CN106521683B - A kind of high-flexibility environmental protection staple fiber and preparation method thereof - Google Patents
A kind of high-flexibility environmental protection staple fiber and preparation method thereof Download PDFInfo
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- CN106521683B CN106521683B CN201510581817.7A CN201510581817A CN106521683B CN 106521683 B CN106521683 B CN 106521683B CN 201510581817 A CN201510581817 A CN 201510581817A CN 106521683 B CN106521683 B CN 106521683B
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Abstract
The invention discloses a kind of high-flexibility environmental protection staple fibers and preparation method thereof, are 35 ~ 48CN/dtex by the fiber modulus that the polyester synthesized by Titanium series catalyst is obtained through direct fabrics, the staple fiber that fiber number is 0.8dtex ~ 8.0dtex.The present invention is compared with common process, polyester staple fiber is produced using Titanium series catalyst, on the basis of keeping product original index constant, reduce spinning temperature, be conducive to improve the adhesion strength between polyester fondant and spinneret pore tube wall, avoid melt from generating sliding on wall, cause unstable melt flows, melt fracture is caused, spinning generates hard silk, lumps.Meanwhile for titanium system melt, adjustment is optimized to spinning speed and draft ratio, so that fiber modulus reduces, production run is normal, and finished fiber is soft and plentiful, and the flexibility of fiber is further increased.
Description
Technical field
The present invention relates to synthetic fibers production technical fields, and in particular to a kind of polyester fiber and preparation method thereof.
Background technique
With the continuous improvement of people's living standards, and the concern to environment, environmentally friendly staple fiber be more and more favored.
In traditional fiber production process, need to add the catalyst containing heavy metal antimony, the use of the catalyst when producing polyester
It is easy to pollute the environment.Currently, existing related patents disclose the method with Titanium series catalyst production polyester, and such as: it awards
Weighing Chinese patent " for producing the catalyst of polyester ", Authorization Notice No. that notification number is CN100567364C is
The China that Chinese patent " Titanium series catalyst for polyester ", the Authorization Notice No. of CN100586982C is CN101942078B is specially
Sharp " titanium series polyester catalyst for the being used to prepare polyester ", Chinese patent " titanium polyester that Authorization Notice No. is CN101121777B
The Chinese patent " Titanium series catalyst " etc. that catalyst " and Authorization Notice No. are CN101148499B discloses this kind of new catalytic
Agent, and Chinese patent that Authorization Notice No. is CN102219890B " method of production titanium polyester ", Authorization Notice No. are
China's application " titanium that Chinese patent " method of production polyester ", the application publication number of CN101942076B is CN103539926A
Be the production method of polyester ", application publication number be CN103772684A China application " titanium catalysis polyester production method "
And application publication number is that China's application " polymerization of polyester resin " of CN103772671A etc. then further discloses use
The concrete technology method of catalyst progress production of polyester.But the polyester application how will be polymerize by Titanium series catalyst
Method and step and technological parameter in spinning fibre field, and during the spinning process and obtaining have how the fiber of property,
It is not all developed accordingly, yet there are no correlative study.
Summary of the invention
Goal of the invention: in view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to provide a kind of high-flexibility environmental protection short fibre
Dimension and preparation method thereof, short fine fiber modulus obtained is low, soft, flexibility is strong, and spinning plate surface during the spinning process
It is clean.
Technical solution: a kind of high-flexibility environmental protection staple fiber passes through direct spinning by the polyester that Titanium series catalyst synthesizes
The staple fiber that the fiber modulus of acquisition is 35~48CN/dtex, fiber number is 0.8dtex~8.0dtex.
The preparation method of above-mentioned high-flexibility environmental protection staple fiber synthesizes polyester with Titanium series catalyst, by polyester fondant with 3~
The pressure of 8MPa enters the melt pipe of device for spinning, and melt enters spinning manifold spinning, spinning temperature by pressurization, filtering
274~284 DEG C, 1020~1400m/min of spinning speed, using ring blowing cooling, cooling 0.8~1.5m/s of wind speed is made nascent
Fiber；As-spun fibre is in 50~80 DEG C of progress level-one drawing-offs of temperature, and 3.00~3.96 times of drafting multiple, at 120~190 DEG C of temperature
Carry out second level drawing-off, 1.04~1.98 times of drafting multiple, 150~190 DEG C at a temperature of carry out nervous 5~60s of thermal finalization after
It is crimped, cuts off, being packaged the staple fiber for being made that fiber modulus is 35~48CN/dtex, fiber number is 0.8dtex~8.0dtex.
