylon 6 chips is dissolved in 98 wt % sulfuric acid,
wherein the ratio of the sample of the deodorizing nylon 6 chips to
the sulfuric acid is 1 g:100 ml. The flowing time (T1) of the
sulfuric acid with the dissolving sample is measured via an Ostwald
viscosimeter at 25.degree. C. The flowing time (T2) of the sulfuric
acid without the sample is measured via the Ostwald viscosimeter at
25.degree. C. The relative viscosity in sulfuric acid is the ratio
of T1 and T2, i.e., the relative viscosity in sulfuric acid equals
to T1/T2.
[0044] In the analysis of the water content, the water content of
the deodorizing nylon 6 chips is measured by a Karl Fisher's
coulometric titrator (trace moisture measurement device AQ-2000;
moisture evaporating device EV-200; made by the Hiranuma Sangyo
Co., Ltd), wherein the moisture evaporating temperature is
180.degree. C. under dry nitrogen atmosphere.
[0045] In the analysis of the concentration of amino groups, 1 g
sample of the deodorizing nylon 6 chips is added into 40 ml of a
solution with phenol and methanol, and then the solution is stirred
until the sample is totally dissolved, and the concentration of
amino groups of the deodorizing nylon 6 chips is detected by the
acid-base titration method. The aforementioned acid-base titration
method is titrated with aqueous hydrochloric acid (HCl), and
bromothymol blue aqueous solution (BTB) is used as an indicator so
as to detect the equivalent point of the sample, and the
concentration of amino groups in the sample is calculated
accordingly.
[0046] In the analysis of the ash content, 5 g sample of the
deodorizing nylon 6 chips is added in to a crucible and then heated
in a furnace at 800.degree. C. for 2 hours. After heating for 2
hours, the crucible is cooled down in a dryer for 30 minutes, and a
weight of the crucible is further measured so as to calculate the
ash content of the sample indirectly. The formula which is for
calculating the ash content is shown below:
( weight of crucible after heating - weight of empty crucible ) (
weight of empty crucible + weight of sample ) .times. 100 % .
##EQU00001##
[0047] In detail, Example 3 (Em 3) and Comparative Example 3 (CEm
3) are used in the present experiment, wherein the deodorizing
nylon 6 chips of the Example 3 is made by the preparation method of
the deodorizing nylon 6 fiber of the present disclosure, and the
nylon 6 chips used in Comparative Example 3 are commercially
available product. The preparation method of conventional nylon 6
chips is a conventional technology and will not be described
herein.
[0048] The detailed data of the property analysis of the nylon 6
chips of Example 3 and Comparative Example 3 are shown in Table 2.
As shown in Table 2, the relative viscosity of Example 3 is 2.23
mPas, which only has a small difference compared to 2.45 mPas of
Comparative Example 3. In the aspect of water content, when the
water content of a particle is less than 500 ppm, it is favorable
for improving the efficiency of spinning, wherein the water content
of Example 3 is 440 ppm, and the water content of Comparative
Example 3 is 480 ppm. Furthermore, the concentrations of amino
groups of Example 3 and Comparative Example 3 are almost equal to
each other, and the ash contents of Example 3 and Comparative
Example 3 are also almost equal to each other. It shows that the
physical properties of the deodorizing nylon 6 chips made by the
preparation method of the deodorizing nylon 6 fiber of the present
disclosure is similar with the physical properties of the
conventional nylon 6 chips, and the deodorizing nylon 6 chips of
the present disclosure can be further applied in the following
spinning processes.
TABLE-US-00002 TABLE 2 Relative Concentration of viscosity Water
content amino groups Ash content (RV) (ppm) (meq/kg) (%) Em 3 2.45
440 66.22 0.9 CEm 3 2.23 480 44 0
3. Property Analysis of Deodorizing Nylon 6 Fiber
[0049] The present experiment is for measuring the denier per
filament, the strength, the extensibility and a boiling water
shrinkage of the deodorizing nylon 6 fiber so as to analysis the
fiber properties of the deodorizing nylon 6 fiber of the present
disclosure.
[0050] In the physical property analysis, the denier per filament
is measured according to ASTM D1907-2010, the strength is measured
according to ASTM2256, the extensibility is measured according to
ASTM2256, and the boiling water shrinkage is measured according to
ASTM D2259-2002.
[0051] In detail, Example 4 (Em 4) and Comparative Example 4 (CEm
4) are used in the present experiment, wherein the deodorizing
nylon 6 fiber of the Example 4 is made by the preparation method of
the deodorizing nylon 6 fiber of the present disclosure, the nylon
6 fiber used in Comparative Example 4 is commercially available
product, wherein the deodorizing nylon 6 fiber of the Example 4
further includes a powder of titanium dioxide, and a weight ratio
of the powder of titanium dioxide is 0.9 based on the weight ratio
of the deodorizing nylon 6 chips as 100%, and the deodorizing nylon
6 fiber of the Example 4 is spun via the spinning apparatus 500 of
FIG. 3. During the spinning process, the extruder 530 is divided
into four regions, wherein a temperature T1 of the first region is
257.degree. C., a temperature T2 of the second region is
259.degree. C., a temperature T3 of the third region is 261.degree.
