PPR管材料冲击强度的影响因素分析  

Factors Influencing the Impact Strength of PPR Tube Material

作　　者：胡廷芳[1,2] 莫明[1,2] 赵劲操 周卫新[3] 郑佳[3] 

机构地区：[1]中国石油独山子石化公司研究院,新疆独山子833699 [2]新疆橡塑材料实验室,新疆独山子833699 [3]中国石油独山子石化公司乙烯厂,新疆独山子833699

出　　处：《塑料工业》2017年第4期83-86,共4页China Plastics Industry

摘　　要：对影响无规共聚聚丙烯(PPR)管材料冲击强度的因素进行了考察。结果表明,乙烯质量分数控制在3%~5%之间为宜,乙烯在无规物中的分散性利于提高冲击强度;弹性体添加剂可提高PPR的冲击强度;熔体质量流动速率(MFR)控制在0.24~0.30 g/10min间,MFR偏高,冲击强度下降;测试冲击强度的样条需严格控制制备条件,防止冲击强度测试值偏差大。The factors influencing the impact strength of random copolypropylene （PPR） tube material were discussed. The results show that the content of ethyl controlled in the range of 3wt% - 5wt% is suitable. The dispersion of ethylene in the PPR base is beneficial to increase the impact strength of the PPR tube material. The additive agent of the elastic body can increase the impact strength of PPR. When controlling the melting flow rate （MFR） within 0.24 -0. 30 g/10min, the higher of MFR, the lower of the impact strength of PPR tube material. The test sample for impact strength should be strictly in accordance with the preparation conditions to prevent the impact strength test value deviation.

关 键 词：无规共聚聚丙烯 冲击强度 熔体质量流动速率 添加剂 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]