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Anti-shrinkage polyphenylene sulfide fibre under ignition and preparation method thereof

A polyphenylene sulfide fiber and anti-shrinkage technology, applied in the field of fiber materials, can solve problems such as the influence of mechanical properties and the influence of intermolecular force of polyphenylene sulfide fibers.

Inactive Publication Date: 2019-08-30
SICHUAN UNFIRE POLYMER MATERIALS TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

CN108330680A discloses a preparation method of modified polyphenylene sulfide yarn, and CN105113209B discloses a preparation method of PPS fiber with self-extinguishing properties and no droplet, both of which oxidize polyphenylene sulfide fiber to change its melting Shrinkage performance, but the molecular force between the modified polyphenylene sulfide fibers is affected, and the mechanical properties are affected

Method used

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  • Anti-shrinkage polyphenylene sulfide fibre under ignition and preparation method thereof
  • Anti-shrinkage polyphenylene sulfide fibre under ignition and preparation method thereof
  • Anti-shrinkage polyphenylene sulfide fibre under ignition and preparation method thereof

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preparation example Construction

[0024] The embodiment of the present invention provides a method for preparing polyphenylene sulfide fibers that resist shrinkage under ignition and combustion, comprising the following steps:

[0025] (1) Add the polyphenylene sulfide fiber into the oxidizing agent solution and soak for 1-4h under the condition of 160-180°C, and then soak for 0.5h-1h under the condition of 180-200°C.

[0026] Linear polyphenylene sulfide (Polyp Henylene Sulfide, PPS) is a high polymer formed by overlapping and connecting para-phenylene and divalent sulfur atoms. It is the simplest molecular structure among sulfur-containing aromatics. things. Polyphenylene sulfide has a macromolecular linear rigid structure formed by linking the para-position of the benzene ring to the S atom. Because the rigid ring structure of the phenyl ring π bond and the S atom bond to form a chain structure, it has excellent performance. Therefore, the polyphenylene sulfide fiber has good performance, such as high temp...

Embodiment 1

[0049] A kind of preparation method of the polyphenylene sulfide fiber of anti-shrinkage under ignition combustion, comprises the following steps:

[0050] (1) Add polyphenylene sulfide fiber to K 2 o 2 Immerse in the solution at 180°C for 1 hour, then at 160°C for 0.5 hour, where K 2 o 2 K in solution 2 o 2 The mass concentration is 50%, polyphenylene sulfide fiber with K 2 o 2 The mass ratio of the solution is 1:4;

[0051] (2) Add the polyphenylene sulfide fiber impregnated in step 1 into the flavonoid solution and soak for 1 hour at 120°C, wherein the flavonoid mass concentration in the flavonoid solution is 40%, and the polyphenylene sulfide fiber and flavonoid The mass ratio of the quasi-solution is 1:2;

[0052] (3) washing the polyphenylene sulfide fiber impregnated in step 2 with acetone, and then washing with distilled water, and vacuum drying the cleaned polyphenylene sulfide fiber at a temperature of 140° C. for 2 hours;

[0053] (4) Add the dried polyphen...

Embodiment 2

[0057] A kind of preparation method of the polyphenylene sulfide fiber of anti-shrinkage under ignition combustion, comprises the following steps:

[0058] (1) Add polyphenylene sulfide fiber to H 2 SO 4 Immerse in the solution at 185°C for 1.5h, then at 165°C for 0.6h, where, H 2 SO 4 H in solution 2 SO 4 The mass concentration is 52%, polyphenylene sulfide fiber with H 2 SO 4 The mass ratio of the solution is 1:4.5;

[0059] (2) Add the polyphenylene sulfide fiber impregnated in step 1 into the flavonoid solution and soak for 1.2h at 125°C, wherein the mass concentration of flavonoids in the flavonoid solution is 42%, and the polyphenylene sulfide fiber and The mass ratio of the flavonoid solution is 1:2.2;

[0060] (3) Wash the polyphenylene sulfide fiber impregnated in step 2 with acetone, and then wash it with distilled water, and vacuum dry the cleaned polyphenylene sulfide fiber at a temperature of 145°C for 2.2 hours ;

[0061] (4) Add the dried polyphenylene...

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Abstract

The invention provides an anti-shrinkage polyphenylene sulfide fibre under ignition and a preparation method thereof, and belongs to the technical field of fiber materials. The preparation of the anti-shrinkage polyphenylene sulfide fibre under ignition comprises the following steps that 1, a polyphenylene sulfide fibre is added into an oxidizing agent solution for impregnation for 1-4 h under thetemperature of 180-200 DEG C, and then impregnation is performed for 0.5-1 h under the temperature of 160-180 DEG C; 2, the polyphenylene sulfide fibre is added into an anti-oxidant solution for impregnation for 1-2 h; 3, the polyphenylene sulfide fibre is subjected to washing and vacuum drying; 4, the dried polyphenylene sulfide fibre is added into a polyacrylamide solution, and impregnation isperformed for 3-5 h under the temperature of 150-180 DEG C; 5, the polyphenylene sulfide fibre is added into a 1,4-benzyl bichloride solution for cross linking for 3-5 h; 6, washing and vacuum dryingare performed on the cross linked polyphenylene sulfide fibre to obtain the anti-shrinkage polyphenylene sulfide fibre. The anti-shrinkage polyphenylene sulfide fibre has the good anti-shrinkage performance, the mechanical performance and the thermal stability, and no molten drop or shrinkage phenomenon happens during combustion.

Description

technical field [0001] The invention belongs to the technical field of fiber materials, and in particular relates to a shrinkage-resistant polyphenylene sulfide fiber under ignition and combustion and a preparation method thereof. Background technique [0002] Polyphenylene sulfide fiber (polyphenylene sulfide fiber) is a fiber made of polyphenylene sulfide resin. The polyphenylene sulfide resin is prepared by bulk polymerization, and the polyphenylene sulfide fiber is obtained after the spinning-grade polyphenylene sulfide resin is melt-spun, thermally stretched and shaped. [0003] Polyphenylene sulfide fiber has good heat resistance and is mainly used as a high-temperature filter fabric, which can withstand temperatures up to 190°C. However, the temperature of the exhaust gas discharged from the factory often reaches 190-220°C. In this high-temperature environment, the fiber creep causes the fabric to shrink, and causes the mechanical properties and life of the polypheny...

Claims

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Application Information

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IPC IPC(8): D06M13/08D06M15/285D06M11/50D06M11/55D06M11/64D06M11/30D06M13/152D06M101/30
CPCD06M11/30D06M11/50D06M11/55D06M11/64D06M13/08D06M13/152D06M15/285D06M2101/30D06M2200/45
Inventor 王冲刘举付登强杨华侨何凯廖明磊李亚儒
Owner SICHUAN UNFIRE POLYMER MATERIALS TECH
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