C., and a temperature T4 of the four region is 263.degree. C. In
the draw device 570, the rotational speed GR1 of the first godet
roller assembly 571 is 3550 m/min, the rotational speed GR2 of the
second godet roller assembly 572 is 4225 m/min, a temperature GRT2
of the second godet roller assembly is 145.degree. C. so as to heat
set the solidified fiber of the deodorizing nylon 6, and the
rotational speed GR3 of the third godet roller assembly 573 is 4215
m/min. Furthermore, the draw ratio is calculated by the output
speed and the input speed of the spinning process, wherein the
output speed is the rotational speed GR3 of the third godet roller
assembly 573, and the input speed is the rotational speed GR1 of
the first godet roller assembly 571, so that the draw ratio
(GR3/GR1) of the deodorizing nylon 6 fiber of the present
disclosure is about 1.19, whereby a 50/34SD semi-dull deodorizing
nylon 6 fiber is obtained.
[0052] The detailed data of the property analysis of the nylon 6
fiber of Example 4 and Comparative Example 4 are shown in Table 3,
wherein the temperatures T1 to T4 of the extruder used in the
Example 4 and Comparative Example 4 are the same, but the
rotational speeds GR1 to GR3 of Comparative Example 4 are different
from Example 4. As shown in Table 3, the denier per filament of the
deodorizing nylon 6 fiber of the Example 4 is 50.7, which is
similar to the denier per filament of 50.8 of the Comparative
Example 4. That is, the degree of fiber compaction of the
deodorizing nylon 6 fiber of the present disclosure is identical to
the conventional nylon 6 fiber. In the aspect of the strength, the
strength of the Example 4 is 3.96 g/d, and the strength of
Comparative Example 4 is 5.6 g/d. Furthermore, in the aspects of
the extensibility and the boiling water shrinkage, the
extensibility of Example 4 is 43.4%, the boiling water shrinkage of
Example 4 is 6.8%, the extensibility of Comparative Example 4 is
47.0%, and the boiling water shrinkage of the Comparative Example 4
is 8.0%. It shows that the deodorizing nylon 6 fiber made by the
preparation method of the deodorizing nylon 6 fiber of the present
disclosure can be further applied in other textile industrial
application after treating with high temperature and spinning.
TABLE-US-00003 TABLE 3 Em 4 CEm 4 50/34 SD 50/24 BR Fiber
Sepcification Semi-dull Full-dull GR1 (m/min) 3550 3600 GR2 (m/min)
4225 4560 GR3 (m/min) 4215 4550 GRT2 (.degree. C.) 145 140 Denier
per filament 50.7 50.8 Draw ratio (%) 1.19 1.26 Strength (g/d) 3.96
5.6 Extensibility (%) 43.4 47.0 Boiling water shrinkage (%) 6.8
8.0
4. Deodorizing Ability AnalysisTest of Deodorizing Nylon 6
Fiber
[0053] The present experiment is for measuring the removed rate of
the acetic acid and ammonia molecules so as to analysis the
deodorizing ability of the deodorizing nylon 6 fiber of the present
disclosure. The nylon 6 fibers of the aforementioned Example 4 and
Comparative Example 4 are used in the present experiment. In
detail, the nylon 6 fibers of the aforementioned Example 4 and
Comparative Example 4 are woven into a garter, respectively, so as
to process to the deodorizing ability analysis, wherein the removed
rate of the acetic acid is measured according to FTTS-FA-018, and
the removed rate of the ammonia molecules is also measured
according to FTTS-FA-018.
[0054] The detailed data of the deodorizing ability analysis of the
nylon 6 fiber of Example 4 and Comparative Example 4 are shown in
Table 4. As shown in Table 4, the removed rate of acetic acid of
Example 4 is 94% compared to 82% of the removed rate of acetic acid
of Comparative Example 4, and the removed rate of ammonia molecules
of Example 4 is 88% compared to 44.3% of the removed rate of acetic
acid of Comparative Example 4. It shows that the deodorizing
ability of the deodorizing nylon 6 fiber made by the preparation
method of a deodorizing nylon 6 fiber of the present disclosure is
excellent, and the deodorizing nylon 6 fiber of the present
disclosure can not only enhance the deodorizing ability and
deodorizing effects of the conventional nylon fiber, but also can
expand the application of the deodorizing nylon 6 fiber.
TABLE-US-00004 TABLE 4 Removed rate of Removed rate of acetic acid
(%) ammonia molecules (%) Em 4 94 88 CEm 4 82 44.3
[0055] According to the aforementioned embodiments, the present
disclosure has the advantages described bellowing. First, the
deodorizing ability of the nylon 6 fiber made by the preparation
method of the deodorizing nylon 6 fiber of the present disclosure
is achieved by adding the porous powder of citrate. Furthermore,
the porous powder of citrate is uniformly dispersed in the size
mixture of the deodorizing nylon 6 so as to maintain the
deodorizing ability thereof in the following spinning processes,
and the manufacturing efficiency of the deodorizing nylon 6 fiber
can be further enhanced. Second, acetic acid and ammonia molecules
can be removed effectively by the deodorizing nylon 6 fiber of the
present disclosure, that is, the deodorizing nylon 6 fiber of the
present disclosure has an excellent deodorizing ability.
Furthermore, the physical properties such as the strength and the
extensibility of the deodorizing nylon 6 fiber of the present
disclosure are good, thus the application potential of the
deodorizing nylon 6 fiber of the present disclosure is
excellent.
[0056] Although the present disclosure has been described in
considerable detail with reference to certain embodiments thereof,
other embodiments are possible. Therefore, the spirit and scope of
the appended claims should not be limited to the description of the
embodiments contained herein.
[0057] It will be apparent to those skilled in the art that various
modifications and variations can be made to the structure of the
present disclosure without departing from the scope or spirit of
the disclosure. In view of the foregoing, it is intended that the
present disclosure cover modifications and variations of this
disclosure provided they fall within the scope of the following
claims.
* * * * *