CN103242659A - Method for increasing viscosity of polyphenylene sulfide resin before spinning - Google Patents
Method for increasing viscosity of polyphenylene sulfide resin before spinning Download PDFInfo
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- CN103242659A CN103242659A CN2013102139495A CN201310213949A CN103242659A CN 103242659 A CN103242659 A CN 103242659A CN 2013102139495 A CN2013102139495 A CN 2013102139495A CN 201310213949 A CN201310213949 A CN 201310213949A CN 103242659 A CN103242659 A CN 103242659A
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- polyphenylene sulfide
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Abstract
The invention relates to the production field of polyphenylene sulfide, in particular to a method for increasing the viscosity of polyphenylene sulfide resin before spinning, which is characterized in that the mode of enabling polyphenylene sulfide resin to pass through a pre-crystallizer and a drying tower successively before the polyphenylene sulfide resin is used for spinning is adopted for increasing the viscosity of the polyphenylene sulfide resin, so that the spinning MFR (melt flow rate) value of the polyphenylene sulfide resin is reduced. The method has the advantages that the spinning MFR value of the polyphenylene sulfide resin can be effectively reduced to 70-85% of the original spinning MFR value, after the original polyphenylene sulfide resin with the MFR value in a range of 220-350g/10min is subjected to viscosity increasing by the method, the viscosity of the resin is effectively increased, so that the spinnability of the polyphenylene sulfide resin can be improved, sufficient spinning pressure can be established, the rate of finished products is improved, and the tensile strength of fiber products and the performance of the products are improved.
Description
Technical field
The present invention relates to the production field of polyphenylene sulfide, refer more particularly to the preceding polyphenylene sulfide method of viscosity that increases of a kind of spinning.
Background technology
Polyphenylene sulfide (being called for short PPS) has good thermostability, good anti-corrosion, has good insulativity and dielectricity etc. hot and humid the grade under the environment.The polyphenylene sulfide fibre of being made by polyphenylene sulfide is novel high added value speciality polymer material, have performances such as good thermotolerance, chemical resistance, flame retardant resistance, insulating property and dimensional stability, be widely used in fields such as environmental protection, electric power, machinery, space flight.
Plastic melt flow rate (MFR) refers to thermoplastic material under certain temperature and pressure, and the every 10min of melt is by the quality of standard mouth mould, and its unit is g/10min.At present, the spinning MFR of common fiber-grade polyphenyl thioether resin is generally higher.The spinning MFR value of fiber-grade polyphenyl thioether resin is more high, spinning properties is more poor, even can not set up enough spinning pressures and can't carry out spinning production, the head pressure that the spinning screw extrusion machine produces in spinning process is more little, the product row yielding is more little, the tensile strength of the polyphenylene sulfide fibre of Sheng Chaning is also more low therefrom, and product performance are more poor.
Therefore, in order to solve above technical problem, increase the polyphenylene sulfide method of viscosity before having designed a kind of spinning, this method allows polyphenylene sulfide successively by pre-crystallizer and drying tower before the polyphenylene sulfide spinning, increase the viscosity of polyphenylene sulfide with this method, thereby reduce the spinning MFR value of polyphenylene sulfide.This method can effectively reduce the spinning MFR value of polyphenylene sulfide, behind polyphenylene sulfide process present method tackify in feasible 220～350g/10min scope originally, can effectively improve the viscosity of resin, make the spinning MFR value of diphenyl sulfide resin be reduced to original 70～85%, so just can improve the polyphenylene sulfide spinning property, set up enough spinning pressures, improve the product row yielding, improve the tensile strength of fibre product and the performance of product.
Summary of the invention
In order to overcome the defective that exists in the background technology, the technical solution adopted for the present invention to solve the technical problems is: increase the polyphenylene sulfide method of viscosity before a kind of spinning, the steps include:
(1) at first polyphenylene sulfide is passed through ebullated bed formula pre-crystallizer, it was stopped 10～20 minutes in 120～180 ℃ gas drying medium;
(2) will send into the top of filling type drying tower through the polyphenylene sulfide that handled step (1) then, polyphenylene sulfide is slowly moved down in the filling type drying tower from top to bottom, polyphenylene sulfide mean residence time in the filling type drying tower is 20～40 hours, the gas drying medium enters from filling type drying tower bottom, form adverse current with polyphenylene sulfide, temperature when the gas drying medium enters the filling type drying tower is 200～260 ℃, and the intake velocity of gas drying medium is 1-8 cubic meter per minute;
(3) utilizing filling type drying tower bottom to take out step (2) at last handled polyphenylene sulfide and enters the chemical fibre spinning equipment and carry out spinning.
