PS/SCCO_2发泡体系挤出胀大和泡孔平均直径预测模型  

Prediction Model for Extrusion Swell and Cell Average Diameter of PS/SCCO_2 Foaming System

作　　者：蔡业彬[1] 卫红梅[2] 

机构地区：[1]茂名学院,广东茂名525000 [2]太原理工大学,山西太原030024

出　　处：《塑料科技》2007年第12期38-42,共5页Plastics Science and Technology

基　　金：广东省自然科学基金(04011554;06029274);广东省科技计划项目(2003C103015;2005B10301044)

摘　　要：运用正交试验和统计相结合的方法,研究了温度、压力、剪切速率、发泡剂含量对聚苯乙烯/超临界CO2发泡体系挤出胀大和泡孔的影响;综合胀大比和毛细管数的关系,提出了聚苯乙烯/超临界CO2发泡体系挤出胀大和泡孔平均直径预测模型。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,泡孔平均直径的预测值与实验测量值的误差在10%左右。The influence of temperature, pressure, shear rate and content of foaming agent on the extrusion swell and average cell diameter of PS/SCCO2 foam were investigated by using orthogonal experiment and statistical software; Colligate the relationship between swell rate and capillary number to establish the prediction model of the swell ratio and the average cell diameter for PS/SCCO2 foaming system. To compare with the experimental results, the error of the predited value is about 5% for the extrusion swell, and about 10% for the average cell diameter.

关 键 词：聚苯乙烯/超临界CO2发泡体系 挤出胀大 泡孔直径 预测模型 

分 类 号：TQ320[化学工程—合成树脂塑料工业]