the viscosity dropped with the increase of temperature and shearing rate and decreased drastically over critical shearing rate, but remained almost unchanged at lower shearing rates.
onsite test shows that the shearing rate applied by pipe string was less than 15% and its qualification is 100%.
现场试验表明,这种管柱对聚合物的剪切率小于15 % ,层段合格率达到10 0 %。
using the shearing rate of work on then surfaces of velocity discontinuity and the tensional rate of work are taken into account when computing the total functional.
总泛函中考虑了张力功率和速度不连续面上的剪切功率;
the effects of shearing rate and molecular weight of pam and the concentration of pam solution on kinematic viscosity were discussed.
探讨了剪切速率对动力粘度的影响,以及聚丙烯酰胺分子量和溶液浓度对动力粘度的影响。
higher spinning temperatures and lower shearing rate caused pp to form disperse phase at higher composition ratio.
选择较高的加工温度及较低的剪切速率,可以使共混物pp在高组成比时成为分散相。
the reliability of the apparent melt viscosity on the temperature was reduced while the shearing rate was higher.
高剪切速率时,表观粘度对温度的依赖性降低。
the barus effects reached the minimum at lower shearing rate within 120-140℃.
在120—140℃低切变速率下操作,胶料的弹性记忆效应最小。
the higher the shearing rate is, the finer and more homogeneous the spherical grains are.