剪切流场中微孔发泡的气泡成核理论研究现状  

Research Status Quo of Theory for Cell Nucleation of Microcellular Foam in Shear Flow Field

作　　者：蔡业彬[1] 国明成[2] 彭玉成[1] 谢存禧[1] 

机构地区：[1]华南理工大学 [2]北京化工大学,北京100029

出　　处：《中国塑料》2004年第2期5-11,共7页China Plastics

基　　金：国家自然科学基金重点基金 (1963 2 0 0 4) (10 172 0 74/A0 2 0 2 0 5 );广东省科技计划项目 (2 0 0 3C10 3 0 15 )

摘　　要：分析了经典成核理论对于动态聚合物熔体中气泡成核的局限性 ;概括了剪切流场中气泡成核的研究进展 ,并对剪切流场中泡核拉伸模型、空穴成核模型进行了详细的分析和讨论 ,指出了其对气泡成核过程解释的不足 ;介绍了最新的气泡成核中的剪切能成核理论 ,该理论较完善地解释了剪切流场中气泡成核过程 ;最后指出了气泡成核研究的发展方向。Disadvantages of classical theory of cell nucleation in motion polymer melt were analyzed. The research development of cell nucleation in shear flow field was introduced, and the disadvantages of cell stretch model and cavity nucleation model in shear flow field to explain cell nucleation were analyzed and discussed in detail. The lastest shear energy nucleation theory during cell nucleation was recommended, which explained the process of cell nucleation in shear flow field perfectly. Finally, the development trend of cell nucleation was pointed out.

关 键 词：剪切流场 气泡成核 自由能 剪切能 成核理论 

分 类 号：TQ328[化学工程—合成树脂塑料工业]