Increase the polyphenylene sulfide method of viscosity before a kind of spinning involved in the present invention, this method allows polyphenylene sulfide successively by pre-crystallizer and drying tower before the polyphenylene sulfide spinning, increase the viscosity of polyphenylene sulfide with this method, thereby reduce the spinning MFR value of polyphenylene sulfide.This method can effectively reduce the spinning MFR value of polyphenylene sulfide, behind polyphenylene sulfide process present method tackify in feasible 220～350g/10min scope originally, can effectively improve the viscosity of resin, make the spinning MFR value of diphenyl sulfide resin be reduced to original 70～85%, so just can improve the polyphenylene sulfide spinning property, set up enough spinning pressures, improve the product row yielding, improve the tensile strength of fibre product and the performance of product.
Embodiment
Increasing the polyphenylene sulfide method of viscosity below in conjunction with preferred embodiment before to a kind of spinning of the present invention is further described.
Embodiment one: increase the polyphenylene sulfide method of viscosity before a kind of spinning, the steps include:
(1) at first polyphenylene sulfide is passed through ebullated bed formula pre-crystallizer, it was stopped 10 minutes in 120 ℃ gas drying medium;
(2) will send into the top of filling type drying tower through the polyphenylene sulfide that handled step (1) then, polyphenylene sulfide is slowly moved down in the filling type drying tower from top to bottom, polyphenylene sulfide mean residence time in the filling type drying tower is 20 hours, the gas drying medium enters from filling type drying tower bottom, form adverse current with polyphenylene sulfide, temperature when the gas drying medium enters the filling type drying tower is 200 ℃, and the intake velocity of gas drying medium is 2 cubic metres of per minutes;
(3) utilizing filling type drying tower bottom to take out step (2) at last handled polyphenylene sulfide and enters the chemical fibre spinning equipment and carry out spinning.
Embodiment two: increase the polyphenylene sulfide method of viscosity before a kind of spinning, the steps include:
(1) at first polyphenylene sulfide is passed through ebullated bed formula pre-crystallizer, it was stopped 30 minutes in 150 ℃ gas drying medium;
(2) will send into the top of filling type drying tower through the polyphenylene sulfide that handled step (1) then, polyphenylene sulfide is slowly moved down in the filling type drying tower from top to bottom, polyphenylene sulfide mean residence time in the filling type drying tower is 30 hours, the gas drying medium enters from filling type drying tower bottom, form adverse current with polyphenylene sulfide, temperature when the gas drying medium enters the filling type drying tower is 230 ℃, and the intake velocity of gas drying medium is 5 cubic metres of per minutes;
(3) utilizing filling type drying tower bottom to take out step (2) at last handled polyphenylene sulfide and enters the chemical fibre spinning equipment and carry out spinning.
Embodiment three: increase the polyphenylene sulfide method of viscosity before a kind of spinning, the steps include:
(1) at first polyphenylene sulfide is passed through ebullated bed formula pre-crystallizer, it was stopped 20 minutes in 180 ℃ gas drying medium;
(2) will send into the top of filling type drying tower through the polyphenylene sulfide that handled step (1) then, polyphenylene sulfide is slowly moved down in the filling type drying tower from top to bottom, polyphenylene sulfide mean residence time in the filling type drying tower is 40 hours, the gas drying medium enters from filling type drying tower bottom, form adverse current with polyphenylene sulfide, temperature when the gas drying medium enters the filling type drying tower is 260 ℃, and the intake velocity of gas drying medium is 8 cubic metres of per minutes;
(3) utilizing filling type drying tower bottom to take out step (2) at last handled polyphenylene sulfide and enters the chemical fibre spinning equipment and carry out spinning.
