挤出成型塑料管材冷却过程的建模与温度场数值模拟  

Modeling and Numerical Simulation of Temperature Field During Cooling of Extruded Plastics Pipe

作　　者：苏燕[1] 陈利民[1] 王博[1] 

机构地区：[1]四川大学高分子科学与工程学院,四川成都610065

出　　处：《塑料工业》2007年第B06期211-215,共5页China Plastics Industry

基　　金：国家自然科学基金(20304008);四川大学青年科学基金(4320405)资助

摘　　要：基于传热学理沦,对挤出成型塑料管材的冷却过程进行了分析并建立了数学模型。引入聚合物的比热容和热导率对温度的依赖关系,运用有限差分数值方法,求解变物性参数条件下一维非稳态传热方程,模拟了塑料管材在定型冷却过程中的温度场,并由此确定冷却段的合理长度。The cooling process of plastics pipe extrusion was analyzed and modeled based on heat transfer theory. The temperature dependence of specific heat, specific volume and thermal conductivity of polymers were considered. The finite difference method was exploited to numerically simulate the one-dimensional unsteady state temperature field in the extruded plastics pipe during cooling. The length of the spray cooling section was calculated consequently.

关 键 词：挤出成型 塑料管材 传热 有限差分方法 温度场 

分 类 号：TQ320.6[化学工程—合成树脂塑料工业]