Polyacrylonitrile fiber with flame resistance and preparation method thereof

A technology of polyacrylonitrile fibers and polyacrylonitrile, which is applied in the manufacture of fire-resistant and flame-retardant filaments and the preparation of spinning solutions, and can solve the problems of increased shrinkage, heat resistance, light resistance, dimensional stability, and dyeability deterioration. Reduce fiber stickiness temperature and other problems, achieve excellent migration resistance, flame retardant durability, and good mechanical properties

Inactive Publication Date: 2014-01-01
SUZHOU LONGJIE SPECIAL FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide a flame-retardant polyacrylonitrile fiber and a preparation method thereof. The flame-retardant polyacrylonitrile fiber has good mechanical properties, flame-retardant properties and flame-retardant durability, and produces less smoke when burning, and can Solve the technical problems that the acrylonitrile fibers produced by the current copolymerization or blending methods have poor heat resistance, light resistance, dimensional stability and dyeability, lower fiber sticking temperature, increased shrinkage, and harmful gases released when burned

Method used

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  • Polyacrylonitrile fiber with flame resistance and preparation method thereof
  • Polyacrylonitrile fiber with flame resistance and preparation method thereof

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Embodiment 1

[0036] This embodiment provides a flame-retardant polyacrylonitrile fiber, which contains the following components:

[0037] An embodiment of the present invention provides a flame-retardant polyacrylonitrile fiber, the flame-retardant polyacrylonitrile fiber contains the following components:

[0038] High stereopolyacrylonitrile 38wt%

[0039] Industrial spinning grade polyacrylonitrile powder 54wt%

[0040] Ethyl vinyl phosphonate (phosphorous flame retardant) 8wt%;

[0041] The high-stereopolyacrylonitrile is synthesized in-situ into the industrial spinning grade polyacrylonitrile, and both the high-stereopolyacrylonitrile and ethyl vinyl phosphonate exist in the formed flame-retardant polyacrylonitrile in the form of grafting and blending. in acrylic fibers.

[0042] The preparation method of above-mentioned flame-retardant polyacrylonitrile fiber comprises the following steps:

[0043] All raw materials are in mass percentage, 35% of industrial spinning grade polyacr...

Embodiment 2

[0046]This embodiment provides a flame-retardant polyacrylonitrile fiber, which contains the following components:

[0047] An embodiment of the present invention provides a flame-retardant polyacrylonitrile fiber, the flame-retardant polyacrylonitrile fiber contains the following components:

[0048] Industrial spinning grade polyacrylonitrile powder 44wt%

[0049] High stereopolyacrylonitrile 48wt%

[0050] Allyl phosphate ethyl ester (phosphorous flame retardant) 8wt%;

[0051] The high stereopolyacrylonitrile is synthesized in-situ into the industrial spinning grade polyacrylonitrile, the high stereopolyacrylonitrile and

[0052] Allyl ethyl phosphate exists in the formed flame-retardant polyacrylonitrile fibers in the form of grafting and blending.

[0053] The preparation method of above-mentioned flame-retardant polyacrylonitrile fiber comprises the following steps:

[0054] All raw materials are in mass percentage, mix 25% industrial spinning grade polyacrylonitril...

Embodiment 3

[0056] An embodiment of the present invention provides a flame-retardant polyacrylonitrile fiber, the flame-retardant polyacrylonitrile fiber contains the following components:

[0057]

[0058] The high-stereopolyacrylonitrile is synthesized in-situ into the industrial spinning grade polyacrylonitrile, and both the high-stereopolyacrylonitrile and allyl phosphate ethyl ester exist in the formed flame-retardant polyacrylonitrile in the form of grafting and blending. in acrylic fibers.

[0059] The preparation method of above-mentioned flame-retardant polyacrylonitrile fiber comprises the following steps:

[0060] All raw materials are in mass percentage, 30% of industrial spinning grade polyacrylonitrile powder, 35% of acrylonitrile, 25% of urea (particle size is 35μm), 5% of vinylphosphonic acid and 5% of Methyl vinyl phosphonate was mixed evenly to form a mixture, which was added to the reaction bottle, and then frozen at -70°C for 100 hours, then liquid nitrogen was add...

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Abstract

The invention relates to a flame-resistant polyacrylonitrile fiber and a preparation method thereof. The flame-resistant polyacrylonitrile fiber contains highly-steric polyacrylonitrile, industrial spinning-stage polyacrylonitrile and a flame retardant.

Description

technical field [0001] The invention belongs to the field of chemical fiber material preparation, in particular to a flame-retardant polyacrylonitrile fiber and a preparation method thereof. Background technique [0002] Polyacrylonitrile fiber is one of the four major varieties of synthetic fibers. Its output is second only to polyester fiber and polyamide fiber in synthetic fibers. The world's output has reached 3 million tons per year. Polyacrylonitrile fiber is an excellent raw material for textile products. The fiber is light-resistant, radiation-resistant, soft and warm. It is known as "artificial wool" and is widely used in clothing fabrics, tarpaulins, curtains and other fields. But its biggest disadvantage is flammability, its limiting oxygen index is only 17-18%, which is the lowest among synthetic fibers, and its use is limited to a certain extent, so the flame-retardant modification of acrylic fiber is of great significance. [0003] There are generally two meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/54D01F1/07D01D1/02C08F20/44C08F30/02C08F2/46
Inventor 徐醒我关乐赵满才
Owner SUZHOU LONGJIE SPECIAL FIBER
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