CN110983460A - Production method for preparing high-performance polyphenylene sulfide fiber through one-step drafting - Google Patents
Production method for preparing high-performance polyphenylene sulfide fiber through one-step drafting Download PDFInfo
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- CN110983460A CN110983460A CN201911363997.6A CN201911363997A CN110983460A CN 110983460 A CN110983460 A CN 110983460A CN 201911363997 A CN201911363997 A CN 201911363997A CN 110983460 A CN110983460 A CN 110983460A
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- polyphenylene sulfide
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
- D01D10/02—Heat treatment
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/12—Stretch-spinning methods
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- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Artificial Filaments (AREA)
Abstract
The invention belongs to the technical field of polyphenylene sulfide fiber production, and discloses a production method for preparing high-performance polyphenylene sulfide fiber by one-step drafting, which comprises the following steps: spinning: adding PPS resin into spinning equipment to perform melt spinning, and preparing polyphenylene sulfide protofilament, wherein the PPS resin comprises the following components: volatile matter is less than or equal to 0.3 percent, ash is less than or equal to 0.3 percent, and whiteness is more than or equal to 70 percent; one-step drafting: the drafting multiple is 2.5 to 4.5 times, and the drafting temperature is 70 to 95 ℃; heat setting: heating and shaping the drafted precursor to obtain shaped fibers; and the heat setting comprises tension heat setting and relaxation heat setting, wherein the heat setting temperature of the tension heat setting is 150-220 ℃; cutting and packaging: shearing the shaped fiber to obtain a polyphenylene sulfide fiber finished product with a target specification, and packaging the finished product fiber; in conclusion, the production method of the invention can obviously shorten the production flow and reduce the production consumption, and the prepared polyphenylene sulfide fiber has high strength and good fracture resistance.
Description
Technical Field
The invention belongs to the technical field of polyphenylene sulfide fiber production, and particularly relates to a production method for preparing high-performance polyphenylene sulfide fiber through one-step drafting.
Background
The polyphenylene sulfide fiber is a special fiber, has excellent chemical corrosion resistance, high temperature resistance, good flame retardance, insulativity and the like, and is widely used for filtering high-temperature smoke in thermal power plants, iron and steel plants, cement plants and the like.
The production of polyphenylene sulfide fibers generally adopts a melt spinning method, i.e., polyphenylene sulfide resin is subjected to melt spinning, and then is subjected to drafting, curling and cutting to obtain the polyphenylene sulfide fibers. At present, the polyphenylene sulfide fiber is mainly drafted by three or four drafting methods, such as: patent CN101187070A discloses a polyphenylene sulfide short fiber one-step method complete equipment and a production method, wherein the drafting adopts three or four drafting; patent CN101275303A discloses a stretching-tensioning-relaxing heat setting method of polyphenylene sulfide short fiber, which adopts three drafting processes to prepare polyphenylene sulfide short fiber; patent CN1603477A discloses a method for melt spinning, drawing and heat setting linear high molecular weight polyphenylene sulfide fiber, wherein three drawing steps are adopted for drawing.
The three-path or four-path drafting has the advantages of long flow path, low efficiency and high energy consumption, and the prepared polyphenylene sulfide short fiber has lower strength which is generally less than or equal to 4.0 cN/dtex.
Disclosure of Invention
In view of the above, the invention provides a production method for preparing high-performance polyphenylene sulfide fiber by one-step drafting with high efficiency and low consumption, so as to effectively shorten the production flow of polyphenylene sulfide fiber, reduce production consumption and improve product performance.
