PhMI-St-AN耐热改性剂的合成及与PVC的共混发泡  

Synthesis of PhMI-St-AN Heat-Resistant Modifier and Blending Foaming with PVC

作　　者：马莉娜[1] 齐暑华[1] 程博[1] 何栋[1] 邱华[1] 尚磊 

机构地区：[1]西北工业大学理学院应用化学系,西安710129 [2]中航沈阳飞机设计所,沈阳110035

出　　处：《工程塑料应用》2012年第3期86-89,共4页Engineering Plastics Application

基　　金：西北工业大学基础研究基金项目(JC20110230)

摘　　要：采用悬浮共聚合法制备N-苯基马来酰亚胺-苯乙烯-丙烯腈(PhMI-St-AN)三元共聚物耐热改性剂,将其与聚氯乙烯(PVC)共混通过模压发泡制备了PVC/PhMI-St-AN泡沫塑料。借助傅里叶变换红外光谱、差示扫描量热分析等手段对PhMI-St-AN三元共聚物进行了表征,研究了共聚物组成对三元共聚物玻璃化转变温度(Tg)及其与PVC相容性的影响,考察了PVC/PhMI-St-AN泡沫塑料的热尺寸稳定性和吸水性。结果表明,PhMI-St-AN具有良好的耐热性能,其Tg随PhMI含量的增加而提高,PhMI-St-AN三元共聚物提高了PVC/PhMI-St-AN泡沫塑料的热尺寸稳定性,降低了吸水率。N-phenyl maleimide-styrene-acrylonitrile （ PhMI-St-AN ） terpolymer was prepared through suspension copolymerization method, and the terpolymer as heat-resistant modifiers was blended with PVC to prepare PVC / PhMI-St-AN foam plastics by moulding and foaming. Then PhMI-St-AN terpolymer was characterized by the means of FTIR, DSC et al. Effects of the terpolymer composition on the glass transition temperature （ Tg ） of PhMI-St-AN terpolymer and the compatibility between PhMI- St-AN terpolymer and PVC were studied. Meanwhile, the thermal dimensional stability and water absorption property of PVC / PhMI-St-AN foam plastics were researched. The results showed that PhMI-St-AN terpolymer had good heat resistance, and it＇ s Tg improved with the increase of PhM! content in the terpolymer. By adding PhMI-St-AN terpolymer, the thermal dimensional stability of PVC foam plastics was improved and the water absorption rate of foam plastics was reduced.

关 键 词：N-苯基马来酰亚胺-苯乙烯-丙烯腈 悬浮共聚合 PVC泡沫塑料 耐热性能 

分 类 号：TQ320.4[化学工程—合成树脂塑料工业]