CN111472061A - Production method of polyphenylene sulfide fine denier yarn - Google Patents
Production method of polyphenylene sulfide fine denier yarn Download PDFInfo
- Publication number
- CN111472061A CN111472061A CN202010249589.4A CN202010249589A CN111472061A CN 111472061 A CN111472061 A CN 111472061A CN 202010249589 A CN202010249589 A CN 202010249589A CN 111472061 A CN111472061 A CN 111472061A
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- CN
- China
- Prior art keywords
- polyphenylene sulfide
- fine denier
- filament
- producing fine
- denier filament
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
- D01F6/76—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from other polycondensation products
- D01F6/765—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from other polycondensation products from polyarylene sulfides
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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
- D01D1/00—Treatment of filament-forming or like material
- D01D1/10—Filtering or de-aerating the spinning solution or melt
- D01D1/106—Filtering
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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
- D01D4/00—Spinnerette packs; Cleaning thereof
-
- 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
- D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
- D01D5/092—Cooling filaments, threads or the like, leaving the spinnerettes in shafts or chimneys
-
- 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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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Artificial Filaments (AREA)
Abstract
The invention discloses a production method of polyphenylene sulfide fine denier yarn, which comprises the steps of pre-crystallizing and drying polyphenylene sulfide resin, melting by a screw, entering a filter and a box body, spraying by a spinning assembly to form melt trickle, cooling by circular air blowing to prepare polyphenylene sulfide raw yarn, and finally drafting, tension heat setting, curling, relaxation heat setting and cutting to prepare the polyphenylene sulfide fine denier yarn. The production method of the polyphenylene sulfide fine denier yarn is simple and easy to implement, and industrial production is realized.
Description
Technical Field
The invention relates to a production process of polyphenylene sulfide fine denier yarn.
Background
In recent years, with the rapid development of industry, the industrial pollution discharge is greatly increased, and the country puts forward higher requirements on energy conservation and emission reduction: GB13271-2001 'emission Standard of atmospheric pollutants for boilers' clearly proposes that the emission concentration of flue gas of coal-fired boilers of power plants is reduced from original 200mg/m3 to 50mg/m3, and partial regions even require that the emission concentration is less than 20mg/m 3. In the late 80 years and early 90 years, China mainly adopts an electrostatic dust collector which cannot meet the high standard, and the bag type dust collector is favored by the world with excellent filtering performance. Polyphenylene sulfide fibers are one of the raw materials of bag-type dust collectors, and play an extremely important role in environmental protection and filtration.
Theoretically, the PPS fiber has smaller linear density, thinner fiber diameter and larger specific surface area, and the filter material made of the superfine fiber has smaller aperture, so that the filter precision of the filter material can be greatly improved, and better filter precision can be obtained. Although the domestic PPS fiber has certain production capacity, the PPS fiber is mainly concentrated on conventional fibers such as 2.2dtex, and the PPS fine denier yarn with high specific surface area and high-precision filtering requirements also mainly depends on foreign import.
Patent CN 106757475a discloses a method for preparing polyphenylene sulfide superfine fiber by blending and spinning polyphenylene sulfide and polypropylene, which comprises blending and melt spinning polyphenylene sulfide and polypropylene, and then dissolving polypropylene in paraxylene to obtain polyphenylene sulfide superfine fiber. The process method has complex flow and high cost, also contains toxic and harmful substances, and is not easy to realize industrial production; patent CN104372442 discloses a polyphenylene sulfide sea-island fiber or superfine fiber and its preparation method, which comprises preparing sea-island fiber from polyphenylene sulfide and polyester, and removing the polyester fiber on the surface with solvent to obtain the polyphenylene sulfide superfine fiber. The method also has complex process flow and high production cost.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide a production method of polyphenylene sulfide fine denier yarn, which is safe and environment-friendly, does not change the prior production equipment, and does not increase the production cost.
The object of the present invention is achieved by the following means.
The method comprises the steps of pre-crystallizing polyphenylene sulfide resin with a melt index of 70-150 g/10min at 140-170 ℃, drying at 110-150 ℃, melting by a screw, entering a filter (with the mesh number of the filter being 150-300 meshes), spraying by a spinning assembly (comprising sea sand with the mesh number of 20-80 meshes, a filter screen with the mesh number of 20-300 meshes, a spinneret plate with the diameter of 160mm, the mesh number of 500-700 holes, the pore diameter of 0.2-0.3 mm and the length-diameter ratio of 1:3) to form melt trickle, cooling by circular blowing (with the air temperature of 20-30 ℃ and the air pressure of 600-1200 pa) to prepare polyphenylene sulfide protofilament with the linear density of 3.0-4.0 dtex, and finally preparing fine denier polyphenylene sulfide filament with the linear density of 1.0-1.4 dtex and the breaking strength of 4.2 cN/dtex.
Compared with the prior art, the production method of the fine denier yarn of polyphenylene sulfide is safe and environment-friendly, the process flow is simple, the cost is low, and the performance of the prepared fine denier yarn of polyphenylene sulfide is good.
The specific implementation mode is as follows:
the present invention will be described in further detail with reference to examples.
Example 1
Selecting a polyphenylene sulfide resin with a melt index of 135g/10min, an ash content of 0.10% and a volatile component of 0.12%, crystallizing at 155 ℃, drying at 135 ℃, melting by a screw, filtering by a 250-mesh filter, forming melt trickle by a spinning assembly (sea sand of 24 meshes, filter screens of 20/50/150 meshes and 20/50/200 meshes, a spinneret plate of 160mm in diameter, 594 holes, 0.23mm in hole diameter and 1:3 in length-diameter ratio), cooling by circular blowing at 24.0 ℃ and 850Pa to form protofilaments with a linear density of 3.97dtex, and preparing the fine denier filament of the polyphenylene sulfide (with the linear density of 1.30dtex and the breaking strength of 4.35cN/dtex) by 3.25-fold drafting, tension thermoforming (with a steam pressure of 18.0MPa), curling, relaxation thermoforming and cutting.
