查询词典 polymerization

The progress in the research and application of non-metallocene catalysts for olefin living polymerization has been reviewed in recent years.

阐述了近些年来非茂金属烯烃活性聚合催化剂的研究进展及其应用。

The catalytic features of olefin polymerization were studied under different conditions.

用所合成的茂金属化合物与MAO所组成的催化体系对乙烯、丙烯的聚合进行了研究。

FI catalyst as a high performance catalyst is developed for olefin polymerization in recent years.

FI催化剂系一近几年发展起来的烯烃聚合高性能催化剂。

The atomic net charge, population of frontier molecular orbital, stability and reactive properties of free radicals were analyzed, the mechanism of graft polymerization was discussed.

同时采用量子化学abinitio UHF方法在6-31G基组水平上对两类淀粉链段自由基模型进行几何优化，分析体系的净电荷、前线分子轨道分布规律，以及自由基的稳定性和反应活性特征，揭示接枝共聚反应机理。

For the first time ,AgBr organosol was obtained by using oleic acid to extract and modify the AgBr nanoparticles in hydrosol. And the optimum molar ratio of oleic acid to AgBr nanoparticles was found. AgBr nanoparticles, modified by oleic acid were mixed with MMA. After polymerization was carried out, the polymeric photochromic material was synthesized.

首次采用油酸萃取并包覆了水溶胶中的AgBr纳米粒子，制备了AgBr有机溶胶；并找到了萃取率最佳时的油酸与AgBr的摩尔比；再将油酸包覆的AgBr掺杂到甲基丙烯酸甲酯中，进行本体聚合，从而制备了AgBr光致变色有机玻璃。

The different compositions of the copolymer scale inhibition are designed by uniform design and orthogonal design, and a series of amphiprotic tercopolymer scale inhibition were synthesised by radical polymerization.

经试验测定，该产品在具有较高的阻垢效果的同时，还具有一定的杀菌效果，基本实现了一剂多效。

The preparation,amount of promoters used in synthesis of paraformaldehyde with low polymerization degree were studied.

考察了制备低聚合度多聚甲醛的适宜助剂、加入质量分数和效果，并研究了反应时间、反应温度和热空气线速度对制备的PF中醛质量分数和醛收率的影响规律。

Addition of small amount of inert solution, such as, pentane and isooctane, to the bulk polymerization system is helpful to remove the reaction heat.

向本体聚合体系中加入少量溶剂如戊烷、异辛烷有助于改善这一问题，使反应平稳地进行。

Formed from beads obtained by the suspension polymerization of styrene containing a low boiling point liquid, often about 5% pentane.

由含一种低沸点液体（常用约5%的戊烷）的苯乙烯通过悬浮聚合所得珠粒料制成。

According to the analysis and research on the feature of petrology and diagenesis, and combining the research of reservoir physical property, the distribution of diagenetic facies belt in Zhenjing block is effectively predicted with the method of "three charts polymerization".

通过对储层岩石学特征和成岩作用的分析，并结合储层物性的研究成果，采用"多图叠合"的方法有效地预测了研究区成岩相带的展布。

The objective is to subjugate and discourage the people, because that allows the elite to continue to rule unopposed.

其目的是压制和打击人民的积极性，因为这可以让实权派继续统治不会沦为反对派。

GOD,this is the second time you vanquished me!

天啊，这是第二次你打败了我！