1) die swell ratio
挤出胀大比
1.
he flow of a power-law fluid flowing through an enlarged conical channel wasstudied, thus regressive relationships between die swell ratio B and normal stress difference N were obtained.
从连续方程和运动方程出发，对一种幂律流体流过扩张型圆锥流道时的流动进行了分析计算，得到了挤出胀大比Ｂ与法向应力差Ｎ之间的回归关系。
2.
Based on the data acquired by the experiment, prediction software of polymer die swell ratio was developed by the means of the hybrid programming which availed of Mat- lab language and VB language.
在通过试验获得大量样本数据的基础上,利用Matlab语言与VB语言混合编程,将人工神经网络技术移植于应用软件系统,开发了聚合物挤出胀大比预测软件。
3.
Based on the data acquired by the experiment,prediction software of polymer die swell ratio was developed by mixing programming technique with Matlab language and VB language.
在通过实验获得大量样本数据的基础上,利用Matlab语言与VB语言混合编程,开发了聚合物挤出胀大比预测软件。
2) die swell
挤出胀大比
1.
The results showed that the shear viscosity and non-Newton exponent of the composite decreased gradually,the die swell and the pressure loss at the entrance of zero die increased,and the appearance of extrudate deterioated as the shear rate increased;the sensitivity of the shear viscosity of composite to the shear rate decreased,the non-Newton exponent increased,in general,the die swell .
结果表明,随着剪切速率的增大,复合材料的剪切粘度和非牛顿指数逐渐减小,挤出胀大比和零口型入口压力降增大,挤出物外观变差;随着纳米碳酸钙用量的增大,复合材料的剪切粘度对剪切速率的敏感性下降,非牛顿指数增大,挤出胀大比总体上呈下降趋势,零口型入口压力降变化较小,在相对低的剪切速率下,挤出物外观得到改善。
2.
In this paper shear elastic behaviours of linear polyethylene melt were quantitively and qualitively charactenized by rheological parameters such as elastic shear complince Je, recoverable elastic strain SR,melt die swell and so on.
利用稳态剪切柔量、可回复剪切应变以及熔体挤出胀大比等参数,定量计算和定性表征了4种线型聚乙烯熔体的剪切弹性行为,研究了各表征参数之间及其与分子量、分子量分布等分子参数的关系,讨论了剪切弹性行为对加工性能的影响。
3) die swell ratio
挤出物胀大比率
4) extrusion swell
挤出胀大
1.
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
2.
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
3.
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。
5) die swell
挤出胀大
1.
Study of Die Swell of Gas-assisted Extrusion of Polymer;
聚合物气辅挤出的挤出胀大研究
2.
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
3.
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。
6) extrudate swell
挤出胀大
1.
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。
2.
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 。
3.
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。
补充资料：挤出胀大效应
分子式：
CAS号：
性质：聚合物流体(熔体或浓溶液)在黏性流动中的一种弹性效应。在聚合物挤出成型中，出现挤出胀大效应(也称Barus效应)，出现这种效应的主要原因是弹性流入效应，即聚合物流体在流道中流动时，由于受到剪切应力作用，高分子链沿流动方向伸展、取向，除产生不可逆的永久形变外，还不可避免地要产生高弹变形；由于流道不长，伸展的高分子链来不及完全回复，而在挤出模具口后，继续弹性回复，导致流体的出口膨胀。
CAS号：
性质：聚合物流体(熔体或浓溶液)在黏性流动中的一种弹性效应。在聚合物挤出成型中，出现挤出胀大效应(也称Barus效应)，出现这种效应的主要原因是弹性流入效应，即聚合物流体在流道中流动时，由于受到剪切应力作用，高分子链沿流动方向伸展、取向，除产生不可逆的永久形变外，还不可避免地要产生高弹变形；由于流道不长，伸展的高分子链来不及完全回复，而在挤出模具口后，继续弹性回复，导致流体的出口膨胀。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条