A high efficient complex viscosity reduction system XGD was developed for the crude oil in superheavy oil reservoir with high resin and asphaltene content and complicated layer structure. 针对特超稠油油藏原油胶质、沥青质含量高,层状结构复杂的特点,研制了高效复合降粘体系XGD并对其性能进行了评价。
Experimental Investigation of Complex Eddy Viscosity Modeling in Turbulent Boundary Layer with Periodic Blow/ Suction Disturbance 加入周期吹吸扰动的平板湍流边界层复涡黏模型实验研究
Experimental Investigation of Complex Eddy Viscosity Modeling in Wall Turbulence by Disturbance of Cylinder Wake Flow 壁湍流引入圆柱尾流扰动的复涡黏模型实验研究
The complex viscosity decreased with the increase of shear rate in the form of approximate power law function. 动态复合粘度则随着剪切速率的增加而呈近似幂律函数形式减小。
The complex viscosity increased greatly with the increase of the SEBS-g-MAH content at low shear rate. 当在低剪切速率下,动态复合粘度随着SEBS-g-MAH含量的增加而显著增大。
PI-1 oligomers show low complex melt viscosity ( < 1Pa · s) at 280 ℃ and are stable at this temperature, which mean PI-1 oligomers can be processed by resin transfer molding techniques. PI-1低聚物在280℃时表现出低的熔体粘度(<1Pa.s)和良好的熔体粘度稳定性,可用于RTM成型工艺制备树脂基复合材料;
The complex viscosity of the blend melts decreases with the increasing shear rate, which exhibits pseudoplastic behavior. 共混物熔体的复黏度随剪切速率的增大而降低,符合假塑性流体流动规律;
The effects of PTFE content on water-absorptivity, notched impact strength and complex viscosity of PTFE/ PA6 and PTFE/ PA66 blends were investigated by water immersion test, Charpy impact fracture test and dynamic rheology measurement in this paper. 通过浸水实验、缺口冲击断裂实验和动态流变测试,考察了PTFE含量对PTFE/PA6和PTFE/PA66共混物的吸水率、冲击断裂强度及熔体黏度的影响以及熔体黏度随温度和频率的变化规律。
Dynamic rheological results indicate that mPE melt, which extruded in the presence of 200W ultrasonic oscillations, has lower dynamic cross modulus, longer characteristic time, higher complex viscosity and zero shear viscosity. 利用高压毛细管流变仪和动态流变仪研究了经超声作用mPE挤出物的流变行为。超声挤出会导致mPE动态交叉点模量升高,特征松弛时间增加,复数粘度和零剪切粘度有所增加。
When the shear oscillatory frequency rises, the complex viscosity decreases, and shear-thinning phenomenon is significant. 随着剪切振荡频率的增加,复合粘度下降,振荡剪切-稀化现象显著。
Interaction characteristics between different CWM additives and coals(ⅱ) effect of interaction of complex coal particle on CWM apparent viscosity 不同水煤浆添加剂与煤之间的相互作用规律(Ⅱ)复合煤颗粒间的相互作用对CWM表观黏度的影响
But the soybean fiber-pectin complex is instable though its viscosity and surface tension are apparently increased. 大豆纤维素与果胶复合物的上述指标也有提高,但体系不稳定。
The Numerical Simulations of Complex Viscosity Flowfield under Large Angle 大迎角粘性复杂流场的数值模拟
After an induced period the complex viscosity rises as an exponential function of time, which is the characteristics of first-order reactions. 复数粘度在一个诱导期后,是以指数上升的,类似一个一级反应的特征。
As to the temperature dependence of complex viscosity of the blend melts, an interesting phenomenon was observed. The complex viscosity decreases with increasing temperature for PTFE/ PA6 melts, while it increases with temperature in a manner of power law for PTFE/ PA66 melts. 有趣的是,对于PTFE/PA6共混物的黏度随着温度的升高而减小,而PTFE/PA66共混物黏度随着温度升高近似成指数规律增大。
Development of heat-sensitive viscosity reducers Evaluation of Complex Viscosity Reducers for Crude Oil 超稠原油热敏性降粘剂的研制稠油降粘剂复配降粘效果评价