In order to achieve the purpose, the invention provides the following technical scheme: a production method for preparing high-performance polyphenylene sulfide fibers by one-step drafting comprises the following steps:
a) spinning: selecting polyphenylene sulfide (PPS) resin, adding the PPS resin into spinning equipment to perform melt spinning, and preparing polyphenylene sulfide protofilaments;
the melt index of the polyphenylene sulfide resin selected in the step is 50-250 g/min, and the polyphenylene sulfide resin comprises the following corresponding components: volatile matter is less than or equal to 0.3 percent, ash is less than or equal to 0.3 percent, and whiteness is more than or equal to 70 percent; the linear density of the finally prepared polyphenylene sulfide protofilament is 5.0-9.0 dtex, the breaking strength is 1.0 +/-0.3 cN/dtex, and the elongation at break is 300 +/-100%.
b) One-step drafting: a drafting machine is adopted to conduct one-step drafting on the protofilament prepared in the step a), the drafting multiple is 2.5-4.5 times, and the drafting temperature is 70-95 ℃;
c) heat setting: heating and shaping the drafted precursor to obtain shaped fibers;
in this step, the specific process is as follows: oiling, tense heat setting, oiling, curling and loose heat setting; wherein the tension heat setting adopts eighteen rollers and the tension heat setting temperature is 150-220 ℃; in addition, the speed ratio of the tension heat setting to the drawing machine is 0.8-1.5;
furthermore, after the step, the linear density of the obtained shaped fiber is 1.4-4.0 dtex, the breaking strength is more than or equal to 4.2cN/dtex, and the elongation at break is less than or equal to 40%.
d) Cutting and packaging: and shearing the shaped fiber to obtain a finished product of the polyphenylene sulfide fiber with the target specification, and packaging the finished product of the fiber.
Compared with the prior art, the invention has the following beneficial effects:
the production process of the polyphenylene sulfide fiber can obviously shorten the production flow and reduce the production consumption, and the prepared polyphenylene sulfide fiber has high strength and good fracture resistance.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to specific embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A production method for preparing high-performance polyphenylene sulfide fibers by one-step drafting comprises the following steps:
a) spinning: selecting polyphenylene sulfide (PPS) resin, adding the PPS resin into spinning equipment to perform melt spinning, and preparing polyphenylene sulfide protofilaments; wherein the polyphenylene sulfide resin selected: the melt index is 168g/min, the volatile matter is 0.12 percent, the ash is 0.10 percent and the whiteness is 82 percent; and the prepared polyphenylene sulfide protofilament: the linear density was 7.25dtex, the breaking strength was 0.91cN/dtex, and the elongation at break was 306%.
b) One-step drafting: and c), carrying out one-step drafting on the protofilament prepared in the step a) by adopting a drafting machine, wherein the drafting multiple is 3.28 times, and the drafting temperature is 85 ℃.
c) Shaping: heating and shaping the drafted precursor to obtain shaped fibers;
in this step, the specific process is as follows: oiling, tense heat setting, oiling, curling and loose heat setting; wherein the tension heat setting temperature is 192 ℃, and the speed ratio of the tension heat setting to the drawing machine is 1.07; in addition, the shaped fiber obtained in this step: the linear density is 2.16dtex, the breaking strength is 4.65cN/dtex, and the elongation at break is 26.2%.
d) Cutting and packaging: and shearing the shaped fiber to obtain a finished product of the polyphenylene sulfide fiber with the target specification, and packaging the finished product of the fiber.
Example 2
A production method for preparing high-performance polyphenylene sulfide fibers by one-step drafting comprises the following steps:
a) spinning: selecting polyphenylene sulfide (PPS) resin, adding the PPS resin into spinning equipment to perform melt spinning, and preparing polyphenylene sulfide protofilaments; wherein the polyphenylene sulfide resin selected: the melt index is 196g/min, the volatile matter is 0.15 percent, the ash is 0.12 percent and the whiteness is 85 percent; and the prepared polyphenylene sulfide protofilament: the linear density was 7.10dtex, the breaking strength was 0.85cN/dtex, and the elongation at break was 259%.
b) One-step drafting: and c), carrying out one-step drafting on the precursor prepared in the step a) by adopting a drafting machine, wherein the drafting multiple is 3.25 times, and the drafting temperature is 90 ℃.
c) Shaping: heating and shaping the drafted precursor to obtain shaped fibers;
in this step, the specific process is as follows: oiling, tense heat setting, oiling, curling and loose heat setting; wherein the tension heat setting temperature is 180 ℃, and the speed ratio of the tension heat setting to the drawing machine is 1.08; in addition, the shaped fiber obtained in this step: the linear density is 2.08dtex, the breaking strength is 4.37cN/dtex, and the elongation at break is 22.4%.
d) Cutting and packaging: and shearing the shaped fiber to obtain a finished product of the polyphenylene sulfide fiber with the target specification, and packaging the finished product of the fiber.
