A model for predicting extrudateswell and average cell diameter of polypropylene foam is proposed based on the relationship between the extrudateswell and capillary number.
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。
2
The extrudateswell behaviour and the factors affecting it during short die extrusion of linear low density polyethylene (LLDPE) melt have been investigated by using a rheometer.
应用毛细管流变仪，考察了线性低密度聚乙烯(LLDPE)熔体于短口型挤出中的胀大现象及其影响因素。
3
The influences of temperature, content of foaming agent and CaCO3 on the extrudateswell, and average cell diameter of polypropylene foam are investigated using improved capillary rheometer.