A kind of high bending strength oxidized nano carbon material/carbon fiber/epoxy resin composite material and preparation method thereof
A technology for oxidizing nano-carbon and epoxy resin, which is applied in the field of composite materials, can solve the problems of nano-carbon material/carbon fiber/epoxy resin composite material performance improvement, production and application restrictions, unfavorable industrial production, long reaction route, etc., to achieve Excellent mechanical properties, environmental protection and efficiency improvement
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Embodiment 1
[0072] Triglycidyl p-aminophenol and the graphene oxide aqueous dispersion whose mass concentration is 0.1wt% are mixed at room temperature with a weight ratio of 1:250, and mechanically stirred at a speed of 100 rpm at 25°C for 2 minutes, then ready It is observed that the water phase becomes clear, and the graphene oxide is all transferred to the triglycidyl p-aminophenol, and the clear water is poured out, and the mixture is heated at 230° C. in a vacuum oven for 2 minutes to obtain graphene oxide / Triglycidyl p-aminophenol mixture. Add 62.5 parts by weight of triglycidyl p-aminophenol to 14.5 parts by weight of the above mixture for dilution, and then add 23 parts by weight of curing agent thiomethyltoluenediamine. In order to determine the content of graphene oxide, a small amount of the mixture was heated and solidified at 200° C., and then the weight content of graphene oxide was determined to be 3 wt % by thermogravimetric method. Its test temperature ranges from room...
Embodiment 2
[0075] Triglycidyl p-aminophenol and the graphene oxide aqueous dispersion with a mass concentration of 0.5wt% are mixed at room temperature with a weight ratio of 1:5, and mechanically stirred at a speed of 1000 rpm at 10°C for 4 minutes. It is observed that the water phase becomes clear, and the graphene oxide is all transferred to triglycidyl p-aminophenol, and the clear water is poured out, and the mixture is heated at 170° C. in a vacuum drying oven for 10 minutes to obtain graphene oxide / Triglycidyl p-aminophenol mixture. Add 5 parts by weight of the mixture to 70 parts by weight of triglycidyl p-aminophenol for dilution, and then add 25 parts by weight of curing agent thiomethyltoluenediamine. It is measured that the weight content of graphene oxide is 0.1wt%. The graphene oxide / epoxy resin / curing agent mixture was compounded with unidirectional carbon fiber cloth (T300, Toray, Japan) by hand lay-up, and cured under pressure on a flat vulcanizer, cured at 170°C for 3 ...
Embodiment 3
[0077] Triglycidyl p-aminophenol and the graphene oxide aqueous dispersion with a mass concentration of 0.25 wt% are mixed at room temperature with a weight ratio of 1:10, and after mechanical stirring at a speed of 100 rpm at 25°C for 0.5 minutes, the aqueous phase When it becomes clear, the graphene oxide is all transferred to triglycidyl p-aminophenol, the clear water is poured out, and the mixture is heated to 230°C for spray drying, and the heating time is 2 minutes to obtain graphene oxide / triglycidyl p-Aminophenol mixture. 10 parts by weight of the mixture were diluted with 60 parts by weight of triglycidyl p-aminophenol, and then 30 parts by weight of curing agent diaminodiphenyl sulfone was added. It is measured that the weight content of graphene oxide is 0.2wt%. The graphene oxide / epoxy resin / curing agent mixture was composited with unidirectional carbon fiber cloth (T300, Toray, Japan) by hand lay-up, and cured under pressure on a flat vulcanizer, cured at 170°C f...
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