软聚氯乙烯六角齿管材挤出成型

EXTRUTION OF SIX TOOTH TUBE OF PVC

本文论述了软聚氯乙烯(PVC)六角齿管材挤出成型加工研究。PVC树脂100份加增塑剂80～130份、稳定剂2.5份、填料10份、炭黑1.5份、润滑剂适量,经高速热混合,RC-S5同向双螺杆挤出机造粒,SJ-30×25(B)S单螺杆挤出机挤出,制得软PVC六角齿管材。试验结果表明:混料温度在85～120℃,造粒温度在130～155℃,产品加工机头口模温度在150±2℃.机头口模压缩比>2,机头口模平直段L=10～25mm时,可获得质量较好的软PVC六角齿管材。

This paper describes a research on extrution of six tooth tube of PVC. The six tooth tube is produced by adding PVC resin 100, plasticizer 80～130, stabilizer 2.5, filler 10, carbon black 1.5 and suitable amount of lubricant, then mixing them together at high velosity and temperature, extruding the pellets by RC-65 co-rotating twin screw extruder and extruding the products by SJ-30×25(B)S single screw extruder. The experimental result shows that better six tooth tube of PVC is obtained when the temperature of mixing is 85～120℃, the temperature of pellets extruding is 130～155℃, the temperature of die for extruding the products is 150±2℃, the reduction ratio of the die is greater than two and the length of the die is 10～25mm.