空心玻璃微珠和PP-g-MAH对PP力学性能及结晶性能的影响  

Effect of HGB and PP-g-MAH on Mechanical Properties and Crystallization Performance of PP

作　　者：刘志华[1] 

机构地区：[1]天津城市建设学院材料科学与工程系,天津300384

出　　处：《现代塑料加工应用》2012年第2期31-34,共4页Modern Plastics Processing and Applications

基　　金：天津市科技计划项目(10ZHXHNC09100);天津市建设系统软课题研究项目(2010-软6)资助

摘　　要：通过熔融共混挤出的方法,制备了聚丙烯(PP)/空心玻璃微珠(HGB)和PP/聚丙烯接枝马来酸酐(PP-g-MAH)/HGB复合材料。研究了HGB和PP-g-MAH对复合材料微观结构、力学性能和结晶性的影响。结果表明,PP-g-MAH可提高HGB与PP的相容性;复合材料的拉伸强度和弯曲强度随HGB的增加表现出先增大后减小的趋势,断裂伸长率和冲击韧性逐步下降;PP-g-MAH可进一步提高拉伸强度、弯曲强度和冲击强度。PP-g-MAH的加入促使产生少量β晶,HGB和PP-g-MAH都降低了PP的结晶度和结晶速率。PP/HGB and PP/PP-g-MAH/HGB composites were prepared by using melt blending extrusion. The effects of HGB and PP-g-MAH on nficrostructure, mechanical properties and crystallization of the composites were investigated. The results show that PP-g-MAH can improve the compatibility between HGB and PP. The tensile strength and flexural strength of the composites increase at first and then decrease with the increase of HGB contents, and the elongation at break and impact toughness decrease gradually. PP-g-MAH can further improve the tensile strength, flexural strength and impact strength of the composites. In addition, the addition of PP-g-MAH facilitates the generation of a minor amount of ~ crystal. Moreover, both HGB and PP-g- MAH decrease the crystallinity and crystallization rate of PIP.

关 键 词：空心玻璃微珠 聚丙烯接枝马来酸酐 聚丙烯 力学性能 结晶 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]