摘要
通过熔融反应挤出制备了一种新型马来酸酐接枝丙烯基弹性体(以下简称接枝物),研究了引发剂用量、马来酸酐(MAH)用量、交联抑制剂的种类和加工工艺条件对接枝物性能的影响。利用红外光谱对接枝物进行了结构表征,并用酸碱滴定法测定其接枝率,同时比较了该接枝物与传统马来酸酐接枝乙烯-辛烯弹性体(MAH-g-POE)在聚酰胺(PA)中的增韧效果。结果表明,随着引发剂含量的增加,接枝物的接枝率先增大后下降;随着MAH含量的增加,其接枝率先增大后趋于平稳;己内酰胺对接枝物的交联副反应抑制效果最好;接枝物作为增容剂提高了PA的熔体流动速率,达到增韧效果。
Maleic anhydride was grafted onto propylene-based elastomer via melt reaction in a twin-screw extruder. The influences of initiator, MAH concentration, crossli^king inhibitor, and processing condition on the structure and properties of the products were analyzed using FT-IR and neutralization titration. It indicated that with increasing initiator concentration the grafting degree increased first and then dropped. With increasing MAH concentration, the grafting degree increased first and then leveled off. The crosslinking during grafting was best inhibited by hexanolactam. The toughening effect of the products and traditional POE-g-MAH were compared in polyamide, and it was found that the grafted product achieved both better tougheness and flowability of polyamide.
出处
《中国塑料》
CAS
CSCD
北大核心
2011年第12期81-85,共5页
China Plastics
关键词
丙烯基弹性体
马来酸酐
接枝
高流动性
增韧
propylene-based elastomer
maleic anhydride
grafting
high flow
toughening