Influence of Complex on the Properties of High Viscosity Nylon 6 络合对高黏度尼龙6性能的影响
The complex additive will increase coal concentration and decrease viscosity whereas the CWS constitution becomes loose. 复合添加剂可使煤浆具有高煤浓度、低粘度、煤浆结构疏松、稳定性好易触变的性质。
This complex influence upon the melt viscosity was considered to be result of the competition between antiflocculating fillers and strengthening filler/ matrix interface both by the plasma treatment, This was verified by examining the morphology of the capillary extrudates. 扫描电镜观察熔体形态证实,处理对熔体粘度的复杂影响,是处理改善填料在熔体中的分散性和提高填料与基体界面结合力两者综合作用的结果。
At the phase inversion point, the viscosity of the system at low stress increases slightly and the dynamic rheological parameters ( storage modulus, loss modulus and complex viscosity) reach their minimum values. 相反转点时,体系粘度增加幅度很小,体系的有关动态流变参数(剪切储能模量、损耗模量和复数粘度)均出现极小值,将此归于局部连续水相的润滑作用;
Most China's oilfield are nonmarine heterogeneous with complex geological structure and high oil viscosity, which determined the uneven of waterflooding and complication of residual oil distribution. 鉴于中国陆上油田绝大多数为陆相储层,构造复杂,非均质严重,原油粘度偏高,石油地质特点决定了水驱油的不均匀性及剩余油分布的复杂性,潜力就存在于这种复杂之中。
The complex viscosity decreases with increasing frequency, showing a typical shear thinning behavior. HGB/TPU熔体属于假塑性流体,复数粘度随着频率的增大而减小,呈现典型的切力变稀行为。
In this work, the melt strength and viscoelasticity of four types of PET was analyzed through characterization of shear rheology and extensional rheology of PETs, including the dynamic complex viscosity, storage and loss modulus, relaxation spectrum, and extensional viscosity. 本文采用流变学方法从剪切流变和拉伸流变两方面,通过对剪切粘度、储能模量和损耗模量、松弛时间谱和拉伸粘度的表征,对四种具有不同分子结构PET的熔体强度进行分析。
Experimental investigations on complex eddy viscosity modeling in turbulent boundary layer by disturbance of cylinder wake flow were carried out. 本文对风洞中平板湍流边界层近壁区引入圆柱尾流扰动的复涡黏模型进行了实验研究。
The results of dynamic rheological experiment indicate that the complex viscosity of spinning solution decreases in presence of AT, and the intersection of storage modulus and loss modulus moves to high frequency, which is in favor of improving the quality of fibers. 同时动态流变实验显示复数粘度随着AT的加入逐渐变小,并且储能模量和损耗模量的交点向高频移动,有利于提高纺丝质量。
With the increase content of HGB content, the complex viscosity, storage modulus and loss modulus of HGB/ TPU system were gradually increased, and the loss tangent was gradually reduced. 随着HGB含量的增大,HGB/TPU体系的复数粘度、储能模量和损耗模量逐渐增大,而损耗角正切则逐渐减小,这说明复合体系的弹性提高。
The DMA and rheology test indicated that the elastic modulus, loss modulus and the complex viscosity of PLA/ GMS/ ACR blends have the increasing trend with the increasing content of ACR. 由流变实验测试表明,PLA/GMS/ACR共混物的弹性模量、损耗模量、及复合黏度均随着ACR的含量的增加而增大。
The complex viscosity, storage modulus and loss modulus of copolymer were systematically studied by rotary rheometer. 通过旋转流变仪对聚合物的复合粘度、储能模量以及耗损模量进行了比较系统的研究。
Complex viscosity and viscoelastic moduli also get increased. 共混体系的复数粘度、粘弹性模量也得到大幅度提高。
The calculations are: ① The complex viscosity of the lamellar and hexagonal liquid crystals gradually decrease, follow a shear-thinning behavior. 结果表明,①层状和六角状液晶相的复合粘度都随角频率的增加而线性降低,反映出剪切稀释行为。