Example 3
A production method for preparing high-performance polyphenylene sulfide fibers by one-step drafting comprises the following steps:
a) spinning: selecting polyphenylene sulfide (PPS) resin, adding the PPS resin into spinning equipment to perform melt spinning, and preparing polyphenylene sulfide protofilaments; wherein the polyphenylene sulfide resin selected: the melt index is 148g/min, the volatile matter is 0.11 percent, the ash is 0.09 percent and the whiteness is 84 percent; and the prepared polyphenylene sulfide protofilament: the linear density is 5.85dtex, the breaking strength is 1.02cN/dtex, and the elongation at break is 330%.
b) One-step drafting: and c), carrying out one-step drafting on the protofilament prepared in the step a) by adopting a drafting machine, wherein the drafting multiple is 3.29 times, and the drafting temperature is 92 ℃.
c) Shaping: heating and shaping the drafted precursor to obtain shaped fibers;
in this step, the specific process is as follows: oiling, tense heat setting, oiling, curling and loose heat setting; wherein the tension heat setting temperature is 198 ℃, and the speed ratio of the tension heat setting to the drawing machine is 1.08; in addition, the shaped fiber obtained in this step: the linear density is 1.72dtex, the breaking strength is 5.12cN/dtex, and the elongation at break is 29.5%.
d) Cutting and packaging: and shearing the shaped fiber to obtain a finished product of the polyphenylene sulfide fiber with the target specification, and packaging the finished product of the fiber.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A production method for preparing high-performance polyphenylene sulfide fibers by one-step drafting is characterized by comprising the following steps:
a) spinning: adding PPS resin into spinning equipment to perform melt spinning, and preparing polyphenylene sulfide protofilament, wherein the PPS resin comprises the following components: volatile matter is less than or equal to 0.3 percent, ash is less than or equal to 0.3 percent, and whiteness is more than or equal to 70 percent;
b) one-step drafting: a drafting machine is adopted to conduct one-step drafting on the protofilament prepared in the step a), the drafting multiple is 2.5-4.5 times, and the drafting temperature is 70-95 ℃;
c) heat setting: heating and shaping the drafted precursor to obtain shaped fibers; and the heat setting comprises tension heat setting and relaxation heat setting, wherein the heat setting temperature of the tension heat setting is 150-220 ℃;
d) cutting and packaging: and shearing the shaped fiber to obtain a finished product of the polyphenylene sulfide fiber with the target specification, and packaging the finished product of the fiber.
2. The production method for preparing the high-performance polyphenylene sulfide fiber by one-step drafting according to claim 1, is characterized in that: the PPS resin has a melt index of 50-250 g/min.
3. The production method for preparing the high-performance polyphenylene sulfide fiber by one-step drafting according to claim 1, is characterized in that: the linear density of the polyphenylene sulfide protofilament prepared by the spinning in the step a) is 5.0-9.0 dtex, the breaking strength is 1.0 +/-0.3 cN/dtex, and the elongation at break is 300 +/-100%.
4. The production method for preparing the high-performance polyphenylene sulfide fiber by one-step drafting according to claim 1, is characterized in that: and the tension heat setting adopts eighteen-roller tension heat setting equipment.
5. The production method for preparing the high-performance polyphenylene sulfide fiber by one-step drafting according to claim 1 or 4, characterized in that: the speed ratio of the tension heat setting speed to the drawing speed is 0.8-1.5.
6. The production method for preparing the high-performance polyphenylene sulfide fiber by one-step drafting according to claim 1, is characterized in that: the linear density of the shaped fiber prepared by the step c) is 1.4-4.0 dtex, the breaking strength is more than or equal to 4.2cN/dtex, and the elongation at break is less than or equal to 40%.
