工艺参数对聚合物气辅共挤成型的影响  

EFFECT OF TECHNOLOGICAL CONDITIONS ON POLYMER GAS-ASSISTED COEXTRUSION

作　　者：肖兵[1] 尹智龙[2] 

机构地区：[1]江西南昌工程学院机械与动力工程学院,南昌330099 [2]江西蓝天学院机械工程系,南昌330029

出　　处：《工程塑料应用》2011年第2期47-50,共4页Engineering Plastics Application

摘　　要：利用流体力学有限元分析软件对二维气辅共挤出过程进行数值模拟,研究各工艺参数对聚合物气辅共挤成型的影响。结果表明,速度场的峰值和压力峰值会随着流量的增加而增加;气辅共挤时熔体流动稳定,呈柱塞状挤出;气辅共挤可以有效提高挤出速率,防止制品表面的"鲨鱼皮"现象。Gas-assisted co-extrusion molding（GACEM） process was numerical simulated by the FEM numerical analysis software, and the effects of the process parameters on the die swell were investigated. The simulation results showed that the peaks of the velocity field and the press increased as the flow ratio of two polymers inereased respectively. The gas-assisted coextrusion could raise the extrusion efficiency and prevent the sharkskin phenomenon effectively.

关 键 词：聚合物 气辅共挤成型 CFD 数值模拟 

分 类 号：TQ320.663[化学工程—合成树脂塑料工业]