管材专用HDPE树脂的性能  

Properties of HDPE special resin for tubing

作　　者：张娜[1] 

机构地区：[1]中国石油化工股份有限公司天津分公司研究院,天津市300270

出　　处：《合成树脂及塑料》2016年第2期67-70,共4页China Synthetic Resin and Plastics

摘　　要：分析了PE80级管材专用高密度聚乙烯K44-08-122与国产同类产品在力学性能、相对分子质量及其分布、毛细管流变性能、结晶性能等方面的差异。结果表明:与参比试样相比,K44-08-122的断裂拉伸应变达616%,简支梁缺口冲击强度较高,韧性较好;K44-08-122的氧化诱导时间为80.7 min,远大于参比试样的34.0min,而且具有良好的力学性能和加工性能;K44-08-122的结晶温度较高,熔融温度较低;K44-08-122满足GB/T17219—1998的要求,通过了PE80级管材分级认证,各项性能达到PE80级管材要求。This paper describes the differences between K44-08-122 and domestic similar special resin for tubing in terms of capillary rheological curve, crystallization, mechanical properties, molecular weight and distribution. The results show that elongation at break of K44-08-122 reaches 616%, its simply supported beam notched impact strength and toughness are higher than that of contrast sample. Oxidation induction time of K44-08-122 is 80.7 minutes, which is far greater than 34.0 minutes of contrast sample. The crystal temperature of K44-08-122 is high while the melting temperature is lower; it has good mechanical properties and processing performance. It meets the requirements of GB/T 17219—1998, passes the certification of pipe PE80 grade, which meets the requirements of PE80 pipes.

关 键 词：高密度聚乙烯 管材专用树脂 力学性能 冲击强度 毛细管流变性能 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]