CB含量对微纤化导电复合材料CB/PET/PE非等温结晶的影响  

Influence of Carbon Black Content on the Non-Isothermal Crystallization Behavior of Microfibrillar CB/Poly (Ethylene Terephthalate) /Polyethylene Conductive Microfibrillar Composites

作　　者：徐玲[1] 钟淦基[1] 代坤[1] 许向彬[1] 徐家壮[1] 李忠明[1] 

机构地区：[1]四川大学高分子科学与工程学院、高分子材料工程国家重点实验室,四川成都610065

出　　处：《高分子材料科学与工程》2010年第7期67-70,共4页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(50173049);大学生创新实验计划项目

摘　　要：采用差示扫描量热仪(DSC)研究了不同CB含量的原位微纤化复合材料CB/PET/PE在不同的冷却速率(2.5℃/min,5℃/min,10℃/min,20℃/min)的非等温结晶行为,采用扫描电子显微镜(SEM)观察微纤形态。结果表明,随CB含量增加,复合材料结晶起始温度降低,且相对结晶速率减小。SEM观察发现,CB的加入改变了微纤形态,随CB含量增加,CB粒子逐渐占据了微纤表面且纤维形态变差。Non-isothermal crystallization of carbon black（CB）/poly（ethylene terephthalate） （PET） /polyethylene（PE） conductive microfibrillar composites with electrical conductivity with different CB contents at different cooling rates were studied by differential scanning calorimetry （DSC）. The morphology of microfibrils was examined by scanning electronic microscopy （SEM）. The results show that with the increase of CB content, onset crystallization temperatures of the composite decline, and relative crystallization rate decreases. SEM observation shows that the morphology of microfibrils is changed owing to the addition of CB, the morphology of microfibrils is deteriorated with the increase of CB concentration, moreover, CB particle takes up the surface of microfibrils, which retards crystallization of the composites.

关 键 词：炭黑/聚对苯二甲酸乙二醇酯/高密度聚乙烯 非等温结晶 原位微纤化导电复合材料 

分 类 号：TQ324.8[化学工程—合成树脂塑料工业]