Preparation method of durable low-smoke halogen-free flame-retardant polyacrylonitrile fiber

A technology of polyacrylonitrile fiber and flame-retardant polyacrylonitrile, which is applied in the manufacture of fire-resistant and flame-retardant filaments, fiber chemical characteristics, single-component synthetic polymer rayon, etc., and can solve migration, polyacrylonitrile fiber moisture absorption, etc. To solve the problem, achieve the effects of small damage to mechanical properties, improve flame retardant performance, solve flame retardant durability and flame retardant migration

Inactive Publication Date: 2012-07-11
WUHAN TEXTILE UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] CN 1566421A discloses that after ammonium polyphosphate is treated with silane coupling agent or titanate coupling agent, it is added to the aqueous solution of NaSCN of polyacrylonitrile, and wet spinning is carried

Method used

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  • Preparation method of durable low-smoke halogen-free flame-retardant polyacrylonitrile fiber
  • Preparation method of durable low-smoke halogen-free flame-retardant polyacrylonitrile fiber

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Effect test

Embodiment 1

[0027] The preparation method of durable low-smoke halogen-free flame-retardant polyacrylonitrile fiber, it comprises the steps:

[0028] 1) Preparation of blended spinning stock solution: according to the mass fraction of industrial spinning grade polyacrylonitrile powder and phosphorus-containing flame retardant: 80 parts of industrial spinning grade polyacrylonitrile powder, 20 parts of phosphorus-containing flame retardant, Industrial spinning grade polyacrylonitrile powder and phosphorus-containing flame retardant are selected; the phosphorus-containing flame retardant is methyl vinyl phosphonate.

[0029] Described industrial spinning grade polyacrylonitrile powder (copolymer) is the general industrial spinning grade polyacrylonitrile powder that Shanghai Petrochemical Co., Ltd. produces, model PAN 60, and the composition of its powder copolymer is: acrylonitrile monomer 90wt%, vinyl acetate 8wt%, sodium methacrylsulfonate 2wt%.

[0030] According to the mass ratio of t...

Embodiment 2

[0038] The preparation method of durable low-smoke halogen-free flame-retardant polyacrylonitrile fiber, it comprises the steps:

[0039]1) Preparation of blended spinning stock solution: according to the mass fraction of industrial spinning grade polyacrylonitrile powder and phosphorus-containing flame retardant: 70 parts of industrial spinning grade polyacrylonitrile powder, 30 parts of phosphorus-containing flame retardant, Select industrial spinning grade polyacrylonitrile powder and phosphorus-containing flame retardant; the phosphorus-containing flame retardant is methyl vinyl phosphonate.

[0040] Described industrial spinning grade polyacrylonitrile powder (copolymer) is the general industrial spinning grade polyacrylonitrile powder that Shanghai Petrochemical Co., Ltd. produces, model PAN 60, and the composition of its powder copolymer is: acrylonitrile monomer 90wt%, vinyl acetate 8wt%, sodium methacrylsulfonate 2wt%.

[0041] According to the mass ratio of the tota...

Embodiment 3

[0047] The preparation method of durable low-smoke halogen-free flame-retardant polyacrylonitrile fiber, it comprises the steps:

[0048] 1) Preparation of blended spinning stock solution: according to the mass fraction of industrial spinning grade polyacrylonitrile powder and phosphorus-containing flame retardant: 75 parts of industrial spinning grade polyacrylonitrile powder, 25 parts of phosphorus-containing flame retardant, Select industrial spinning grade polyacrylonitrile powder and phosphorus-containing flame retardant; the phosphorus-containing flame retardant is allyl ethyl phosphate.

[0049] Described industrial spinning grade polyacrylonitrile powder (copolymer) is the general industrial spinning grade polyacrylonitrile powder that Shanghai Petrochemical Co., Ltd. produces, model PAN 60, and the composition of its powder copolymer is: acrylonitrile monomer 90wt%, vinyl acetate 8wt%, sodium methacrylsulfonate 2wt%.

[0050] According to the mass ratio of the polyac...

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Abstract

The invention relates to a preparation method of durable low-smoke halogen-free flame-retardant polyacrylonitrile fiber. The preparation method of durable low-smoke halogen-free flame-retardant polyacrylonitrile fiber is characterized by comprising the following steps: 1) blending spinning solution preparation: based on the mass parts of the polyacrylonitrile powder and the phosphorus-containing flame retardant, dissolving 65-80 parts of polyacrylonitrile powder and 20-35 parts of phosphorus-containing flame retardant into a 50-52wt% sodium thiocyanate aqueous solution, and mixing to obtain the blending spinning solution, wherein the ratio of the total mass of the polyacrylonitrile powder and the phosphorus-containing flame retardant to the mass of the 50-52wt% sodium thiocyanate aqueous solution is (10-15):100; 2) wet spinning; and 3) irradiation: irradiating primary flame-retardant polyacrylonitrile fiber in an electron beam accelerator with 0.5-5MeV or a <60>Co device to obtain thedurable low-smoke halogen-free flame-retardant polyacrylonitrile fiber, wherein the irradiation dose is 20-50kGy. The fiber prepared by using the method has good flame-retardant durability and small smoke generation property.

Description

technical field [0001] The invention belongs to the technical field of chemical fiber materials, in particular to a method for preparing durable low-smoke halogen-free flame-retardant polyacrylonitrile fibers. 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. Foreign flame-reta...

Claims

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Application Information

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IPC IPC(8): D01F11/06D01F6/54D01F1/07C08F220/44
Inventor 黄年华王晓广陈志军吴海燕周晓洁张翔于鹏飞
Owner WUHAN TEXTILE UNIV
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