Example 2
Selecting a polyphenylene sulfide resin melt index of 128g/10min, ash content of 0.08% and volatile matter of 0.10%, crystallizing at 150 ℃, drying at 130 ℃, drying, melting the polyphenylene sulfide resin with water content of 28ppm by a screw, filtering by a 250-mesh filter, then forming melt trickle by a spinning component (sea sand: 24 meshes, filter screens: 20/50/150 meshes and 20/50/200 meshes, spinneret plate: 160mm in diameter, 594 holes, 0.23mm in hole diameter and 1:3 in length-diameter ratio), cooling by circular blowing at 26.0 ℃ and 820Pa to form protofilament with linear density of 3.30dtex, drafting by 3.18 times, tension heat setting (steam pressure of 18.5MPa), curling, relaxation heat setting and cutting to prepare the fine denier filament of the polyphenylene sulfide (linear density of 1.12dtex and breaking strength of 4.46 cN/dtex).
Example 3
Selecting 118g/10min polyphenylene sulfide resin melt, 0.08% ash and 0.10% volatile, crystallizing at 155 ℃, drying at 130 ℃, drying, melting the polyphenylene sulfide resin by a screw, filtering by a 250-mesh filter, then forming melt trickle by a spinning component (sea sand: 24 meshes, filter screens: 20/50/150 meshes and 20/50/200 meshes, spinneret plate: 160mm in diameter, 594 holes, 0.23mm in hole diameter and 1:3 in length-diameter ratio), cooling by circular blowing at 26.5 ℃ and 810Pa to form protofilament with linear density of 3.28dtex, drafting by 3.23 times, tension heat setting (steam pressure 19.0MPa), curling, relaxation heat setting and cutting to prepare the fine denier filament of the polyphenylene sulfide (linear density is 1.08dtex, breaking strength is 4.54 cN/dtex).
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 (9)
1. A process for preparing fine denier polyphenyl thioether filament includes such steps as pre-crystallizing and drying polyphenyl thioether resin, screw fusing, filter, box body, spinning to obtain fine fused mass flow, cooling by circular blowing to obtain raw polyphenyl thioether filament, drafting, thermally shaping, curling, thermally shaping, and cutting.
2. The method for producing fine denier filament of polyphenylene sulfide as claimed in claim 1, wherein: the filter core used by the filter has 150-300 meshes.
3. The method for producing fine denier filament of polyphenylene sulfide as claimed in claim 1, wherein: the spinning assembly comprises sea sand, a filter screen, a spinneret plate and the like.
4. The method for producing fine denier filament of polyphenylene sulfide as claimed in claim 3, wherein: the sea sand is 20-80 meshes; the filter screen is 20-300 meshes; the diameter of the spinneret plate is 160mm, the number of holes is 500-700, the aperture is 0.2-0.3 mm, and the length-diameter ratio is 1: 3.
5. The method for producing fine denier filament of polyphenylene sulfide as claimed in claim 1, wherein: the circular blowing temperature is 20-30 ℃, and the wind pressure is 600-1200 pa.
6. The method for producing fine denier filament of polyphenylene sulfide as claimed in claim 1, wherein: the density of the prepared polyphenylene sulfide original silk thread is 3.0-4.0 dtex.
7. The method for producing fine denier filament of polyphenylene sulfide as claimed in claim 1, wherein: the draft multiple is 2.0-4.0 times.
8. The method for producing fine denier filament of polyphenylene sulfide as claimed in claim 1, wherein: the pressure of the tense heat setting steam is 12.0-22.0 MPa.
9. The method for producing fine denier filament of polyphenylene sulfide as claimed in claim 1, wherein: the density of the prepared polyphenylene sulfide fine denier filament is 1.0-1.4 dtex, and the breaking strength is more than or equal to 4.2 cN/dtex.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010249589.4A CN111472061A (en) | 2020-04-01 | 2020-04-01 | Production method of polyphenylene sulfide fine denier yarn |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010249589.4A CN111472061A (en) | 2020-04-01 | 2020-04-01 | Production method of polyphenylene sulfide fine denier yarn |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111472061A true CN111472061A (en) | 2020-07-31 |
Family
ID=71749347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010249589.4A Pending CN111472061A (en) | 2020-04-01 | 2020-04-01 | Production method of polyphenylene sulfide fine denier yarn |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111472061A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009270230A (en) * | 2008-05-09 | 2009-11-19 | Toyobo Co Ltd | Polyphenylene sulfide fiber |
| CN103014889A (en) * | 2012-12-27 | 2013-04-03 | 四川安费尔高分子材料科技有限公司 | Equipment and process for producing high-performance polyphenylene sulfide fine-denier fiber |
| CN103409835A (en) * | 2013-08-05 | 2013-11-27 | 江苏瑞泰科技有限公司 | Fine denier polyphenylene sulfide short fiber production method |
-
2020
- 2020-04-01 CN CN202010249589.4A patent/CN111472061A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009270230A (en) * | 2008-05-09 | 2009-11-19 | Toyobo Co Ltd | Polyphenylene sulfide fiber |
| CN103014889A (en) * | 2012-12-27 | 2013-04-03 | 四川安费尔高分子材料科技有限公司 | Equipment and process for producing high-performance polyphenylene sulfide fine-denier fiber |
| CN103409835A (en) * | 2013-08-05 | 2013-11-27 | 江苏瑞泰科技有限公司 | Fine denier polyphenylene sulfide short fiber production method |
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Application publication date: 20200731 |