马来酸酐熔融接枝高抗冲聚苯乙烯的研究

Grafting of Maleic Anhyride on HIPS by Melt Mixing

在ＨＩＰＳ的聚丁二烯链上熔融接枝马来酸酐进行改性。接枝共聚物在３０℃和５０℃左右呈现双玻璃化转变。讨论了共混时间、反应物组成等对接枝率的影响。

HIPS has been grafted by maleic anhydride in the presence of dicumyl peroxide.The influences of the reaction time and the feed ratio of the reactants on the graft rate havebeen examined. The IR spectra revealed the grafting. As to the dynamic mechanical propertyof the HIPS-g-MA, two new damping peaks at 29℃ and 52℃ were observed on its tanδ-TCurve.