聚合物发泡泡孔尺寸调控  

Control of Final Bubble Radius in Polymer Foaming

作　　者：马学[1] 蒋涛[1] 

机构地区：[1]湖北大学材料科学学院,湖北武汉430062

出　　处：《塑料工业》2007年第11期37-39,42,共4页China Plastics Industry

基　　金：国家863计划(8637150120160)

摘　　要：采用核壳模型建立了描述聚合物发泡泡孔增长过程的一组控制方程,并采用有限元法而不是通过浓度边界层的积分对控制方程组进行了求解;同时考察若干影响最终泡孔尺寸的因素。计算表明对于一具体发泡过程壳层厚度主要影响最终泡孔尺寸。A set of governing equations is constructed based on the core-shell assumption to describe the bubble growth process in polymer foaming. The governing equations are solved with a finite element method rather than an integral method of concentration boundary layer. Several factors which may affect the final bubble radius are estimated. It is concluded that the shell thickness mainly determines the final bubble radius for a specified foaming process.

关 键 词：聚合物发泡 泡孔增长 黏弹性 

分 类 号：TQ311[化学工程—高聚物工业]