Abstract

Monodispersed bismaleimide resin microspheres with diameter of 3 μm were prepared by chemically induced phase separation in polyetherimide and bimaleimide resin blends.The morphology of bismaleimide resin microspheres was investigated by SEM,and BMI resin microsphere particle sizes and their distribution were characterized by LPS.The results showed that the morphology of bismaleimide resin microspheres has evident relations with the structure of the used polyetherimide and polyesterimide.With increase of polyetherimide content,the microsphere size decreased,but the size distribution variation showed a wide-narrow-wide process.The DSC measurements showed that T_g of bismaleimide resin microspheres was 215~218℃ slightly lower than that of the neat bismaleimide resin.

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