聚合温度

考察了n（Al）∶n（Ti）、聚合温度、聚合时间及溶剂种类对复合催化剂的活性及定向催化能力的影响。

Effects of mole ratio of Al to Ti , polymerization temperature , time and solvent type on catalyst activity and catalytic stereospecificity were studied .

PE的相对分子质量随聚合温度的下降有明显增大，在0-60℃时重均分子量为（16-60）×104。

The relative molecular mass of the PE resin remarkably went up as the polymerization temperature lowered , e.g. its weight average molecular weight attained ( 16-60 )× 104 in the temperature range from 0 to 60 ℃ .

透射电镜表明，乳胶粒径随单体DM含量增加而增大，随聚合温度升高，粒径增大。

Latex average particle diameter increased with increasing concentration of DM and temperature .

MMA、St及MMA/St聚合温度和极限转化率的关系

The Relationship of limiting Conversion to temperature of homopolymerization and copolymerization for MMA , St and MMA / St

研究发现，共聚酯的熔融峰随着固相聚合温度和时间的变化而与纯PET有明显的差别；

The experimental results show that the changes of melt peaks of copolyesters with changing of S. S. P.temperature and time are different from PET homopolymer .

考察了不同引发体系、聚合温度、引发剂浓度、pH值、乳化剂浓度对聚合物固含量（S）及相对分子质量（MR）的影响。

The effects of initiator , polymerizing temperature , pH , concentration of surfactant and concentration of initiator on the solid content and relative molecular weight ( MR ) of polyacrylamide have been investigated .

1HNMR分析表明，丙二腈在反应中起催化剂作用，通过削弱碳氮键可以提高转化速度，还可明显降低聚合温度。

Analysis of 1H NMR showed that MN only acted a catalyst to enhance the polymerization rate and reduce clearly the temperature by weakening the bond of C-O.

用GPC仪测定了不同聚合温度时的BR的分子量及其分布。

The molecular weight and molecular weight distribution of polybutadiene rubber ( BR ) produced at different polymerization temperatures were determined by GPC method .

在特定溶剂S中，讨论了活性C9馏分与顺丁烯二酸酐摩尔比、共聚合温度（T）和引发剂用量（I）对共聚物分子量的影响，确定了反应体系的最佳聚合条件。

The effects of reaction conditions such as molar ratio of reactive C9 fraction and maleic anhydride , copolymerization temperature and initiator concentration on molecular weight of copolymer have been examined . The optimum conditions for copolymerization system are presented .

探讨了单体的组成、PVA、乳化剂的种类及用量、引发剂用量、聚合温度等因素对胶粘剂性能的影响。

The influence of monomers composition , PVA , the type and amount of emulsifier and initiator , polymerized temperature on the properties of the adhesive was discussed .

KPS浓度和聚合温度增加使VC-IBVE-HEMA乳液共聚速率增加。

With the increase of temperature and initiator concentration , the polymerization rate of VC-IBVE-HEMA increased .

当聚合温度为80℃、SDBS质量分数为1%、硫酸质量分数为3%时，可以制得稳定的聚硅氧烷乳液。

Stable polysiloxane emulsion were obtained with the polymerization temperature of 80 ℃, catalyst concentration of 1 % and emulsifier concentration of 3 % .

考察了聚合温度、乳化剂用量、引发剂用量和PSG用量对细乳液聚合转化率的影响。

The effects of reaction temperature , mass of surfactant , mass of initiator and mass of PSG on the polymerization conversion were investigated .

研究了使用DMC催化剂制备环氧丙烷聚醚时，聚合温度、催化剂浓度、加料速度对聚醚相对分子质量和相对分子质量分布的影响规律。

The effects of temperature , concentration of catalyst and feeding rates of monomer on molecular weight and molecular weight distribution in polymerization of propylene oxide with DMC catalyst were discussed .

一种新型枝化聚乙二醇的合成实验结果表明，以庚烷作溶剂时，该催化剂具有较高的催化活性，聚合温度和n（Al）：n（Ni）对催化活性和聚合物的性质有较大的影响。

Branched polyethylene was obtained . The supported diimine Ni complex showed high activities for the polymerization . Reaction conditions , namely n ( Al ) : n ( Ni ) and temperature , had significant effects on catalytic activity and properties of obtained polyethylene .

结果表明，共聚树脂的分子质量与聚合温度的关系符合Arrhenius方程，其综合活化能为-32.877kJ/mol；

The results show that the relation between the molecular weight of the copolymer resins and polymerization temperature conforms to Arrhenius equation with activity energy -32.877 kJ / mol ;

针对提高聚合温度，降低聚合度，同时使PVC孔隙率降低的矛盾，本文根据PVC树脂的成粒机理，进行了疏松少皮低聚合度PVC树脂的合成配方设计。

Aiming at decreasing polymerization degree as well as increasing porosity and basing on the well-known particle formation mechanism of vinyl chloride suspension polymerization , synthesis recipe of PVC resin with low polymerization degree , high porosity and less skin was designed .

