Theoretical Analysis on Polymer Melt Extrusion Swell at Conical Die with Different Entrance Angles;
不同角度圆锥口模对聚合物熔体挤出胀大的影响
Effect of the vibration force field on the polymer extrusion swell;
振动力场对聚合物挤出胀大的影响
The extrusion swell behavior of a tube compound was studied by means of a Monsanto capillary rheometer under the conditions with temperature varied from 100 to 130 ℃ and flow rate varied from 1.
00 mm/min的条件下,考察了内胎胶料的挤出胀大行为。
Study of Die Swell of Gas-assisted Extrusion of Polymer;
聚合物气辅挤出的挤出胀大研究
Experimental Research and Forecasted System Development of Die Swell Ratio of Polymer;
聚合物挤出胀大的实验研究及预测系统开发
The rheological properties and die swell of modified PVA were studied in this paper.
研究了改性PVA体系的流变性能及挤出胀大行为。
Study on Swell Ratio Model of PP Foam;
运用正交实验的方法和数学回归的方法,对实验数据进行分析,得到了聚丙烯发泡体系剪切速率与切应力的关系,以及胀大比与毛细管数的关系表达式。
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.
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 effects of wall slip on co-extrusion flow field, interface shape and extrudate swell were discussed.
在两侧壁面滑移系数相同和两侧壁面滑移系数不同这两种情形下分别计算了共挤出流动的速度场、压力场、黏度场及剪切速率场 ,讨论了壁面滑移对共挤出流场、界面形状和挤出胀大的影响 。
The developments of investigations on extrudate swell by using numerical simulation methods are reviewed in this paper.
主要介绍了黏弹流体挤出胀大的数值模拟研究进展。
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.
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,在理论计算上和实验过程证明,长径比较小的口模挤出胀大比远大于长径比较大口模的挤出胀大比,说明口模入口角处形成的收敛流场产生流动方向上的速度梯度,熔体受到拉伸形变产生较强烈的弹性效应,引证了收敛口模熔体流动以拉伸变形为主的事实,而且进一步说明聚合物熔体在口模的挤出胀大主要受到入口收敛流动产生的弹性回复的影响,表现出熔体在短口模挤出时显著的挤出胀大。