聚丙烯发泡体系的挤出胀大和泡孔平均直径预测模型  

Model for Predicting Extrudate Swell and Cell Average Diameter in Foamed Polypropylene

作　　者：王喜顺[1] 梁碧珊[1] 

机构地区：[1]华南理工大学工业装备与控制工程学院塑料橡胶装备及智能化研究中心,广东广州510640

出　　处：《中国塑料》2006年第2期65-68,共4页China Plastics

摘　　要：利用改进后的毛细管流变仪研究了温度、发泡剂与碳酸钙含量对聚丙烯发泡体系挤出胀大和泡孔直径的影响。综合胀大比与毛细管数的关系,提出了聚丙烯发泡体系挤出胀大和泡孔平均直径的预测模型。与实验结果相比,发泡体系挤出胀大的预测值与实验测量结果的误差在5％左右,气泡平均直径的预测值与实验测量值的误差在 10％左右,表明所提出的预测模型能正确预测实验值。The influences of temperature, content of foaming agent and CaCO3 on the extrudate swell, and average cell diameter of polypropylene foam are investigated using improved capillary rheometer. A model for predicting extrudate swell and average cell diameter of polypropylene foam is proposed based on the relationship between the extrudate swell and capillary number. Comparing the model predictions with experimental data, the error is about 5 % for the extrudate swell, and about 10 % for the average cell diameter.

关 键 词：聚丙烯发泡体系 碳酸钙 挤出胀大 泡孔直径 毛细管数 预测模型 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]