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Thermoplasticity sizing agent for carbon fiber and preparation and usage thereof

A carbon fiber and thermoplastic technology, which is applied in the field of solvent-based sizing agent for carbon fiber, can solve the problems of complex preparation process of thermoplastic sizing agent and pollute the environment, and achieve the effects of improving interface bonding performance, simple preparation method and stable performance.

Active Publication Date: 2012-09-12
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problems that the existing thermoplastic sizing agent has a complex preparation process and pollutes the environment when used, and provides a thermoplastic sizing agent for carbon fiber and its preparation and use method

Method used

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specific Embodiment approach 1

[0014] Specific embodiment 1: The thermoplastic sizing agent for carbon fiber of this embodiment is made of thermoplastic resin, organic solvent A and auxiliary agent; among them, thermoplastic resin and organic solvent A form the main slurry, and the mass of the thermoplastic resin is 0.05% of the main slurry mass ~3%; the mass of the auxiliary agent is 0.05% to 3% of the mass of the main slurry, and the thermoplastic resin is a polyarylether thermoplastic resin.

[0015] The sizing agent provided in this embodiment can withstand higher temperatures, and its glass transition temperature is higher than 267°C. The carbon fiber coated with the sizing agent is suitable for use with polyarylether high temperature resistant resins, such as polyether ether ketone (PEEK), polyaryl ether ketone (PPEK) containing phthalazinone, and phthalazinone Polyaryl ether sulfone ketone (PPESK), polyether ketone (PEK), polyether sulfone (PES), polyether ketone ketone (PEKK) and other composite materi...

specific Embodiment approach 2

[0016] Specific embodiment two: this embodiment is different from specific embodiment one in that the polyarylether thermoplastic resin is a polyaryletherketone resin (PPEK) containing a phthalazine structure, One or a combination of polyaryl ether sulfone resin (PPES) with benzene structure and polyaryl ether sulfone ketone resin (PPESK) with phthalazinone structure (PPESK). Others are the same as the first embodiment.

[0017] In this embodiment, when the polyarylene ether-based thermoplastic resin is a combination of several types, it is mixed at an arbitrary ratio.

specific Embodiment approach 3

[0018] Specific embodiment three: this embodiment is different from specific embodiment one or two in that: the organic solvent A is chloroform, dimethylformamide (DMF), dimethylacetamide (DMAc), nitromethylpyrrolidone ( One or a combination of NMP) and dimethyl sulfoxide (DMSO). Others are the same as the first or second embodiment.

[0019] In this embodiment, when the organic solvent A is a combination of several types, they are mixed at any ratio.

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Abstract

The invention provides a thermoplasticity sizing agent for a carbon fiber as well as a preparation method and a usage method thereof and relates to solvent sizing agent for a carbon fiber as well as a preparation method and a usage method thereof. According to the invention, the problems that the existing thermoplastic sizing agent is complicate in preparation process and pollutes the environment are solved. The preparation method is as follows: the thermoplastic resin, an organic solvent A and an adjuvant are mixed and stirred uniformly so as to obtain the thermoplastic sizing agent, when being used, the carbon fiber is dipped in the thermoplasticity sixing agent, then fractioning is carried out on the carbon fiber with agent and the treated carbon fiber is dipped in an organic solvent B, and finally the carbon fiber is dried. According to the invention, the wettability of the carbon fiber and the high performance thermoplasticity resin of polyarylether can be improved, the boundary bonding performance of the carbon fiber or the resin matrix composite of thermoplasticity polyarylether can be improved, and the thermoplasticity sizing agent has the advantages that the cost is low, the performance is stable, the utilization is stable and the environment is not polluted. The thermoplasticity sizing agent for the carbon fiber is used for the surface treatment of a carbon fiber material.

Description

Technical field [0001] The invention relates to a solvent-based sizing agent for carbon fiber and a preparation and use method thereof. Background technique [0002] As one of the most important reinforcing materials, carbon fiber has been widely used in aerospace, sports and leisure products, civil engineering, electronic products, medical equipment and other fields. In recent years, the aerospace industry has put forward the requirements for carbon fiber reinforced resin-based composites to adapt to higher temperatures, and high-performance polyarylether thermoplastic resin-based composites with higher heat resistance grades have good fatigue performance and good impact resistance. , Good toughness, good molding processability, short molding cycle and reusable advantages have attracted wide attention. [0003] In the production and processing process, the brittle carbon fiber is prone to breakage of filaments and monofilaments through mechanical friction, which affects the perfo...

Claims

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Application Information

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IPC IPC(8): D06M15/53D06M15/63D06M101/40
Inventor 刘文博王荣国张舒李晓非矫维成赫晓东
Owner HARBIN INST OF TECH
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