水辅助共注射成型充填过程的数值模拟研究  

Numerical Simulation on Water-assisted Co-injection Molding Filling Process

作　　者：匡唐清[1] 邓洋[1] 

机构地区：[1]华东交通大学机电工程学院,江西南昌330013

出　　处：《中国塑料》2013年第1期105-110,共6页China Plastics

基　　金：国家自然科学基金项目(51103037);江西省自然科学基金项目(2010GQC0029)

摘　　要：基于黏度幂率模型,建立了水辅共注成型充填流动过程的瞬态、纯黏性、非等温的理论模型,并采用有限体积法对水辅共注成型过程进行数值模拟。研究了内外层注射量、内外层熔体流变指数比、注水温度、注水速度、注水延迟时间、内层熔体温度和模壁温度等因素对充填过程的影响规律,并根据流变学理论阐述了其影响机理。Based on the power law model,a transient, pure viscous, non-isothermal model for water- assisted co-injection molding was developed, and finite volume method was adopted to simulate the filling stage of water-assisted co-injection molding process. The influence of inner-outer injection volume, inner-outer rheological index ratio, water injection temperature, water injection velocity, water injection delay time, inner melt temperature, and mold temperature on the fluids filling patterns of water-assisted co-injection molding was investigated. The simulation results were explained based on rheological theory.

关 键 词：水辅助共注射成型 充填过程 数值模拟 

分 类 号：TQ320.662[化学工程—合成树脂塑料工业]