管材专用耐热聚乙烯的等温结晶行为  

Isothermal crystallization behavior of PE-RT tube material

作　　者：王群涛[1] 侯斌[1] 郭锐[1] 王日辉[1] 高凌雁[1] 许平[1] 石晶[1] Wang Quntao;Hou Bin;Guo Rui;Wang Rihui;Gao Lingyan;Xu Ping;Shi Jing(Research Institute of Qilu Branch, SINOPEC, Zibo 255400, China)

机构地区：[1]中国石油化工股份有限公司齐鲁分公司研究院,山东省淄博市255400

出　　处：《合成树脂及塑料》2016年第6期68-70,共3页China Synthetic Resin and Plastics

摘　　要：研究了两种管材专用耐热聚乙烯(PE-RT)的氧化诱导时间、抗冲击性能、等温结晶行为、相对分子质量及其分布等。结果表明:210℃时,两种PE-RT的氧化诱导时间均在70 min以上;其中一种PE-RT的结晶温度较高(119.0℃),结晶速率较快,更有利于满足快速成型加工的需要,其相对分子质量分布较宽、重均分子量较高,有利于提高管材的静液压强度。The oxidation induction time, impact property, isothermal crystallization behavior, molecular weight and molecular weight distribution of two polyethylene of raised temperature resistance(PE-RT) tube materials were observed. The results indicate that the oxidation induction times of both PE-RT tube materials are above 70 min at 210 ℃; crystallization temperature of PE-1 is 119.0 ℃, higher than that of PE-2; PE-1has higher rate of crystallization, which is in favor of rapid prototyping; the high molecular weight and wide molecular weight distribution of PE-1 benefit to improve the static hydraulic strength of tube.

关 键 词：聚乙烯 耐热 管材 等温结晶 结晶温度 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]