聚丙烯催化合金的力学性能与结构分析  

Mechanical properties and structural analysis of polypropylene catalloy

作　　者：刘小燕[1] 张平生[1] 杨战军[1] 吴建[1] 

机构地区：[1]中国石油兰州化工研究中心,甘肃兰州730060

出　　处：《石化技术与应用》2010年第2期120-122,共3页Petrochemical Technology & Application

基　　金：国家863项目"汽车用聚烯烃材料单一化关键技术"子课题:"聚丙烯釜内合金千吨级中试研究Ⅰ"(2008AA030902)

摘　　要：利用选择性溶解、核磁共振(13C-NMR)、扫描电子显微镜(SEM)等方法对釜内聚丙烯催化合金(PP-c)3个试样的分子序列组成和相形貌进行了分析,并与其力学性能进行了关联。结果表明,合金的力学性能与其乙丙无规共聚物EPR含量、长序列嵌段共聚物EEP和EEE含量以及总乙烯含量密切相关,这些组分含量的提高有利于合金刚性和韧性的增强;橡胶相尺寸适中且分布均匀也有助于合金力学性能的提高。The methods of selective dissolution,nuclear magnetic resonance(13 C-NMR) and scanning electron microscopy(SEM) were used to characterize the three pieces polypropylene-catalloies(PP-c) samples,and the results were correlated with their mechanical properties.The mechanical properties of PP-c were closely related to the content of ethylene-propylene random copolymer(EPR),long sequence block copolymer(EEP,EEE)and the total ethylene content.The increase of the content of these components were beneficial to the...

关 键 词：聚丙烯 聚丙烯催化合金 分子序列组成 内部形貌 力学性能 乙丙无规共聚物 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]