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A polyetherimide resin-based carbon fiber suspension sizing agent and preparation method thereof

A technology of polyetherimide resin and suspension, which is applied in the fields of carbon fiber, fiber treatment, textiles and papermaking, etc. It can solve the problems of poor safety and environmental protection, product stability, etc., and achieve temperature resistance and interface Excellent binding ability, easy preparation, and excellent stability

Active Publication Date: 2022-02-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can improve the interfacial bonding strength between carbon fiber and polyetherimide, but it contains a large amount of low-boiling volatile solvents, which is not safe and environmentally friendly, and product stability is easily affected

Method used

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  • A polyetherimide resin-based carbon fiber suspension sizing agent and preparation method thereof
  • A polyetherimide resin-based carbon fiber suspension sizing agent and preparation method thereof
  • A polyetherimide resin-based carbon fiber suspension sizing agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～8

[0038] Put quantitative polyetherimide resin powder and sodium polyacrylate into stirring tank A in turn, and gradually add quantitative deionized water dropwise. When the amount of water added reaches 25wt% of the total feeding amount, start the mechanical stirring, and continuously stir at a certain speed. And continue to add the remaining amount of water, stir for a certain time to obtain a uniform white emulsion, discharge and transfer to the stirring kettle B equipped with a high-speed emulsifier, add a quantitative amount of alkylphenol polyoxyethylene ether, open the high-speed emulsifier, Continue stirring at a fixed rotational speed, and discharge to obtain a milky white suspension sizing agent.

[0039] The polyetherimide powder was from General Electric Company of the United States, and the sodium polyacrylate and alkylphenol polyoxyethylene ether were from BASF Corporation. The solid components of the suspension sizing agent prepared in Examples 1-8 are shown in Ta...

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Abstract

The invention discloses a polyetherimide resin-based carbon fiber suspension sizing agent and a preparation method thereof. The polyetherimide resin-based carbon fiber suspension sizing agent is composed of polyetherimide resin powder, sodium polyacrylate, alkylphenol polyoxyethylene ether and deionized water; the total mass of solid components is 100%, Wherein: polyetherimide resin powder 65-75 wt%, sodium polyacrylate 12-17 wt%, alkylphenol polyoxyethylene ether 13-18 wt%. The sizing agent prepared by the invention is used to prepare the sizing carbon fiber, which is suitable for intermediates such as carbon fiber fabrics and prepregs for polyetherimide resin-based composite materials, and has good process performance, excellent temperature resistance and interface bonding ability.

Description

technical field [0001] The invention belongs to the technical field of carbon fiber sizing agents, in particular to a polyetherimide resin-based suspension type sizing agent and a preparation method thereof. Background technique [0002] Polyetherimide resin is composed of regularly alternating and repeating ether and imide rings. It has excellent mechanical properties, high temperature resistance and dimensional stability. In the polyetherimide resin, adding carbon fiber as a reinforcing phase can prepare a carbon fiber reinforced polyetherimide resin matrix composite material with excellent performance. The material combines the respective properties of carbon fiber and polyetherimide resin, and has broad application prospects. [0003] The interface layer of carbon fiber reinforced polyetherimide resin matrix composites is an important factor affecting the performance of composite products. The interface layer is usually composed of three phases of carbon fiber-sizing a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/59D06M15/53D06M15/263D06M101/40
Inventor 季春晓黄翔宇曹阿民刘瑞超刘杰吴嵩义许璐璐田明伟
Owner CHINA PETROLEUM & CHEM CORP
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