A carbon fiber production process capable of eliminating static electricity

A production process and technology for eliminating static electricity, which is applied in the direction of fiber chemical characteristics, textiles and papermaking, etc., can solve the problems of unfavorable raw silk unorientation, unfavorable guarantee of carbon fiber quality, and inability to guarantee the strength of raw silk, so as to ensure quality and eliminate The effect of static electricity

Active Publication Date: 2021-05-04
CHANGZHOU HONGFA ZONGHENG ADVANCED MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The object of the present invention is to provide a carbon fiber production process capable of eliminating static electricity, so as to solve the current carbon fiber production process proposed by the above-mentioned background technology. The de-orientation of the filaments cannot guarantee the strength of the original filaments after oxidative carbonization, which is not conducive to ensuring the quality of carbon fibers

Method used

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  • A carbon fiber production process capable of eliminating static electricity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] With 96%wt acrylonitrile, 1%wt itaconic acid, 3%wt styrene sulfonic acid as comonomer, carry out solution polymerization reaction under the effect of solvent and initiator, obtain copolymer; The polymer obtained by polymerization reaction Carry out wet spinning to obtain the original silk; dissolve benzyltriethylammonium chloride in water, configure a solution with a mass concentration of 1%wt, soak the original silk in the benzyltriethylammonium chloride aqueous solution for 2min, Remove to dry.

[0029] The raw silk is dried in a horizontal drying furnace, the drying temperature is 80°C, and the drying time is 30 minutes. After drying, the raw silk with a water content of ≤1% is obtained; the dried raw silk and the raw silk are sent to a pre-oxidation furnace for pre-oxidation. Oxidation, there are 3 pre-oxidation furnaces in a row, the temperature ranges of the 3 pre-oxidation furnaces are 180-230°C, 220-260°C, 255-265°C respectively, and the pre-oxidation time is 15...

Embodiment 2

[0032] With 97%wt acrylonitrile, 2%wt itaconic acid, 1%wt styrene sulfonic acid as comonomer, carry out solution polymerization reaction under the effect of solvent and initiator, obtain copolymer; The polymer obtained by polymerization reaction Carry out wet spinning to obtain raw silk; dissolve tetrabutylammonium hydrogen sulfate in water to prepare a solution with a mass concentration of 0.5% wt, soak the raw silk in tetrabutylammonium hydrogen sulfate aqueous solution for 1 min, take it out and dry it in the air.

[0033] The raw silk is dried in a horizontal drying furnace, the drying temperature is 100°C, and the drying time is 25 minutes. After drying, the raw silk with a water content of ≤ 1% is obtained; the dried raw silk and the raw silk are sent to a pre-oxidation furnace for pre-oxidation. Oxidation, there are 3 pre-oxidation furnaces in a row, the temperature ranges of the 3 pre-oxidation furnaces are 180-230°C, 220-260°C, 255-265°C respectively, and the pre-oxida...

Embodiment 3

[0036] Except that the comonomer is composed of 97.5%wt acrylonitrile, 2%wt itaconic acid and 0.5%wt styrenesulfonic acid, other conditions are the same as in Example 1.

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Abstract

The invention discloses a carbon fiber production process capable of eliminating static electricity, which is characterized in that: the production process comprises the following steps: performing wet spinning on the raw material polymer obtained by the polymerization reaction to obtain the raw silk; dissolving the quaternary ammonium salt in water , configured into a solution with a mass concentration of 0.1~1%wt, and evenly coated on the raw silk; the raw silk from the previous step is dried in the drying equipment to eliminate the moisture contained in the raw silk; pre-oxidation; low-temperature carbonization; high-temperature carbonization ; surface treatment; sizing; The carbon fiber production process that can eliminate static electricity can ensure the removal of static electricity, and at the same time, it is beneficial to ensure the prevention of deorientation of the precursor, and can ensure the strength of the precursor after oxidative carbonization and the quality of the carbon fiber.

Description

technical field [0001] The invention relates to the technical field of carbon fiber production, in particular to a carbon fiber production process capable of eliminating static electricity. Background technique [0002] Carbon fiber is a high-strength and high-modulus fiber with high temperature resistance, friction resistance, electrical conductivity, heat conduction and corrosion resistance. Its high temperature resistance ranks first among all chemical fibers. It is a powerful and excellent material. The preparation process is a A system engineering that involves multiple complex processes such as polymerization, spinning, pre-oxidation, carbonization and post-treatment and is highly correlated. [0003] Static electricity is generated by mutual friction or induction between objects. Carbon fiber can be made by carbonization of polyacrylonitrile fiber, pitch fiber, viscose fiber or phenolic fiber; it can be divided into filament, short fiber and chopped fiber according to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F9/22
CPCD01F9/22
Inventor 谈昆伦季小强刘时海谢波
Owner CHANGZHOU HONGFA ZONGHENG ADVANCED MATERIAL TECH
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