研究了氯丁二烯转化率、相对分子质量调节剂用量、残留氯丁二烯含量、接枝聚合温度、MMA用量等对接枝共聚物溶解性和接枝率的影响。

The effects of chloroprene conversion , relative molecular mass adjuster concentration , residual chloroprene content , graft polymerization temperature , and CR / MMA ratio on graft percent and the copolymer properties were investigated .

聚合温度及坯体干燥温度应控制在65oC以下；

The temperature of polymerization and body drying should be below 65oC ;

发现提高搅拌转速使相转变提前，升高聚合温度、增加引发剂用量、提高PMI及橡胶含量都使转相期延迟。

It was found that the higher the polymerization temperature and concentrations of PB , initiator and PMI , the earlier the phase inversion occurred , but with raised agitation rate in a later phase inversion .

过氧化二苯甲酰为引发剂，α羟基乙基二茂铁为添加物可明显地降低聚合温度和缩短聚合时间，实现MMA在室温下聚合。

When BPO was selected as an initiator and α hydroxyl ethyl ferrocene as an additive , the time and temperature of polymerization obviously declined , and the polymerization of MMA could be realized in the room temperature .

本文工作表明：支持向量神经网络作为一种高精度建模工具，不仅可以成功应用于解决如ABS树脂聚合温度建模等复杂工业过程的建模问题，还可以为复杂工业过程的控制提供有力的工具。

This paper 's work shows that support vector neural network can not only be used in solving the modeling problem such as temperature control of the ABS resin polymerization process successfully , but also provide a powerful tool in the complicated industry process control .

以1H-NMR为检测端基结构的主要手段，考察了共引发剂种类、引发剂用量及聚合温度等聚合因素对活性中心向聚合物内部转移异构化的影响，结合理论知识，对实验结果进行了合理的解释。

The influence of different factors such as the type of coinitiator , dosage of initiator , polymerization temperature on the active centre transfer casing isomerization were studied . The above experimental results can be explained by the theory knowledge .

当聚合温度为0℃时（PTh0），聚合物呈片层状堆积，形成微观网络形貌。

When the polymerization temperature is0 ℃( PTh0 ), PTh is layer-packed , forming the microscopic network morphology .

研究了分散剂浓度、HLB值、油/水质量比、中和度、聚合温度和时间对聚合体系稳定性、产物形态及产率的影响。

The factors of dispersant concentration , HLB value , oil / water mass ratio , neutral degree , polymerization temperature and time what impact the polymerization system stability , polymerization modality and its production rate are researched .

本文用Fourier变换红外光谱仪研究了N-乙烯基吡咯烷酮-甲基丙烯酸β羟乙酯（VP-HEMA）体系在不同聚合温度，不同交联剂用量和不同引发剂用量下的共聚反应动力学规律。

In this work , Fourier transform infrared spectroscopy was used to study the copoly-merization kinetics of N-vinyl pyrrolidone-2 - hydroxyethyl methacrylate ( VP-HEMA ) at different temperature and different concentrations of cross-linking agent and initiator .

结果表明：聚合温度75-76℃，聚合结束后pH值控制在7-8，聚合过程中补加助乳化剂戊醇和引发剂KPS溶液，能有效抑制凝胶和相分离现象。

The results show that the gel and phase separation phenomenon could be restrained effectively when polymerization temperature was 75-76 ℃ and pH value was controlled ranging between 7 and 8 after polymerization finished at the same time aid emulsifying agent pentanol and initiator KPS solution were added during polymerization .

结果表明：聚合温度60～65℃、硅烷偶联剂708的用量为D4单体质量的2%～5%、采用阳/非离子型乳化剂时，合成的微乳液稳定性好；

The results showed that adopting cation / non-ion emulsifier , the emulsion owns excellent stabilization when the polymerization temperature are 60 ~ 65 ℃, the content of silane coupling agent 708 is 2 % ~ 5 % of octamethylcyclotetrasiloxane .

结果表明，本实验条件下合成聚乳酸的最佳工艺条件为：选择氯化亚锡为催化剂，用量0.5wt%，在聚合温度120℃、常压下反应20h。

The result demonstrated the best technics condition of synthesizing PLA . Under the standard pressure , 0.5wt % of SnCl_2 was used as catalyst . Polycondensation temperature was controlled at 120 ℃ and the reaction time was 20h .

应用红外光谱、凝胶色谱和旋转粘度计等测试手段，研究了聚合温度、原料（HT和D4）配比以及催化剂除去方式等工艺条件对聚合反应和聚合产物分子量的影响。

The effects of polymerization temperature , ratio of HT to D4 and the manner of elimination catalyst on the structure and relative molecular weight of products were investigated by infrared ray ( IR ) , gel permeation chromatography ( GPC ) and rotation viscometer ( RV ) .