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采用一种新型的酸酐作为环氧树脂(EP)的固化剂,研制出一种快固化潜伏性中温EP/酸酐固化体系。讨论了短切玻璃纤维用量对BMC(团状模塑料)弯曲性能的影响,并采用差示扫描量热(DSC)法对该固化体系的固化反应进行了研究。结果表明:EP/酸酐固化物的玻璃化转变温度(Tg)超过了150℃,其w(吸水率)<1.0%;当φ(滑石粉)=60%(相对于总体积而言)、w(玻璃纤维)=30%(相对于填料质量而言)时,BMC的弯曲强度为45MPa。
A new type of anhydride was used as curing agent for epoxy resin (EP) to develop a fast curing latent temperature EP / anhydride curing system. The influence of the amount of chopped glass fiber on the flexural properties of BMC (Bulk Molding Compound) was discussed. The curing reaction of the cured system was studied by differential scanning calorimetry (DSC). The results show that the glass transition temperature (Tg) of the cured EP / anhydride exceeds 150 ° C and the w (water absorption) is less than 1.0%. When φ (talc) = 60% (relative to the total volume), w (Glass fiber) = 30% (with respect to filler mass), the bending strength of BMC is 45 MPa.