研究了复合材料的挤出胀大现象。
主要介绍了黏弹流体挤出胀大的数值模拟研究进展。
深入讨论了聚合物熔体在不同长径比、不同角度圆锥口模的挤出胀大现象及机理。
Discussed thoroughly the extrusion swell phenomenon and mechanism of polymer melts in conical die with different entrance angles and different ratios of length to diameter.
深入讨论了聚合物熔体在不同长径比、不同角度圆锥口模的挤出胀大现象及机理。
This paper discusses thoroughly the extrusion swell phenomenon and mechanism of polymer melts in conical die with different entrance angles and different ratio of length to diameter.
对硬聚氯乙烯塑料熔体挤出胀大现象作了专项测定，讨论了产生挤出胀大现象的原因。
This paper gives a special measurement of RPVC plastic melt and discusses the reasons causing the phenomenon of extruding expansion.
本文首次成功地将压力不连续的非协调单元和罚函数法用于挤出胀大流动的有限元计算。
The problems of creeping flow of Newtonian fluid extruded from a plane slit or a circular pipe are simulated using several kinds of finite element method.
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。
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.
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。
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.
研究了聚碳矽烷（PCS）熔体在Y型喷丝孔中的挤出胀大机理、膨胀模型以及膨胀比对Y型碳化矽纤维异形度的影响。
The die-swell mechanism of polycarbasilane(PCS) melt for a spinneret with Y-shaped orifice and the effect of die swelling of PCS on the profile degree (PD) of Y-shaped SiC were investigated.
对有关挤出胀大、减粘降阻、熔体破裂及壁面滑移的研究进展进行了综述，指出气辅挤出技术是解决以上问题的有效方法。
The research advances about die swell, the reduction of friction between die wall and polymer melt, wall slip and melt fracture in polymer extrusion are described in the paper.
结果表明，圆锥短口模挤出过程中，熔体在收敛流道受到拉伸流变，导致强烈的入口弹性效应，表现为熔体在短口模挤出时显著的挤出胀大。
The result shows that the extensional flowing of the melt occurs in convergent die resulting in intense entrance elastic effect and distinct extrusion swell.
结果表明，圆锥短口模挤出过程中，熔体在收敛流道受到拉伸流变，导致强烈的入口弹性效应，表现为熔体在短口模挤出时显著的挤出胀大。
The results show that the extensional flow of melt in convergent die results in intense entrance elastic effect and distinct extrusion swell in conical die with different angles.
适当增加流道的长度，可以减小胶料出口处的速度场、剪切速率场的集中程度并使之趋于均匀，能够有效降低挤出胀大和模外熔体偏转流动现象。
The velocity field and shear rate distribution are reduced and uniform along with the proper increase of slip length. The die swell and the interface deflexion phenomenon will be reduced effectively.
结果表明，不同角度圆锥口模挤出过程中，熔体在收敛流道受到拉伸流变，导致强烈的入口弹性效应，表现出熔体在不同角度圆锥口模挤出时有不同的挤出胀大比。
The results show that the extensional flow of melt in convergent die results in intense entrance elastic effect and distinct extrusion swell in conical die with different angles.
讨论了聚合物熔体经短口型挤出时的胀大现象及机理。
In this paper, the extrusion swell phenomena and mechanism for polymer melts from short dies are discussed.
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。
The extrudate swell 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。
The extrudate swell behaviour and the factors affecting it during short die extrusion of linear low density polyethylene (LLDPE) melt have been investigated by using a rheometer.
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