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- The viscous flow activation energy of modified coal tar pitches markedly increases with rise of TS content,and pre-exponential factor A decreases. 随温度的升高或剪切速率的增加，改性媒沥青的粘度降低：随TS含量增加，改性煤沥青的流动活化能厂变小、指前因子A变大； 煤沥青在改性过程中可通过工艺的调整来控制煤沥青的粘度，以满足不同的使用要求。
- Keywords Biodegradable Copolyester;Rheological Behavior;Non-Newtonian Index;Viscous Flow Activation Energy; 生物降解共聚酯;流变性能;非牛顿指数;黏流活化能;
- Keywords rylonitrile;vinyl acetate;copolymer;dimethylacetamide;rheological behavior;viscous flow activation energy;apparent viscosity; 丙烯腈;乙酸乙烯酯;共聚物;二甲基乙酰胺;流变性能;粘流活化能;表观粘度;
- viscous flow activation energy 黏流活化能
- The flow behavior of antistatic IPP melt is better than that of IPP melt andthe flow activation energy of the former is also lower than that of the latter. 抗静电的等规聚丙烯熔体的流动特性比等规聚丙烯好,其粘流活化能也比等规聚丙烯低;
- The influences of shear rates on flow activation energy was investigated.Activation energy of PP,LDPE and LLDPE resins were higher than HDPE at the same shear rate. 结果发现,相同剪切速率下,PP、LDPE、LLDPE的粘流活化能相对较高,HDPE树脂的粘流活化能相对较低,说明PP、LDPE和LLDPE对温度的敏感性较高,即升温有利于LDPE和LLDPE的加工;
- The die pressure, apparent viscosity, flow activation energy of mPE and its blends reduce greatly, productivity increases in the presence of ultrasonic oscillations during extrusion. 超声频率的增加,功率越大,熔体表观粘度越低,平均作用时间越长,熔体表观粘度降低的程度也越大。 施加250W超声挤出可使mPE加工温度降低18℃、口模压力降低45%25、挤出产量增加1倍,而表观粘度则会降低近50%25。
- It is discovered that there are compensation relations for flowing activation energy and freq... 果汁的流动活化能与频率因子间存在着补偿关系。
- The flow active energy and viscosity of PPS was reduced and its rheology was modified appreciably by blending it with a small amount of thermotripic liquid crystalline polymers. 在聚苯硫醚中加入少量的热致液晶聚合物可降低其流动活化能和表观粘度,显著改善聚苯硫醚的流变性能。
- Keywords LIR;dynamic rheological behavior;flow activation energy; 液体聚异戊二烯;动态流变行为;流动活化能;
- Flow of gas or liquid due to a pressure difference is called viscous flow. 由于压力差引起的气体或液体流称为滞流。
- The parameters of Andre's equation were modified and a new method used to estimate the viscosity of LGP at low temperature was developed by way of the combination of the activation enthalpies of viscous flow with those of glass transition. 并与玻璃化转变的活化焓结合起来，对由普通方法得到的安德烈方程的几个参数进行修正，从而发展了一种改进的预测液体发射药低温粘度的方法。
- It was found that the viscous activation energy of PC/PBT blends became higher than that of PC and the fluidity of the blends were improved. 研究发现:PBT的加入,可使共混体系的粘流活化能增大,流动性增加;
- The viscous flow between the wing-tip and the wall is simulated by solving the RANS equations of incompressible fluid. 本文通过求解不可压缩流体RANS方程,对机翼翼端与固壁之间隙流动进行了数值模拟。
- The magnetohydrodynamic viscous flow due to a shrinking sheet in the presence of suction is concerned with. 摘要研究有抽吸作用的可收缩薄片上的磁流体动力学粘性流动。
- The gas permeation mechanism through carbon membrane is involved in Knudsen diffusion and viscous flow. 气体透过炭膜的扩散以努森扩散为主，并伴有粘性流。
- Keywords engine lubricant,environment friendliness,Biodegradable,low-temperature property,base oil,viscosity index improver,flow activation energy,jellification theory; 内燃机润滑油;环境兼容;可生物降解;低温性能;基础油;粘度指数改进剂;流动活化能;成胶理论;
- Viscous flow with chemical non-equilibrium effects is numerically simulated on unstructured hybrid grid. 在非结构混合网格上对化学非平衡粘性绕流进行了数值模拟。
- The stream function-vorticity method has been used to simulate two -dimensional transient state of incompressible viscous flow. 摘要采用流函数-涡量法对粘性不可压缩流体的二维瞬态流动进行模拟计算。
- The numerical solution of incompressible viscous flow over an aerofoil is obtained by H-type grids and a special difference scheme. 本文用H型网格和特殊的差分格式数值求解了粘性不可压缩叶型绕流。
