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Carbon fiber sizing agent and preparation method thereof

A carbon fiber and sizing technology, applied in the directions of carbon fiber, fiber processing, textiles and papermaking, can solve problems such as poor dispersibility, achieve good wettability and compatibility, good stability, and reduce costs.

Inactive Publication Date: 2015-11-18
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But nano-SiO 2 For inorganic nanoparticles, the dispersion in epoxy resin is not good

Method used

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  • Carbon fiber sizing agent and preparation method thereof
  • Carbon fiber sizing agent and preparation method thereof
  • Carbon fiber sizing agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A carbon fiber sizing agent, the sizing agent is made of the following raw materials in parts by mass:

[0048]

[0049] The additive is epoxy oligomeric silsesquioxane C 28 h 58 0 13 Si 6 , the general expression is R' 2 R 4 [SiO 1.5 ] 6 .

[0050] where R=C 4 h 9 , whose molecular structure is R'=C 6 h 11 o 2 , whose molecular structure is

[0051] Mix the additive with 1,4-butanediol diglycidyl ether at a ratio of 1:8, stir for 20 minutes, add to 100 parts of 4,4'-diaminodiphenylmethane epoxy resin, and stir for 30 minutes to obtain a compound With resin.

[0052] Mix nonylphenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether, and sorbitan fatty ester in a ratio of 2:1:4 and heat to 80°C with stirring to obtain a hydrophilic-lipophilic balance (HLB) of 8.43 mixed emulsifier.

[0053] Mix the above compounded resin and emulsifier at a ratio of 10:1, and stir evenly at 70°C, then add deionized water to it at a rate of 1mL / min until th...

Embodiment 2

[0058] A carbon fiber sizing agent, the sizing agent is made of the following raw materials in parts by mass:

[0059]

[0060] Epoxy oligomeric silsesquioxane C 36 h 76 o 13 Si 8 , the general expression is R'R 7 [SiO 1.5 ] 8 .

[0061] where R=C 4 h 9 , whose molecular structure is R'=C 8 h 13 O, whose molecular structure is

[0062] Mix the additive and neopentyl glycol diglycidyl ether in a ratio of 1.05:12, stir for 30 minutes and add it to 160 parts of multifunctional epoxy resin (AFG90) and bisphenol A epoxy resin (E44) in equal proportions The mixture was stirred for 30 minutes to obtain a composite resin.

[0063] Alkylphenol polyoxyethylene ether, 2,4-dicumyl polyoxyethylene ether, and polyoxyethylene sorbitan ester were mixed in a ratio of 1:2:1 and heated and stirred to obtain a hydrophilic-lipophilic balance value ( HLB) is a mixed emulsifier of 11.7. Mix the above compounded resin and emulsifier at a ratio of 9:1 and stir evenly at 80°C, then...

Embodiment 3

[0068] A carbon fiber sizing agent, the sizing agent is made of the following raw materials in parts by mass:

[0069]

[0070]

[0071] Epoxy oligomeric silsesquioxane C 36 h 76 o 13 Si 8 , the general expression is R'R 7 [SiO 1.5 ] 8 .

[0072] where R=C 4 h 9 , whose molecular structure is R'=C 8 h 13 O, whose molecular structure is

[0073] Mix the additive with neopentyl glycol diglycidyl ether in a ratio of 1:12, stir for 30 minutes and add it to 160 parts of multifunctional epoxy resin (AFG90) and bisphenol A epoxy resin (E44) in equal proportions The mixture was stirred for 30 minutes to obtain a composite resin.

[0074] Alkylphenol polyoxyethylene ether, 2,4-dicumyl polyoxyethylene ether, and polyoxyethylene sorbitan ester were mixed in a ratio of 1:2:1 and heated and stirred to obtain a hydrophilic-lipophilic balance value ( HLB) is a mixed emulsifier of 11.7. Mix the above compound resin and emulsifier at a ratio of 22:1 and stir evenly at 8...

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Abstract

The invention provides a carbon fiber sizing agent and a preparation method thereof. The sizing agent is prepared from the following raw materials in parts by mass: 10,000 to 30,000 parts of water, 5 to 15 parts of an emulsifier, 50 to 300 parts of epoxy resin, 1 to 20 parts of a diluent, 0.9 to 1.1 parts of an additive. According to the invention, organic-inorganic oligomeric silsesquioxane nanoparticles are added to the carbon fiber sizing agent, so that the nanometer effect enables the composite material prepared by the sized carbon fibers to be better in heat resistance, toughness and interfacial properties.

Description

technical field [0001] The invention relates to a sizing agent, in particular to a carbon fiber sizing agent and a preparation method thereof. Background technique [0002] Carbon fiber has a series of advantages such as high specific strength, high specific modulus, corrosion resistance, fatigue resistance, and strong design. It is widely used in many industries, and it accounts for a larger proportion in aerospace, national defense and military industries. [0003] Carbon fiber has a low elongation at break and is a brittle material. In the process of fiber production and the process of using fiber to prepare composite materials, in the process of production, processing and manufacturing composite materials, monofilaments will be broken due to mechanical friction, and even produce wool. Carbon fiber is a product obtained through high-temperature treatment, and its surface shows obvious chemical inertness. When preparing composite materials, the affinity between the fiber ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/55D06M15/65D06M101/40
Inventor 阳武何州文兰逢涛刘辉朱镇白会涛杨青
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
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