Epoxy resin composition, prepreg and fiber-reinforced composite material
A technology of epoxy resin and composite material, applied in the field of epoxy resin composition, prepreg and fiber reinforced composite material, can solve the problems of reduced mechanical strength, poor storage stability, difficult to use, etc., and achieve excellent flame retardancy Effect
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[0167] "Preparation Method of Epoxy Resin Composition"
[0168] Each of the epoxy resin compositions of the above-mentioned first to third aspects can be prepared by mixing the respective components. As a mixing method of each component, the method using a mixer, such as a three-roll mill, a planetary mixer, a kneader, a universal mixer, a homogenizer, and a homodisperser, is mentioned.
[0169] "Prepreg"
[0170] Each of the epoxy resin compositions of the above-mentioned first to third aspects can be impregnated into reinforcing fibers and used as a prepreg.
[0171] As the reinforcing fibers, various inorganic or organic fibers such as carbon fibers, aramid fibers, nylon fibers, high-strength polyester fibers, glass fibers, boron fibers, alumina fibers, and silicon nitride fibers can be used. Among them, carbon fiber, aramid fiber, glass fiber, boron fiber, alumina fiber, and silicon nitride fiber are preferable from the viewpoint of flame retardancy, and carbon fiber is ...
Embodiment 1
[0204] 17.5 parts by mass of C-1, 7.5 parts by mass of D-1, and 5 parts by mass of E-1 were measured, stirred, and mixed in a container. This was further finely mixed with a three-roll mill to obtain a curing agent masterbatch.
[0205] 60 parts by mass of A-1 and 82.5 parts by mass of C-1 were measured in a flask, heated to 150°C using an oil bath, and dissolved and mixed. Thereafter, it was cooled to about 60° C., and the above-mentioned curing agent masterbatch was stirred and mixed to obtain an epoxy resin composition.
[0206] The obtained epoxy resin composition is injected between two glass plates sandwiching a 2mm thick polytetrafluoroethylene spacer, and heat-cured under the curing conditions of 130°C x 2 hours and a heating rate of 2°C / min. , to get a 2mm thick resin plate.
[0207] The resulting epoxy resin composition was formed into a film with a M-500 comma coater manufactured by HIRANO TECSEED Co., Ltd. to produce 40g / m 2 resin film. Using this resin film an...
Embodiment 2、3
[0211] Except that the composition ratio was changed as shown in Table 2, the same operation was carried out as in Example 1 to prepare an epoxy resin composition. The production of the resin plate, the production of the prepreg, the production of the carbon fiber composite material plate, and their evaluation were carried out in the same manner as in Example 1. The evaluation results are shown in Table 2 together.
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