挤出成型中热塑性聚氨酯弹性体的熔体破裂探讨及应用  

Melt Fracture of Thermoplastic Polyurethane Elastomer in Single Screw Extrusion and Its Application

作　　者：陈利军 

机构地区：[1]上海长园电子材料有限公司,上海201802

出　　处：《山东化工》2017年第18期147-149,152,共4页Shandong Chemical Industry

摘　　要：采用单螺杆挤出成型的方法制备了表面为鲨鱼皮状的,雾面磨砂的热塑性聚氨酯(TPU)软管。并研究了拉伸比、成型温度、挤出口模平直段长度对形成熔体破裂的影响。并使用显微镜对TPU的外表面进行了观察。研究表明,拉伸比越小、成型温度越低、挤出口模平直段长度越短越容易形成熔体破裂的表面。Matte finish TPU hose,which is of some sharkskin,was prepared with single screw extrusion. The influence of the stretching ratio,the molding temperature andthe landshipof die on the meltfracture behavior of thermoplastic polyurethane elastomerwas investigated. For thermoplastic polyurethane elastomer,surface melt fracture was observed with optical microscope.The research shows that the smaller the drawing ratio,the lower the molding temperature,the shorter the thelandshipofthedie,the easier to form the melt fracture.

关 键 词：熔体破裂 挤出成型 热塑性聚氨酯 雾面磨砂 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]