Preferably, melt is pressurized 10~20MPa, and whole flow process melt pipe can be made to establish suitable pressure, be conducive to
Melt equably flowing mixing in the duct, so that melt keeps uniformly, helping to stablize subsequent spinning process.
Preferably, spinning pressure is 3~8Mpa, and melt can be made to keep the pressure of homogeneous constant before entering spinneret,
Be conducive to melt Uniform Flow in spinning pack, no dead angle generates, and spinning process wire vent is smooth, ensure that entire spinning Cheng Wending
Without fluctuation.
The utility model has the advantages that the present invention produces polyester staple fiber compared with common process, using Titanium series catalyst, product is being kept
On the basis of former index is constant, spinning temperature is reduced, is conducive to improve between polyester fondant and spinneret pore tube wall
Adhesion strength avoids melt from generating sliding on wall, causes unstable melt flows, causes melt fracture, and spinning generates hard silk, slurry
Block.Meanwhile for titanium system melt, adjustment is optimized to spinning speed and draft ratio, so that fiber modulus reduces, production
Normal operation, finished fiber is soft and plentiful, and the flexibility of fiber is further increased.
Specific embodiment
Technical solution of the present invention is described in detail below, but protection scope of the present invention is not limited to the implementation
Example.
Embodiment: including five groups of comparative tests, every group of test is to produce the staple fiber similar to fiber number as target, including by this
Invention the method prepares the embodiment of short fibre, synthesizes polyester with Titanium series catalyst but prepares pair of short fibre by conventional spinning processes
Ratio and the comparative example that short fibre is prepared with antimony-based catalyst synthesis polyester.
First group: the staple fiber that preparation fiber number is 1.6dtex:
Embodiment 1: the polyester fondant synthesized with Titanium series catalyst is passed through into polyester, spinning interface point, with the pressure of 6MPa
Into device for spinning melt pipe, melt enters spinning manifold 8MPa spinning, spinning temperature by the pressurization and filtering of 15MPa
284 DEG C, spinning speed 1122m/min, ring blowing cooling wind speed 1.0m/s obtains as-spun fibre；As-spun fibre carries out one at 60 DEG C
Grade drawing-off, 3.32 times of drafting multiple, 170 DEG C of progress second level drawing-offs, 1.25 times of drafting multiple, 160 DEG C of nervous thermal finalization 30s are laggard
Row curling, is packaged cutting, and the environmentally friendly polyester staple fiber of 1.6dtex is made.
Comparative example 1-1: the polyester fondant synthesized with Titanium series catalyst is passed through into polyester, spinning interface point, with the pressure of 6MPa
Power enters device for spinning melt pipe, and melt enters spinning manifold 8MPa spinning, spinning temperature by the pressurization and filtering of 15MPa
288 DEG C, spinning speed 1100m/min, ring blowing cooling wind speed 1.0m/s obtains as-spun fibre；As-spun fibre carries out one at 60 DEG C
Grade drawing-off, 3.35 times of drafting multiple, 170 DEG C of progress second level drawing-offs, 1.26 times of drafting multiple, 160 DEG C of nervous thermal finalization 30s are laggard
Row curling, is packaged cutting, and the environmentally friendly polyester staple fiber of 1.6dtex is made.
Comparative example 1-2: the polyester fondant synthesized with antimony-based catalyst is passed through into polyester, spinning interface point, with the pressure of 6MPa
Power enters device for spinning melt pipe, and melt enters spinning manifold 8MPa spinning, spinning temperature by the pressurization and filtering of 15MPa
288 DEG C, spinning speed 1100m/min, cooling wind speed 1.0m/s obtains as-spun fibre；As-spun fibre is led in 60 DEG C of progress level-ones
It stretches, 3.35 times of drafting multiple, 170 DEG C of progress second level drawing-offs, 1.26 times of drafting multiple, is rolled up after 160 DEG C of nervous thermal finalization 30s
Bent, cutting is packaged, and the environmentally friendly polyester staple fiber of 1.6dtex is made.
Second group: the staple fiber that preparation fiber number is 0.8dtex:
Embodiment 2: the polyester fondant synthesized with Titanium series catalyst is passed through into polyester, spinning interface point, with the pressure of 5MPa
Into device for spinning melt pipe, melt enters spinning manifold 6MPa spinning, spinning temperature by the pressurization and filtering of 18MPa
290 DEG C, spinning speed 1400m/min, circular blow but wind speed 0.8m/s obtains as-spun fibre；As-spun fibre is in 50 DEG C of progress level-ones
Drawing-off, 3.00 times of drafting multiple, 120 DEG C of progress second level drawing-offs, carry out after 170 DEG C of nervous thermal finalization 20s by 1.56 times of drafting multiple
Curling, is packaged cutting, and the environmentally friendly polyester staple fiber of 0.8dtex is made.
