A kind of high temperature resistant carbon fiber sizing agent containing graphene oxide and preparation method thereof

A technology of high temperature resistance and carbon fiber, which is applied in the field of preparation of emulsion-type carbon fiber sizing agent, can solve the problems of low crosslinking density, low glass transition temperature, poor heat resistance of cured products, etc. The production and preparation process is simple and easy to operate

Active Publication Date: 2020-06-09
北京石墨烯技术研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the type and amount of emulsifier are the most important. The hydrophilic-lipophilic balance value of the emulsifier is not suitable, and the emulsification of the resin cannot be realized; if the amount of emulsifier is too large, the thermal stability of the carbon fiber composite material will be insufficient, which cannot meet the requirements of the application. Require
[0004] At present, epoxy emulsion sizing agents mainly use glycidyl ether epoxy resins such as E51 and E44 as the main resin. However, the cured product of this type of glycidyl ether epoxy resin has a low crosslinking density and a low glass transition temperature. , poor heat resistance, which affects the use of composite materials in some special fields, therefore, it is urgent to develop high temperature resistant carbon fiber sizing agent

Method used

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  • A kind of high temperature resistant carbon fiber sizing agent containing graphene oxide and preparation method thereof

Examples

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Effect test

example 1

[0029] Take each raw material by the following parts by mass:

[0030] 100 parts of tetraglycidyl diaminodiphenylmethane;

[0031] 20 parts of diethanolamine;

[0032] 3.3 parts of alkylphenol polyoxyethylene ether;

[0033] 9.9 parts of triphenylethylphenol polyoxypropylene polyoxyethylene block copolymer;

[0034] 12 parts of propylene glycol methyl ether;

[0035] 280 parts of graphene oxide aqueous solution;

[0036] Prepare high temperature resistant emulsion type carbon fiber sizing agent according to the following method:

[0037] Step 1) The epoxy resin tetraglycidyl diaminodiphenylmethane and diethanolamine were reacted at a constant temperature of 70° C. for 60 minutes to obtain a hydrophilic modified glycidylamine epoxy resin.

[0038] Step 2) Add the composite emulsifier, propylene glycol methyl ether of alkylphenol polyoxyethylene ether and tristyrylphenol polyoxypropylene polyoxyethylene block copolymer to the modified glycidylamine type epoxy resin obtained...

example 2

[0040] Take each raw material by the following parts by weight:

[0041] 100 parts of N,N,N',N'-tetraglycidyl-3,3'-diethyl-4,4'-diaminodiphenylmethane;

[0042] 20 parts of diethanolamine;

[0043] 3.3 parts of alkylphenol polyoxyethylene ether;

[0044] 9.9 parts of triphenylethylphenol polyoxypropylene polyoxyethylene block copolymer;

[0045] 12 parts of propylene glycol methyl ether;

[0046] 280 parts of graphene oxide aqueous solution;

[0047] Prepare high temperature resistant emulsion type carbon fiber sizing agent according to the following method:

[0048] Step 1) React epoxy resin N,N,N',N'-tetraglycidyl-3,3'-diethyl-4,4'-diaminodiphenylmethane and diethanolamine at 75°C for 60min , to obtain a hydrophilic modified glycidylamine epoxy resin;

[0049] Step 2) Add the composite emulsifier, propylene glycol methyl ether of alkylphenol polyoxyethylene ether and tristyrylphenol polyoxypropylene polyoxyethylene block copolymer to the modified glycidylamine type epo...

example 3

[0051] Take each raw material by the following parts by weight:

[0052] 100 parts of triglycidyl p-aminophenol;

[0053] 25 parts of diethanolamine;

[0054] 3.5 parts of alkylphenol polyoxyethylene ether;

[0055] 10.5 parts of triphenylethylphenol polyoxypropylene polyoxyethylene block copolymer;

[0056] 12.5 parts of ethylene glycol monoethyl ether;

[0057] 300 parts of graphene oxide aqueous solution;

[0058] Prepare high temperature resistant emulsion type carbon fiber sizing agent according to the following method:

[0059] Step 1) The epoxy resin triglycidyl p-aminophenol and diethanolamine were reacted at a constant temperature of 70° C. for 90 minutes to obtain a hydrophilic modified glycidylamine epoxy resin;

[0060] Step 2) Add the composite emulsifier of alkylphenol polyoxyethylene ether and tristyrylphenol polyoxypropylene polyoxyethylene block copolymer, ethylene glycol to the modified glycidylamine type epoxy resin obtained above. Monoethyl ether diluen...

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Abstract

The invention relates to a graphene oxide-containing high temperature resisting carbon fiber sizing agent and a preparation method thereof. The method comprises the following steps: 1) introducing a hydrophilic group into a glycidyl amine type epoxy resin through the reaction of the active hydrogen on hydramine and the epoxy group on the high temperature resisting glycidyl amine type epoxy resin and 2) adopting the modified glycidyl amine type epoxy resin, an emulgator, a diluent, deionized water and a graphene oxide aqueous solution for preparing the high temperature resisting carbon fiber sizing agent in the manner of inversed phase emulsification. The graphene oxide-containing high temperature resisting carbon fiber sizing agent and a preparation method thereof disclosed by the invention have the advantages that the preparation process is simple, the operation is easy, the defects of low stability, high cost, environmental pollution, and the like, of the solvent type sizing agent are overcome, the collection property, splitting property and abrasion resistance of the carbon fiber subjected to the sizing treatment with the prepared sizing agent are improved and the heat resistance and the monofilament breaking strength of the carbon fiber and the overall performance of the compound material thereof are all promoted.

Description

technical field [0001] The invention relates to a high-temperature-resistant sizing agent for carbon fibers and a preparation method thereof, in particular to a preparation method of an emulsion-type carbon fiber sizing agent prepared from graphene oxide and high-temperature-resistant glycidylamine epoxy resin. Background technique [0002] Carbon fiber has the advantages of high specific strength, high specific modulus, light weight, high temperature resistance, corrosion resistance, etc., and is widely used in aerospace, transportation, construction, sporting goods and other fields. However, carbon fiber is brittle, and mechanical friction during the manufacturing process will cause carbon fiber monofilaments to break and fluff. Studies have shown that sizing carbon fibers can effectively protect carbon fibers and reduce the incidence of hair and broken filaments. In addition, after sizing treatment, a layer of resin transition layer is formed on the surface of carbon fib...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/55D06M11/74C08G59/14D06M101/40
CPCC08G59/1477D06M11/74D06M15/55D06M2101/40D06M2200/40
Inventor 杨程任志东邢悦郝思嘉戴圣龙
Owner 北京石墨烯技术研究院有限公司
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