抗冲聚丙烯1215C的结构研究  

Structure Study of Impact Resistant Polypropylene 1215C

作　　者：柴子斌[1] 陈红[1] 明军[1] 

机构地区：[1]中国石化扬子石油化工有限公司南京研究院,江苏南京210048

出　　处：《现代塑料加工应用》2016年第5期27-30,共4页Modern Plastics Processing and Applications

摘　　要：采用分析型升温淋洗仪（A—TREF）研究了抗冲聚丙烯1215C的化学组成分布，利用制备型升温淋洗仪（P-TREF）、核磁共振仪（NMR）、差示扫描量热仪（DSC）、高温凝胶色谱（GPC）等方法研究了抗冲聚丙烯1215C的组分含量、序列结构、相对分子质量、热行为。结果表明：P—TREF所得7个组分中，第1个组分质量分数21．64％，具有典型的乙丙橡胶结构，相对分子质量较高且分布窄。第2～4个组分质量分数共计7．51％，主要为长乙烯链段的乙丙共聚物，含有少量低相对分子质量聚丙烯。相对分子质量较大且分布宽。第5个组分质量分数为4．38％，是91．83％较低相对分子质量聚丙烯和8．17％聚乙烯组成的混合物。第6～7组分为聚丙烯均聚物，质量分数为66．02％，相对分子质量较高且分布窄。Chemical composition distribution of impact resistant polypropylene （PP） 1215C was studied by A-TREF, and the fractions content, sequential structure, relative molecular mass,thermal behavior of impact resistant PP 1215C were studied by P-TREF, NMR,DSC, GPC respectively. The results show that there are seven fractions obtained from P-TREF. The mass fraction of the first component is 21. 64%,and it has typical EPR structure with relative high molecular mass and narrow distribution. The mass fraction from the second to fourth components are 7.51%, which are accepted as long ethylene-chain copolymer, with relative high molecular mass and broad distribution, and there＇s also a little of low relative molecular mass PP. The mass fraction of the fifth component is 4. 38%, it is a mixture with 91. 83% low relative molecular mass PP and 8.17% polyethylene. The sixth and seventh components are high molecular mass and narrow distributed PP, and these mass fractions reach 66.02%.

关 键 词：抗冲聚丙烯 结构表征热 分析 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]