Comparative example 2-1: the polyester fondant synthesized with Titanium series catalyst is passed through into polyester, spinning interface point, with the pressure of 5MPa
Power enters device for spinning melt pipe, and melt enters spinning manifold 6MPa spinning, spinning temperature by the pressurization and filtering of 18MPa
295 DEG C, spinning speed 1370m/min, ring blowing cooling wind speed 0.8m/s obtains as-spun fibre；As-spun fibre carries out one at 50 DEG C
Grade drawing-off, 3.05 times of drafting multiple, 120 DEG C of progress second level drawing-offs, 1.58 times of drafting multiple, 170 DEG C of nervous thermal finalization 20s are laggard
Row curling, is packaged cutting, and the environmentally friendly polyester staple fiber of 0.8dtex is made.
Comparative example 2-2: the polyester fondant synthesized with antimony-based catalyst is passed through into polyester, spinning interface point, with the pressure of 5MPa
Power enters device for spinning melt pipe, and melt enters spinning manifold 6MPa spinning, spinning temperature by the pressurization and filtering of 18MPa
295 DEG C, spinning speed 1370m/min, cooling wind speed 0.8m/s obtains as-spun fibre；As-spun fibre is led in 50 DEG C of progress level-ones
It stretches, 3.05 times of drafting multiple, 120 DEG C of progress second level drawing-offs, 1.58 times of drafting multiple, is rolled up after 170 DEG C of nervous thermal finalization 20s
Bent, cutting is packaged, and the environmentally friendly polyester staple fiber of 0.8dtex is made.
Third group: the staple fiber that preparation fiber number is 2.8dtex:
Embodiment 3: the polyester fondant synthesized with Titanium series catalyst is passed through into polyester, spinning interface point, with the pressure of 3MPa
Into device for spinning melt pipe, melt enters spinning manifold 3MPa spinning, spinning temperature by the pressurization and filtering of 20MPa
280 DEG C, spinning speed 1020m/min, ring blowing cooling wind speed 1.2m/s obtains as-spun fibre；As-spun fibre carries out one at 70 DEG C
Grade drawing-off, 3.96 times of drafting multiple, 190 DEG C of progress second level drawing-offs, 1.98 times of drafting multiple, 180 DEG C of nervous thermal finalization 15s are laggard
Row curling, is packaged cutting, and the environmentally friendly polyester staple fiber of 2.8dtex is made.
Comparative example 3-1: the polyester fondant synthesized with Titanium series catalyst is passed through into polyester, spinning interface point, with the pressure of 3MPa
Power enters device for spinning melt pipe, and melt enters spinning manifold 3MPa spinning, spinning temperature by the pressurization and filtering of 20MPa
283 DEG C, spinning speed 1000m/min, ring blowing cooling wind speed 1.2m/s obtains as-spun fibre；As-spun fibre carries out one at 70 DEG C
Grade drawing-off, 4.00 times of drafting multiple, 190 DEG C of progress second level drawing-offs, 2.00 times of drafting multiple, 180 DEG C of nervous thermal finalization 15s are laggard
Row curling, is packaged cutting, and the environmentally friendly polyester staple fiber of 2.8dtex is made.
Comparative example 3-2: the polyester fondant synthesized with antimony-based catalyst is passed through into polyester, spinning interface point, with the pressure of 3MPa
Power enters device for spinning melt pipe, and melt enters spinning manifold 3MPa spinning, spinning temperature by the pressurization and filtering of 20MPa
280 DEG C, spinning speed 1020m/min, cooling wind speed 1.2m/s obtains as-spun fibre；As-spun fibre is led in 70 DEG C of progress level-ones
It stretches, 3.96 times of drafting multiple, 190 DEG C of progress second level drawing-offs, 1.98 times of drafting multiple, is rolled up after 180 DEG C of nervous thermal finalization 15s
Bent, cutting is packaged, and the environmentally friendly polyester staple fiber of 2.8dtex is made.