7. The production method for preparing the high-performance polyphenylene sulfide fiber by one-step drafting according to claim 1, is characterized in that: in the step b), before performing tension heat setting and relaxation heat setting, the method comprises the step of oiling the drawn precursor.
8. The production method for preparing the high-performance polyphenylene sulfide fiber by one-step drafting according to claim 7, is characterized in that: the method also comprises the step of curling the drawn filaments before the relaxation heat setting is carried out, and the curling step is positioned after the oiling step.
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| CN201911363997.6A CN110983460A (en) | 2019-12-26 | 2019-12-26 | Production method for preparing high-performance polyphenylene sulfide fiber through one-step drafting |
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| CN201911363997.6A CN110983460A (en) | 2019-12-26 | 2019-12-26 | Production method for preparing high-performance polyphenylene sulfide fiber through one-step drafting |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1603477A (en) * | 2004-11-29 | 2005-04-06 | 四川省纺织工业研究所 | Melt spinning, set-stretching method for linear high molecular weight polyphenylene sulfide fiber |
| CN101187070A (en) * | 2007-11-19 | 2008-05-28 | 深圳市中晟纤维工程技术有限公司 | Polyphenylene sulfide short fibre one-step method complete equipment and production method |
| CN101275303A (en) * | 2008-04-24 | 2008-10-01 | 江苏瑞泰科技有限公司 | Stretch-tension-relax setting method for polyphenyl thioether short fibre |
| JP2008266869A (en) * | 2007-03-29 | 2008-11-06 | Toray Ind Inc | Polyphenylene sulfide short fiber and method for manufacturing the same |
| CN102560717A (en) * | 2011-12-19 | 2012-07-11 | 东华大学 | High-strength low-contract polyphenylene sulfide filament and preparation method thereof |
| CN104894678A (en) * | 2015-05-08 | 2015-09-09 | 江苏瑞泰科技有限公司 | Method for producing high-strength and high-modulus polyphenylene sulfide short fibers |
| WO2016052295A1 (en) * | 2014-09-30 | 2016-04-07 | 東レ株式会社 | Polyphenylene sulfide fiber |
| CN110295402A (en) * | 2019-06-11 | 2019-10-01 | 宜宾天原集团股份有限公司 | A kind of preparation method of polyphenylene sulfide fibre |
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2019
- 2019-12-26 CN CN201911363997.6A patent/CN110983460A/en active Pending
Patent Citations (8)
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|---|---|---|---|---|
| CN1603477A (en) * | 2004-11-29 | 2005-04-06 | 四川省纺织工业研究所 | Melt spinning, set-stretching method for linear high molecular weight polyphenylene sulfide fiber |
| JP2008266869A (en) * | 2007-03-29 | 2008-11-06 | Toray Ind Inc | Polyphenylene sulfide short fiber and method for manufacturing the same |
| CN101187070A (en) * | 2007-11-19 | 2008-05-28 | 深圳市中晟纤维工程技术有限公司 | Polyphenylene sulfide short fibre one-step method complete equipment and production method |
| CN101275303A (en) * | 2008-04-24 | 2008-10-01 | 江苏瑞泰科技有限公司 | Stretch-tension-relax setting method for polyphenyl thioether short fibre |
| CN102560717A (en) * | 2011-12-19 | 2012-07-11 | 东华大学 | High-strength low-contract polyphenylene sulfide filament and preparation method thereof |
| WO2016052295A1 (en) * | 2014-09-30 | 2016-04-07 | 東レ株式会社 | Polyphenylene sulfide fiber |
| CN104894678A (en) * | 2015-05-08 | 2015-09-09 | 江苏瑞泰科技有限公司 | Method for producing high-strength and high-modulus polyphenylene sulfide short fibers |
| CN110295402A (en) * | 2019-06-11 | 2019-10-01 | 宜宾天原集团股份有限公司 | A kind of preparation method of polyphenylene sulfide fibre |
Non-Patent Citations (1)
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| 姜振华等: "《耐高温耐腐蚀有机纤维》", 31 May 2017, 国防工业出版社 * |
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