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A carbon fiber composite emulsion sizing agent having low viscosity and a preparing method thereof

A composite emulsion and carbon fiber technology, which is applied in the fields of carbon fiber, fiber treatment, textiles and papermaking, etc., can solve the problems of unsuitable reinforced resin-based composite materials and low bonding strength, so as to improve sizing efficiency and uniformity, excellent performance, Reduces the effect of sizing differences

Active Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Patent CN201210195778.3 uses a water-soluble sizing agent compounded with konjac oligosaccharides and oxidized starch, but this type of sizing agent has low interface bonding strength with the resin and is not suitable for reinforcing resin-based composite materials

Method used

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  • A carbon fiber composite emulsion sizing agent having low viscosity and a preparing method thereof
  • A carbon fiber composite emulsion sizing agent having low viscosity and a preparing method thereof
  • A carbon fiber composite emulsion sizing agent having low viscosity and a preparing method thereof

Examples

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Effect test

Embodiment

[0049] Take quantitative polyester polyol components (synthesized by Shanghai Institute of Organic Chemistry), epoxy resin components (produced by Shell Corporation 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 slowly at 90°C for 20 minutes until the mixture is uniform, and then stir at high speed for 20 minutes. Then add a certain amount of anionic surfactant (synthesized by Shanghai Organic Institute) and polyether-modified polysiloxane BNK-LK380 (produced by BNK Company in the United States), 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

A carbon fiber composite emulsion sizing agent having low viscosity is disclosed. The main components of the sizing agent comprise: 20-60% of aliphatic polyester polyol, 20-60% of bisphenol F epoxy resin, 10-20% of an anionic surfactant, 0.5-5% of an antioxidant and 0.5-5% of a levelling agent. A preparing process of the sizing agent includes (1) a step of mixing resin, (2) a step of adding auxiliary agents, (3) a step of adding deionized water, and other steps. According to the prepared sizing agent, the emulsion solid content is 30-60%, the emulsion pH is 6.0-8.0, the emulsion average particle size is 100-300 nm, and the emulsion surface tension is less than 45 mPa.s. The prepared sizing agent is high in inner fluidity and high in uniformity degree. Sized carbon fiber is low in difference between inner and outer sizing amounts and is better and more stable in performance.

Description

technical field [0001] The invention relates to a sizing agent, in particular to a low-viscosity carbon fiber composite emulsion sizing agent and a preparation method thereof, belonging to the technical field of fine chemicals. Background technique [0002] In the manufacturing process of high-performance carbon fiber, fiber sizing is an essential link. Through carbon fiber sizing, the clustering, wear resistance, toughness, gloss, antistatic properties, etc. of the obtained carbon fiber can be improved, and the performance requirements of the carbon fiber in the subsequent weaving, laying, winding and other composite material manufacturing processes can be met. At the same time, according to different composite material resin systems and forming engineering process conditions, the matrix resin wettability of carbon fibers and the interfacial bonding strength of fiber-reinforced resin-based composites obtained by curing and forming are improved. [0003] Carbon fiber sizing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/507D06M15/55C08J5/06C08K9/04C08K7/06D06M101/40
Inventor 黄翔宇季春晓顾文兰曹阿民刘瑞超吴嵩义边邵光常丽
Owner CHINA PETROLEUM & CHEM CORP
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