Carbon fiber composite emulsion sizing agent with low surface tension and high particle size stability and preparation method thereof

A technology of low surface tension and composite emulsion, which is applied in the fields of carbon fiber, fiber treatment, textiles and papermaking, etc., can solve the problems of low surface tension and high stability of sizing agents, and achieve long-term storage and use, small particle size change rate, Highly stable effect

Active Publication Date: 2018-01-09
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, whether the prepared sizing agent can have low surface tension and high stability is not mentioned.

Method used

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  • Carbon fiber composite emulsion sizing agent with low surface tension and high particle size stability and preparation method thereof
  • Carbon fiber composite emulsion sizing agent with low surface tension and high particle size stability and preparation method thereof
  • Carbon fiber composite emulsion sizing agent with low surface tension and high particle size stability and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0047] Take quantitative polyester polyol components (synthesized by Shanghai Institute of Organic Chemistry), epoxy resin components (produced by Shell Company of the United States), and 2,6-di-tert-butyl-p-cresol (produced by Sinopharm Group) and add them to 500ml In a four-neck flask, stir at a low speed for 20 minutes at 110°C until the mixture is uniform, and then stir at a high speed for 20 minutes. Then add a certain amount of nonionic surfactant (produced by Jiangsu Haian Petrochemical Factory), polyether modified polysiloxane BNK-LK380 (produced by American BNK Company), stir at high speed for 20 minutes, and then gradually lower the temperature. When the temperature in the flask dropped to 75°C, deionized water was added dropwise to the flask and the stirring was continued at a high speed. When the total amount of dripping water reaches a certain quality, the reaction is stopped to obtain a carbon fiber composite sizing agent emulsion.

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Abstract

The invention discloses a carbon fiber composite emulsion sizing agent with low surface tension and high particle diameter stability. , 15-25% non-ionic surfactant, 0.5-2.5% antioxidant, 0.5-2.5% leveling agent, the preparation process includes (1) resin mixing, (2) adding additives, (3) adding deionization water and other steps. The solid content of the sizing agent emulsion prepared by the present invention is 30-60%, the pH of the emulsion is 7.0-9.0, the average particle diameter of the emulsion is 100-300nm, the particle diameter change rate is <15%, the surface tension of the emulsion is <35mN / m, and the prepared sizing agent The emulsion has high stability, can be stored for a long time, has strong ability to soak and absorb carbon fiber, and has good online sizing effect.

Description

technical field [0001] The invention belongs to the field of carbon fiber sizing agents, in particular to a carbon fiber composite emulsion sizing agent with low surface tension and high particle diameter stability and a preparation method thereof. Background technique [0002] Carbon fiber has high specific strength, high specific modulus, high temperature resistance, corrosion resistance and excellent thermal conductivity, electrical conductivity, radiation resistance and other comprehensive properties. The fiber-reinforced resin-based composite materials prepared by it are widely used in aerospace, aviation, construction, industry and other fields . However, carbon fiber is a brittle material, and various mechanical frictions in the process can easily cause hair and breakage of carbon fiber, so that the resin matrix cannot be fully infiltrated. At the same time, the surface of carbon fiber is chemically inert, and the adhesion between it and the resin matrix is ​​poor, w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/507D06M15/55D06M15/53D06M13/152D06M15/647D06M101/40
Inventor 季春晓顾文兰黄翔宇曹阿民刘瑞超张捷高佳奕翁丽萍
Owner CHINA PETROLEUM & CHEM CORP
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