挤出工艺条件对PP-R管材性能的影响  

The Influence of Extrusion Process Conditions on the Properties of PP-R Pipe

作　　者：韩超 HAN Chao(Henan Technical College of Construction,Zhengzhou 450064,China)

机构地区：[1]河南建筑职业技术学院,河南郑州450064

出　　处：《塑料科技》2021年第5期61-65,共5页Plastics Science and Technology

摘　　要：采用单螺杆挤出无规共聚聚丙烯(PP-R)管材,探讨挤出加工温度、螺杆转速、冷却水温度等工艺条件对PP-R管材性能的影响。结果表明:当加工温度在200℃左右,螺杆转速为96.5 r/min,冷却水温在20~25℃时,制备的dn20×en2.8规格的PP-R管材加工性能最稳定,力学性能及静液压性能优异。为进一步确定管材性能的影响因素,采用正交试验法对挤出工艺条件进行优化,正交试验结果表明:加工温度为200℃,螺杆转速为96.5 r/min,冷却水温30℃。A single screw was used to extrude random copolymer polypropylene(PP-R) pipes. The effects of processing temperature, screw speed, cooling water temperature and other process conditions on the properties of PP-R pipes were discussed. The results show that when the processing temperature is about 200 ℃, the extrusion speed is 96.5 r/min, and the cooling water temperature is 20~25 ℃, the PP-R pipe of dn20×en2.8 specification has the most stable processing performance, mechanical propety and hydrostatic performance are extremely excellent. In order to further determine the influence factors of pipe properties, an orthogonal experiment method was used to optimize the extrusion process conditions. The orthogonal test results show that the processing temperature is 200 ℃, the screw speed is 96.5 r/min, and the cooling water temperature is 30 ℃.

关 键 词：无规共聚聚丙烯 拉伸性能 静液压性能 正交试验 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]