增容剂CPE—g—AS对HDPE／AS共混本系性能的影响

研究了氯化聚乙烯与苯乙烯、丙烯腈的接枝共聚物（ＣＰＥ－ｇ－ＡＳ）对高密度聚乙烯／苯乙稀－丙烯腈聚物（ＨＤＰＥ／ＡＳ）共混体系热性能、力学性能及形态的影响，差示扫描热量法（ＤＳＣ）测度表明采用ＣＰＥ－ｇ－ＡＳ作为ＨＤＰＥ／ＡＳ共混体系的增容剂增加了两相间的相互作用力，扫描电镜ＳＥＭ照片显示分散相的粒子尺寸明显减少，ＣＰＥ－ｇ－ＡＳ有效的提高了共混体系的力学性能。

The Effect of the CPE_g_AS as a Compatibilizer on Thermal Properties, Mechanical Properties and the Morphology of HDPE/AS Blends

The blends of high_density polyethylene (HDPE) and styrene_acrylonitrile copolymer (AS) were compatibilized by the graft copolymer of styrene and acrylonitrile onto chloronated polyethylene (CPE_g_AS).And the effects of CPE_g_AS contents on thermal properties, mechanical properties and morphology of HDPE/AS blends were investigated. DSC results indicated that CPE_g_AS could improve the interaction between the two components. SEM micrographs showed that the compatibilizer CPE_g_AS could reduce the dispersed phase size and brought about an improvement of the tensile strength of the blends. The introduction of compatibilizer CPE_g_AS effectively improved the physical mechanical properties of HDPE/AS blends.