4th group: the staple fiber that preparation fiber number is 4.5dtex:
Embodiment 4: the polyester fondant synthesized with Titanium series catalyst is passed through into polyester, spinning interface point, with the pressure of 8MPa
Into device for spinning melt pipe, melt enters spinning manifold 5MPa spinning, spinning temperature by the pressurization and filtering of 10MPa
289 DEG C, spinning speed 1262m/min, ring blowing cooling wind speed 1.3m/s obtains as-spun fibre；As-spun fibre carries out one at 80 DEG C
Grade drawing-off, 3.41 times of drafting multiple, 180 DEG C of progress second level drawing-offs, 1.04 times of drafting multiple, 150 DEG C of nervous thermal finalization 60s are laggard
Row curling, is packaged cutting, and the environmentally friendly polyester staple fiber of 4.5dtex is made.
Comparative example 4-1: the polyester fondant synthesized with Titanium series catalyst is passed through into polyester, spinning interface point, with the pressure of 8MPa
Power enters device for spinning melt pipe, and melt enters spinning manifold 5MPa spinning, spinning temperature by the pressurization and filtering of 10MPa
292 DEG C, spinning speed 1250m/min, ring blowing cooling wind speed 1.3m/s obtains as-spun fibre；As-spun fibre carries out one at 80 DEG C
Grade drawing-off, 3.58 times of drafting multiple, 180 DEG C of progress second level drawing-offs, 1.00 times of drafting multiple, 150 DEG C of nervous thermal finalization 60s are laggard
Row curling, is packaged cutting, and the environmentally friendly polyester staple fiber of 4.5dtex is made.
Comparative example 4-2: the polyester fondant synthesized with antimony-based catalyst is passed through into polyester, spinning interface point, with the pressure of 8MPa
Power enters device for spinning melt pipe, and melt enters spinning manifold 5MPa spinning, spinning temperature by the pressurization and filtering of 10MPa
289 DEG C, spinning speed 1262m/min, cooling wind speed 1.3m/s obtains as-spun fibre；As-spun fibre is led in 80 DEG C of progress level-ones
It stretches, 3.41 times of drafting multiple, 180 DEG C of progress second level drawing-offs, 1.04 times of drafting multiple, is rolled up after 150 DEG C of nervous thermal finalization 60s
Bent, cutting is packaged, and the environmentally friendly polyester staple fiber of 4.5dtex is made.
5th group: the staple fiber that preparation fiber number is 7.8~8.0dtex:
Embodiment 5: the polyester fondant synthesized with Titanium series catalyst is passed through into polyester, spinning interface point, with the pressure of 6MPa
Into device for spinning melt pipe, melt enters spinning manifold 3MPa spinning, spinning temperature by the pressurization and filtering of 18MPa
274 DEG C, spinning speed 1365m/min, ring blowing cooling wind speed 1.5m/s obtains as-spun fibre；As-spun fibre carries out one at 60 DEG C
Grade drawing-off, 3.23 times of drafting multiple, 150 DEG C of progress second level drawing-offs, 1.41 times of drafting multiple, 190 DEG C of nervous thermal finalization 5s are laggard
Row curling, is packaged cutting, and the environmentally friendly polyester staple fiber of 8.0dtex is made.
Comparative example 5-1: the polyester fondant synthesized with Titanium series catalyst is passed through into polyester, spinning interface point, with the pressure of 6MPa
Power enters device for spinning melt pipe, and melt enters spinning manifold 3MPa spinning, spinning temperature by the pressurization and filtering of 18MPa
278 DEG C, spinning speed 1345m/min, ring blowing cooling wind speed 1.5m/s obtains as-spun fibre；As-spun fibre carries out one at 60 DEG C
Grade drawing-off, 3.26 times of drafting multiple, 150 DEG C of progress second level drawing-offs, 1.42 times of drafting multiple, 180 DEG C of nervous thermal finalization 5s are laggard
Row curling, is packaged cutting, and the environmentally friendly polyester staple fiber of 7.8dtex is made.
Comparative example 5-2: the polyester fondant synthesized with antimony-based catalyst is passed through into polyester, spinning interface point, with the pressure of 6MPa
Power enters device for spinning melt pipe, and melt enters spinning manifold 3MPa spinning, spinning temperature by the pressurization and filtering of 18MPa
275 DEG C, spinning speed 1365m/min, cooling wind speed 1.5m/s obtains as-spun fibre；As-spun fibre is led in 60 DEG C of progress level-ones
It stretches, 3.23 times of drafting multiple, 150 DEG C of progress second level drawing-offs, 1.41 times of drafting multiple, is rolled up after 190 DEG C of nervous thermal finalization 5s
Bent, cutting is packaged, and the environmentally friendly polyester staple fiber of 8.0dtex is made.
