In most cases, molecular viscosity is unimportant so that the use of Euler equations is sufficient.
在大多数情况下,分子的粘度是不重要的,因此采用欧拉方程就足够了。
Calculation of Molecular Weights of Polymer is given by a mini-computer according to viscosity method.
本文是由粘度法使用微型电子计算机计算高分子聚合物分子量的方法。
It shows that the solution viscosity drops and the relative molecular mass reduces with narrow distribution.
结果表明改性栲胶溶液黏度下降,相对分子质量降低且分布集中。
The changes of viscosity, hydrocarbon composition and average relative molecular mass of Shengli heavy oil in catalytic upgrading by oil-soluble catalyst XAGD-2 were investigated.
研究了采用油溶性催化剂XAGD - 2催化改质胜利稠油过程中稠油黏度、组成和平均相对分子质量的变化。
Molecular weight of PVC and different grade of ABS affected the viscosity of the blends, too.
同时ABS的种类和PVC相对分子质量的大小也影响共混物的表观粘度。
It was found that when the adding amount of low molecular polyether increased, the viscosity of the prepared polymer polyols increased, and the graft onto polyether was more difficult.
发现随着低分子量聚醚份量增大,所合成的聚合物多元醇粘度增大,聚醚接枝就更加困难。
Viscosity is a general parameter reflecting the molecular weight, molecular weight distribution, and polymer solution concentration of acrylic fiber.
粘度是反映腈纶分子质量、分子质量分布和聚合物浓度的一项综合参数。
The change in blood rheology before and after treatment was compared and it was found that low molecular dextran also had an effect on reducing blood viscosity.
治疗前后血液流变学改变比较,低分子右旋糖酐也有降低血粘度的作用。
With increasing the molecular weight of PTT melt, the extensional strain rate affected significantly the extensional viscosity of melt.
熔体的相对分子质量越高,拉伸速率对熔体的拉伸粘度影响越大。
The DS, intrinsic viscosity and weight-average molecular weight of the products were calculated. The products were characterized with IR and NMR spectroscopy.
测定了产物的取代度、特性黏度、 相对分子质量、 吸湿保湿性,并用IR、 NMR进行结构表征。
When the molecular weight rises, its viscosity will increase greatly, and foaming ability becomes better.
增加分子量可显著提高粘度和起泡能力。
The molecular weight distribution of sulfonated polysulfone, expressed in terms of intrinsic viscosity distribution, has been determined by GPC method.
本文用gpc法测定了磺化聚砜的分子量分布,它是以特性粘数的分布来表示的。
The modified DBP can decrease the association of the molecular in the feedstock to decrease the viscosity thus to improve the rheological behavior.
红外光谱的分析表明改性邻苯二甲酸二丁酯的加入减少了分子间的缔合作用,从而降低了粘度,提高了喂料的流变性能。
The degree of deacetylation of chitosan prepared by the optimum condition is 88.53%, the viscosity average molecular mass is 9048. The experimental result mainly accorded the prospective desire.
最佳制备条件得到的壳聚糖脱乙酰度为88.53%,黏均分子质量为9048。实验结果基本符合预期的要求。
In the paper the influence of block ratio, molecular weight and structure of SIS on the mechanical properties, solution viscosity and melting flowing index of SIS were discussed.
讨论了SIS结构变量如嵌段比、分子量、分子构型的变化对SIS的机械力学性能、溶液粘度与熔融流动性能变化的影响规律。
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。
The aqueous solution properties of poly-dimethyldiallylammonium chloride (PDMDAAC) with different molecular weight(intrinsic viscosity) and narrow distribution were studied in this paper.
本文研究了有系列相对分子质量均聚物PDMDAAC的水溶液性质。
This paper studies the average molecular weight of branched chain of poly ( acrylic acid) by viscosity method. The structure of graft copolymer is also measured by IR method.
利用粘度法测定聚丙烯酸支链的平均分子量,红外光谱法分析接枝共聚物的结构。
Moreover, the low molecular weight and higher temperature are favorable to reduce the melt viscosity, to increase the critical shear rate and to improve the apparent quality of extrudates.
较低的分子量和较高的温度有利于提高临界剪切速率,改善挤出物外观质量和降低熔体粘度。
The viscosity average molecular weighs of several different CPPs were determined by dilute solution viscometry and the intrinsic viscosity was related to the viscosity of industry concentration.
用稀溶液粘度法测定了几种不同氯化聚丙烯粘均分子量,并且将稀溶液测定的特性粘数与一般工业使用浓度的粘度联系起来。
Method: Though enzymatic hydrolysis in vitro, the molecular weight of CMC was measured by the method of viscosity measurement under the effect of lysozyme.
方法:通过体外酶解试验,用粘度测定法研究了在溶菌酶作用下CMC的分子量。
The role of high molecular weight polymers in reducing droplet size is explained in terms of polymer coil overlap which results in a large increase in the viscosity of the solution.
大分子聚合物减少小尺寸液滴数量的作用,可以解释为聚合物分子链卷曲交迭从而使溶液的黏度大幅度增加。
The effects of ionic liquids on viscosity, hydrocarbon composition and average molecular weight of heavy oils are investigated.
研究了离子液体对稠油黏度、组成和平均分子量的影响。
Use viscometry to determine viscosity-average molecular weight of oxidated polyethylene wax and introduce the measurement, process and effect factors in detail.
用粘度法测定氧化聚乙烯蜡的粘均分子量。对测定方法、步骤及影响因素做了详细介绍。
But the viscosity and viscoelasticity of ultra high molecular weight polyacrylamide decrease significantly. The ability of establishing flow resistance of polyacrylamide is limited after shearing.
而超高分子量聚丙烯酰胺经剪切后粘度和粘弹性显著下降,建立流动阻力的能力有限。
The specific rotation, intrinsic viscosity and molecular weight of this polysaccharide were all presented.
本文还报道了该多糖的比旋度、特性粘度和分子量。
The polymer with a viscosity average molecular weight beyond 200 000 was fairly reproducible by optimizing the polymerization conditions.
优化聚合条件可以获得粘均分子量大于200 000的聚丙交酯材料,聚合结果具有良好的重复性。
The result shows the viscosity-average molecular weight of poly(L-lactic acid) attains to 232,000 synthesized by optimizing the reactive conditions.
结果表明:通过优化反应条件,使得在苯溶剂中合成出的聚L-乳酸的粘均分子量可达到232,000。
The result shows the viscosity-average molecular weight of poly(L-lactic acid) attains to 232,000 synthesized by optimizing the reactive conditions.
结果表明:通过优化反应条件,使得在苯溶剂中合成出的聚L-乳酸的粘均分子量可达到232,000。
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