Increase the polyphenylene sulfide method of viscosity before a kind of spinning involved in the present invention, this method allows polyphenylene sulfide successively by pre-crystallizer and drying tower before the polyphenylene sulfide spinning, increase the viscosity of polyphenylene sulfide with this method, thereby reduce the spinning MFR value of polyphenylene sulfide.This method can effectively reduce the spinning MFR value of polyphenylene sulfide, behind polyphenylene sulfide process present method tackify in feasible 220～350g/10min scope originally, can effectively improve the viscosity of resin, make the spinning MFR value of diphenyl sulfide resin be reduced to original 70～85%, so just can improve the polyphenylene sulfide spinning property, set up enough spinning pressures, improve the product row yielding, improve the tensile strength of fibre product and the performance of product.
Claims (1)
1. increase the polyphenylene sulfide method of viscosity before a spinning, it is characterized in that the steps include:
(1) at first polyphenylene sulfide is passed through ebullated bed formula pre-crystallizer, it was stopped 10～20 minutes in 120～180 ℃ gas drying medium;
(2) will send into the top of filling type drying tower through the polyphenylene sulfide that handled step (1) then, polyphenylene sulfide is slowly moved down in the filling type drying tower from top to bottom, polyphenylene sulfide mean residence time in the filling type drying tower is 20～40 hours, the gas drying medium enters from filling type drying tower bottom, form adverse current with polyphenylene sulfide, temperature when the gas drying medium enters the filling type drying tower is 200～260 ℃, and the intake velocity of gas drying medium is 1-8 cubic meter per minute;
(3) utilizing filling type drying tower bottom to take out step (2) at last handled polyphenylene sulfide and enters the chemical fibre spinning equipment and carry out spinning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102139495A CN103242659A (en) | 2013-05-31 | 2013-05-31 | Method for increasing viscosity of polyphenylene sulfide resin before spinning |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013102139495A CN103242659A (en) | 2013-05-31 | 2013-05-31 | Method for increasing viscosity of polyphenylene sulfide resin before spinning |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101280465A (en) * | 2008-04-23 | 2008-10-08 | 梅艳芳 | Production method of polyphenyl thioether filament |
| CN101613474A (en) * | 2009-07-24 | 2009-12-30 | 北京德厚朴化工技术有限公司 | Equipment for drying polyphenylene thioether |
| CN201427943Y (en) * | 2009-07-24 | 2010-03-24 | 北京德厚朴化工技术有限公司 | Polyphenylene sulfide drying device |
| CN101760903A (en) * | 2010-01-26 | 2010-06-30 | 佛山市斯乐普特种材料有限公司 | Method for preparing polyphenylene sulfide spun-bonded needle punched non-woven fabrics and device thereof |
| CN202181379U (en) * | 2011-07-11 | 2012-04-04 | 佛山市斯乐普特种材料有限公司 | Production equipment of polyphenylene sulfide filament yarns |
-
2013
- 2013-05-31 CN CN2013102139495A patent/CN103242659A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101280465A (en) * | 2008-04-23 | 2008-10-08 | 梅艳芳 | Production method of polyphenyl thioether filament |
| CN101613474A (en) * | 2009-07-24 | 2009-12-30 | 北京德厚朴化工技术有限公司 | Equipment for drying polyphenylene thioether |
| CN201427943Y (en) * | 2009-07-24 | 2010-03-24 | 北京德厚朴化工技术有限公司 | Polyphenylene sulfide drying device |
| CN101760903A (en) * | 2010-01-26 | 2010-06-30 | 佛山市斯乐普特种材料有限公司 | Method for preparing polyphenylene sulfide spun-bonded needle punched non-woven fabrics and device thereof |
| CN202181379U (en) * | 2011-07-11 | 2012-04-04 | 佛山市斯乐普特种材料有限公司 | Production equipment of polyphenylene sulfide filament yarns |
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Address after: 215531 Jiangsu province Changshou City branch Tang Zhen He Su she Nan side of State Road 204 Applicant after: SUZHOU GOLD SPRING NEW MATERIAL CO., LTD. Address before: 215531 Jiangsu province Changshou City branch Tang Zhen He Su she Nan side of State Road 204 Applicant before: Changshu Gold Spring Chemical Fibers and Knittings Co., Ltd. |
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Application publication date: 20130814 |