Above-mentioned five groups of tests are compared and analyzed, the results are shown in Table 1:
1 embodiment of table and comparative example data result table
As can be seen from the above table, produce similar product, using when Titanium series catalyst melt compared with conventional spinning processes, by spinning
Temperature reduces, and improves the adhesion strength between polyester fondant and spinneret pore tube wall, avoids melt and generate cunning on wall
The case where moving, causing unstable melt flows, melt fracture, spinning is caused to generate hard silk, lumps, repairs plate to be conducive to increase
Period extends spinneret and uses the time, can will repair plate cycle stretch-out 16-24 hours.On the other hand, to spinning speed and drawing-off
Adjustment is optimized in multiplying power, improves spinning speed, reduces draft ratio, and manufactured product fiber modulus reduces, production fortune
Row is normal, and finished fiber is soft, and the flexibility of fiber is further increased, and is conducive to the production of rear road user ---
Applied to spunlace non-woven cloth, the fiber of low modulus can make non-woven cloth feel more soft；Applied to fabric yarn, can make
It is more soft and plentiful to obtain equally tissue, the feel of specification fabric.
In addition, production similar product, relative to using former antimony-based catalyst, after technique adjustment, the modulus of finished fiber is substantially
Degree reduces, and improves the flexibility of fiber, is conducive to the production of rear road user --- it is applied to spunlace non-woven cloth, the fibre of low modulus
Dimension can make non-woven cloth feel more soft；Applied to fabric yarn, can equally to organize, the feel of specification fabric more
Add soft and plentiful.Meanwhile relative to former antimony-based catalyst is used, irregular plate, spinning plate surface can reduce after adjusting process
Completely, it extends spinneret and uses the time.It in addition is 0 by heavy metal antimony content in SGS detection fiber, safety and environmental protection is widened
The application field of fiber, further satisfaction user demand, improves product competitiveness.
Claims (3)
1. a kind of preparation method of high-flexibility environmental protection staple fiber, it is characterised in that: polyester is synthesized with Titanium series catalyst, by polyester
Melt enters the melt pipe of device for spinning with the pressure of 3 ~ 8MPa, and melt enters spinning manifold spinning by pressurization, filtering, spins
274 ~ 284 DEG C of temperature, 1020 ~ 1400m/min of spinning speed of silk, using ring blowing cooling, cooling 0.8 ~ 1.5 m/s of wind speed is made
As-spun fibre；As-spun fibre is in 50 ~ 80 DEG C of progress level-one drawing-offs of temperature, and 3.32 ~ 3.96 times of drafting multiple, in temperature 120 ~ 190
DEG C carry out second level drawing-off, 1.25 ~ 1.98 times of drafting multiple, 150 ~ 190 DEG C at a temperature of to carry out nervous 5 ~ 60s of thermal finalization laggard
Row curling, is packaged the staple fiber for being made that fiber modulus is 35 ~ 48CN/dtex, fiber number is 0.8dtex ~ 8.0dtex at cutting.
2. the preparation method of high-flexibility environmental protection staple fiber according to claim 1, it is characterised in that: melt pressurization 10 ~
20MPa。
3. the preparation method of high-flexibility environmental protection staple fiber according to claim 1, it is characterised in that: spinning pressure be 3 ~
8MPa。
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102586940A (en) * | 2012-03-15 | 2012-07-18 | 泉州海天材料科技股份有限公司 | Biomass polyester short fiber and preparation method thereof |
| CN103774267A (en) * | 2014-01-26 | 2014-05-07 | 东华大学 | Preparation method of flexible polyhydroxyl polyester fibers |
| CN103789865A (en) * | 2014-01-26 | 2014-05-14 | 东华大学 | Preparation method of easily dyed polyester fiber with high hydrophilicity |
| CN104451936A (en) * | 2014-11-24 | 2015-03-25 | 中国纺织科学研究院 | Light-masking hydrophilic fiber and preparation method thereof |
-
2015
- 2015-09-14 CN CN201510581817.7A patent/CN106521683B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102586940A (en) * | 2012-03-15 | 2012-07-18 | 泉州海天材料科技股份有限公司 | Biomass polyester short fiber and preparation method thereof |
| CN103774267A (en) * | 2014-01-26 | 2014-05-07 | 东华大学 | Preparation method of flexible polyhydroxyl polyester fibers |
| CN103789865A (en) * | 2014-01-26 | 2014-05-14 | 东华大学 | Preparation method of easily dyed polyester fiber with high hydrophilicity |
| CN104451936A (en) * | 2014-11-24 | 2015-03-25 | 中国纺织科学研究院 | Light-masking hydrophilic fiber and preparation method thereof |
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