文献类型：期刊文献

中文题名：PET/LLDPE-g-MA反应共混体系的研究

英文题名：Study on Reactive Blends of PET/LLDPE-g-MA

作者：徐东东[1];王晓光[1];张洪生[1];吴驰飞[1];郭卫红[1]

机构：[1]华东理工大学材料科学与工程学院高分子合金研究室,上海200237

年份：2008

卷号：36

期号：2

起止页码：11

中文期刊名：塑料工业

外文期刊名：China Plastics Industry

收录：CSTPCD;;北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金(批准号:20574019)资助

语种：中文

中文关键词：聚对苯二甲酸乙二醇酯;线性低密度聚乙烯;LLDPE-g-MA;扩链剂;结晶性能

外文关键词：PET; LLDPE; LLDPE-g-MA; Chain Extender; Crystallizability

摘要：采用反应挤出工艺制备了PET/LLDPE-g-MA/MDI的共混合金,研究了该体系在力学性能、形貌形态和热性能的变化。结果表明:共混体系的冲击强度随着扩链剂MDI用量的增加而大幅提高,当扩链剂MDI的添加量为1.2份时,PET/LLDPE-g-MA/MDI共混合金的冲击强度达到26.9kJ/m2,比未加入MDI时增加了144%。从电镜照片分析看出,该体系形态结构随着MDI用量的增加而逐渐形出了交联网络结构。DSC结果表明扩链和交联反应的发生抑制了PET的结晶。
The reactive blends of PET/LLDPE-g-MA/MDI were prepared by means of reactive extrusion, the mechanical properties, morphological structure and thermal behavior of the blends were studied. The results showed the Charpy impact strength of PET/LLDPE-g-MA/MDI improved markedly with the increase of the content of MDI, when the content of MDI reached 1.2 phr, the impact strength was 26.9 kJ/m^2, 144% higher than that of PET/LLDPE-g-MA. The analysis of the SEM micrographs showed the morphological structure of the blend formed crosslinking network with the increase of MDI content. The results of DSC showed chain extension reaction and crosslinking restricted the crystallization of PET.