振动注射成型中模腔冷却过程的研究  

Research on the Cooling Stage of the Cavity in Oscillation Injection Molding

作　　者：王喜顺[1] 彭玉成[1] 

机构地区：[1]华南理工大学工业装备与控制工程系,广州510641

出　　处：《中国塑料》1999年第8期75-82,共8页China Plastics

基　　金：国家自然科学基金!(编号 :1 9632 0 0 4 )的资助

摘　　要：研究了振动注射成型中模腔内聚合物熔体产生的振动剪切热 ,并研究在振动作用下模腔内物料的冷却过程。结果表明 ,模腔内熔体的温升速率随着振动频率、应变振幅及振动剪切速率的增加而增加 ,随熔体温度的增加而减少。由于振动剪切热 ,使振动注射成型需要更长的冷却时间。The oscillation shear heat generated by polymer melt and cooling stage of polymer in the cavity during the oscillating injection molding are researched. The results show that the rate of melt temperature increases goes up with the increase of oscillation frequency, deformation amplitude and oscillation shear rate, and decreases with the increase of melt temperature. Longer cooling time is needed for the cooling stage in the oscillation injection molding because of the shear heat generated by oscillation.

关 键 词：剪切热 熔体温升 冷却 振动注射成型 高聚物 

分 类 号：TQ320.52[化学工程—合成树脂塑料工业] TQ320.662