讨论了聚合物分子量及淬冷温度对成膜孔结构的影响。
The effects of polymer molecular weight and quenching temperature on the porous structure are also discussed.
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。
Calculation of Molecular Weights of Polymer is given by a mini-computer according to viscosity method.
探讨了反应温度、单体浓度、链转移剂、引发剂等因素对聚合物分子量的影响。
The influence on molecular weight of PAM of amount of solvent, initiation and chain-transfer agent has been studied.
探讨了反应温度、单体浓度、链转移剂、引发剂等因素对聚合物分子量的影响。
The influence on molecular weight of PAM of reaction -temperature, reaction time, concentration of monomer, amount of initiation and chain-transfer agent has been studied.
本发明具有制得的聚合物分子量高、分子量分布窄，聚合方法绿色环保的优点。
The polymer molecular weight is high, the molecular weight distribution is narrow, and the polymerization method is green and environmental-protection.
用GPC法测定了各聚合物分子量，用1 HNMR法表征了各聚合物化学结构。
Molecular weight and chemical structure of each polymer have been characterized by gel permeation chromatography (GPC) and 1h-nmr, respectively.
结果表明，单体加入速度、聚合温度及引发剂用量是决定聚合物分子量的主要因素。
It has showed that the feeding speed of mixed monomers, temperature for polymerization and the dosage of initiator are main factors controlling the molecular weight.
在目前国内通用的聚丙烯酰胺干粉制备工艺中，聚合物分子量的降低率达50%以上。
At present, the molecular weight of polymer reduces by over 50% in the preparation of general purposed PAM powder in China.
结果表明，利用真空干燥箱，在适宜的反应条件下反应，有利于最终聚合物分子量的控制。
The results show that it was favourable to control molecular weight of the resulting polymer by using the vacuum drying oven under appropriate reaction conditions.
聚合物分子量和溶液浓度参数设计，是决定聚合物驱油能否成功的关键，尤其是分子量和溶液浓度。
Polymer molecular weight and solution concentration parameter design are the key to decide whether the polymer flooding is successful or not.
研究表明，聚合物分子量降低，水解度升高或者两者同时变化，沉降体积均减小，但是仍有很高的保留率。
The study results show that the subsidence volume has been a decrease along with the molecular weight dropping, the degree of hydrolysis rising or both varying, but it still has high reservation rate.
研究了高分子聚合物作为絮凝剂的使用特性以及高分子聚合物分子量、电荷密度、投加量的关系及对絮凝过程的影响。
The author has studied the operation of polymer as the flocculating agent, its molecular weight, charge density and inventory of polymer and its effects on the process of flocculation.
在较低的微波功率下适当延长辐照时间，聚合物分子量仍然维持在较高的水平，同时可使聚合物产率和单体转化率有所提高。
The resulting polymer's molar mass was still very high and polymer yield and monomer conversion increased a little when prolonging irradiation time to a degree at low power.
探讨了引发剂类型与聚合温度的匹配，考察了分子量调节剂、溶剂用量、单位滴加时间等因素对聚合物分子量及其分布的影响。
Temperature, type of initiators, molecular regulator, addition time of monomers were investigated in terms of monomer conversion, molecular weight and its distribution.
研究了聚合物分子量、交联剂N-乙烯基吡咯烷酮与引发剂过氧化苯甲酰的含量对最高交联温度、固化时间、压缩强度及压缩模量的影响。
The effect of UPPE molecular weight, NVP/UPPE ratio, BPO/UPPE ratio on the crosslinking temperature, setting time, compressive strength and compressive modulus was investigated.
和它们的低分子量的类似物一样，微量的酸或碱常能促进聚合物的水解。
Hydrolysis of polymers, as with their low-molecular weight analogs, is often catalyzed by traces of acids or bases.
一类固体或半固体的天然的或合成的有机材料，一般为无清晰熔点的高分子量材料，多数树脂为聚合物。
Any type of solid or semi solid organic material of natural or synthetic origin, generally of high molecular weight with no defined melting point. Most resins are polymers.
聚合物的分子量随着催化活性的降低而升高。
The molecular weight of the polymers obtained increased with decrease in catalytic activity.
实验结果表明，使用复合引发体系可以提高反应的转化率和聚合物的分子量。
The results showed that conversion and molecular weight of polymer were increased with the use of the initiation system.
在第二阶段，为了确保得到高分子量聚合物，需要足够的反应时间。
In the second stage, to ensure a high molecular weight polymer, enough reaction time is necessary.
从聚合物结构与性能关系入手，设计合成了高分子量的不同氨丙基含量的含氨丙基聚硅氧烷。
Starting from the relation between structure and properties of polymer, high molecular polysiloxanes containing of different content of aminopropyl groups were designed and synthesized.
脉孢壳属的渗透突变体能透过分子量为18500的聚合物。
An osmotic mutant of Neurospora was permeable to polymers of molecular weight 18500.
通过化学反应把小分子联合成大分子量的聚合物。
Chemical reaction in which smaller molecules combine to form a high molecular weight polymer.
高分子量(即5000以上)的天然或合成聚合物。
A natural or synthetic polymer of high molecular weight (i. e., 5000 or more).
介绍了低聚合度、窄分子量分布的聚合物分散剂的控制方法。
The controlling methods of polymeric dispersant with low polymerization degree and narrow molecular weight distribution were introduced.
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。
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.
聚合物的分子量主要与系统中的氢浓度有关。
The molecular weight of the polymer was mainly affected by the concentration of hydrogen in the polymerization system.
采用自由基水溶液聚合方法合成了超高分子量的丙烯酸(钠)聚合物。
By the method of free-radical polymerization in solution, cross-linked copolymer of sodium acrylate and acrylic acid of super-high molecular weight.
在缩合聚合中，单体的纯度会影响到官能团的摩尔比，从而使聚合物的分子量偏离设定值。
In condensation polymerization, the monomer will affect the purity of the molar ratio of functional groups, so that the molecular weight deviates from the set value.
且在同样的实验条件下，用不同的溶剂获得的聚合物的分子量不同。
Under the same experimental conditions, the polymers with different molecular weights were obtained by using different solvents.
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