摘要
通过熔融接枝的方法制备了双峰聚乙烯接枝马来酸酐(bPE-g-MAH)作为PC/bPE共混材料的增容剂,提高了共混材料的冲击强度。共混材料的动态力学测试表明,与未增容的共混材料相比,含有相容剂bPE-g-MAH的共混材料的储能模量略低、损耗模量峰较小,并在170℃附近多出了1个tanδ峰。这个峰的产生可能是由于bPE-g-MAH使得PC/bPE界面相增加,或是由于bPE-g-MAH上的MAH基团与相界面上的PC之间可能存在某种反应作用。用扫描电镜(SEM)对共混材料液氮脆断面进行了观测,结果表明,bPE-g-MAH改善了PC和bPE的相容性。
Maleic anhydride grafted bimodal polyethylene （bPE-g-MAH） was prepared by melt grafting as a compatibilizer of polycarbonate （PC）/bimodal polyethylene （bPE） blends. The addition of the compatibilizer improved the impact strength of the blends. The dynamic mechanical tests of the blends showed that the shortage modulus and loss modulus of the compatibilized blend were lower than the uncompatibilized blend, and a new tan6 maximum was found at 170℃compared with the uncompatibilized blend. The cause of the new tan8 maximum is considered as the volume increase of the interphase, or due to some interaction between bPE-g-MAH and PC molecular chain. The morphology of the blends were observed by scanning electron microscopy （SEM）. It is shown that the addition of bPE-g-MAH improved the compatibility of PC and bPE.
出处
《化工新型材料》
CAS
CSCD
北大核心
2009年第2期100-102,共3页
New Chemical Materials
基金
陕西理工学院科研基金项目(SLGQD0743)
关键词
聚碳酸酯
双峰聚乙烯
马来酸酐
性能
polycarbonate, bimodal polyethylene, maleie anhydride, property
