定径套对PPR管材挤出过程中口模膨胀的影响  

Effect of Sizing Set on Die Swell During Extrusion Process of PPR Pipe

作　　者：冉崇文[1,2] 莫明[1,2] 冯凯[1,2] 席军[1,2] 朱军[1,2] Ran Chongwen Mo Ming Feng Kai Xi Jun Zhu Jun(Research Institute of petrochina Dushanzi Company Petrochemical,Kelamayi, Xinjiang,833699 Xinjiang Uygur Autonomous Region Key laboratory of Rubber-plastic Materials, Kelamayi, Xinjiang, 833699)

机构地区：[1]中国石油天然气股份有限公司独山子石化分公司研究院,新疆克拉玛依833699 [2]新疆维吾尔自治区橡塑重点实验室,新疆克拉玛依833699

出　　处：《现代塑料加工应用》2016年第6期49-51,共3页Modern Plastics Processing and Applications

摘　　要：对5种无规共聚聚丙烯(PPR)管材专用料进行管材挤出试验,确定了影响PPR管材制样成功率的因素。分析了定径套对PPR管材制样过程中口模膨胀的影响,并对定径套的内径及挡水环水路进行改造。改进后,口模膨胀现象明显降低。The main factors influencing the success rate of PPR tube sample were determined by the tube extrusion experiment of five kinds of PPR pipes. The effect of the sizing set on die swell during the extrusion of PPR pipes was analyzed. The inner diameter of the sizing set and the water retaining ring were modified, and the influence of the sizing set on the extrusion of PPR pipe was discussed. After the improvement,die swell phenomenon was obviously decreased.

关 键 词：无规共聚聚丙烯 管材 定径套 口模膨胀 挤出工艺 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]