AIM改性剂增韧PC及增韧PC的物理老化行为  

Toughening of Polycarbonate by Acrylic Impact Modifiers and Aging Behavior of Toughened Polycarbonate

作　　者：谭志勇[1] 索延辉[2] 韩莹[3] 张会轩[1] 

机构地区：[1]中国科学院长春应用化学研究所 [2]中国石油吉林石化公司,吉林吉林132021 [3]长春工业大学化学工程学院,吉林长春130012

出　　处：《高分子材料科学与工程》2007年第2期137-140,共4页Polymer Materials Science & Engineering

摘　　要：用商品AIM改性剂(丙烯酸酯类冲击改性剂)与聚碳酸酯进行共混,考察了AIM改性剂用量对聚碳酸酯的冲击性能及拉伸行为的影响,发现含有4%AIM改性剂的共混物的冲击强度出现最大值。共混物的屈服强度、模量及屈服应力降随改性剂用量的增加而减小。选取AIM改性剂含量为4%的共混物样条于130℃的鼓风烘箱中进行物理老化,考察了物理老化时间对PC/AIM共混物性能的影响。发现随老化时间的延长,共混物的冲击强度降低,屈服强度和屈服应力降提高。同时也考察了老化时间对共混物拉伸行为的影响。Commercial acrylic impact modifier （AIM） were blended with bisphenol A polycarbonate. Influence of modifier content on impact strength and tensile behavior of PC/AIM blends was investigated. The blends with 4% modifiers showed maximum impact strength. And the yield strength, modulus and post yield stress drop（PYSD） decreased with the increment of modifier content. Blends with 4% modifiers were selected to carry out physical aging test in an air-circulating oven at 130℃. Influence of aging time on properties of PC/AIM blends was investigated. Impact strength of blends decreased with the increment of aging time. But yield strength and PYSD increased. Influence of aging time on tensile behavior and morphology of blends was investigated as well.

关 键 词：聚碳酸酯 AIM改性剂 物理老化 力学性能 拉伸行为 

分 类 号：O631.33[理学—高分子化学]