查询词典 polymerization

Interface-initiated emulsion polymerization: synthesis of hollow sphere with a hole in the shell.

PH值的增大，AOA与剂量率的降低均不利于纳米微胶囊的形成。2。

The experimental results showed that in the acid condition the polymerization rate decreased in acetic acid media, and the contents of species Sia and Sib were increased.

实验表明：在酸性氛围下，当有乙酸化合物存在时，聚硅酸溶液中的硅酸组分与钼酸反应的速率总是要比不含乙酸时的大得多；溶液中存在的Sia和Sib形态均表现出不同程度的增加。

The results indicate that it is possible to identify and distinguish these siccative oils because the unsaturated acid had changed into azelaic due to oxidation and polymerization during the drying process to make the chromatogram of siccative oils have a typical peak of C9 compound and provide a finger marker of m/z 217, and the concentration ratio of palmitic acid to stearic acid remains constant with time to facilitate the differentiation of oils.

分析时采用了热裂解与甲基化同时进行的技术。分析结果显示，4种干性油的不饱和脂肪酸在成膜后的甲基化产物均为壬二酸二甲酯，离子质量与离子电荷量比值为217，是干性油的特征检测峰。4种油中不同含量的软脂酸和硬脂酸在干性油成膜前后的比值不变，为干性油的甄别提供了可能性。

Secondly,the synthesis of SIPE and the reaction conditions such as catalyst,anti-ether agent,temperature and water are researched to control the generation of diethylene glycol and the self-polymerization of SIPM by controlling the total quantum of distillate and the temperature of distillation column and reaction and the reliable synthetic conditions of SIPE are obtained.

其次，在此基础上，研究了三单体的中间体SIPE的合成工艺，研究了催化剂、抑醚剂、反应温度及水分等对合成反应的影响，同时提出了控制馏出物总量、控制分馏柱温度和控制反应温度等措施来控制二甘醇生成反应和SIPM自聚等副反应，得到了可靠的SIPE合成工艺。

The surface of sisal fiber was modified by alkali treatment and graft-polymerization of methylmethacrylate, respectively.

分别用碱处理和甲基丙烯酸甲酯接枝聚合的方法对SF进行表面改性。

Ni nanoparticles were treated by situ polymerization with Acrylic amide using sodium dodecylbenzenesulfonate as dispersant, and the Fe nanoparticles coated by AM were achieved.

根据活化指数确定了SDBS作为纳米铁粉的分散剂的最佳用量和时间。

Fe nanoparticles were treated by situ polymerization with Acrylic amide using sodium dodecylbenzenesulfonate as dispersant, and the Fe nanoparticles coated by AM were achieved.

采用丙烯酰胺处理纳米铁粉，通过原位聚合方法，以十二烷基苯磺酸钠作为分散剂，在纳米铁粉表面包覆上聚丙烯酰胺。

Currently, the Company has developed a 10 sodium borate to the main raw materials of "instant Boron efficient products - polymerization B", import boutique borax-based raw materials,"Shi-based products for Boron - strong boron and boron lot" and "Good buy" series of fertilizer, product selection of raw materials, scientific formula to meet the nutritional needs of crops.

目前，本公司已开发出以十硼酸钠为主原料的"高效速溶硼肥产品——聚合硼"、进口精品硼砂为主原料的"基施专用硼肥产品——强力硼、硼多多"及"好再买"系列微肥，产品精选原料，科学配方，能够满足作物的营养需求。

The polymerization of sodium silicate and gel condensation of silicon dioxide are accelerated by using the firming agent.

用固化剂促进水玻璃的聚合和二氧化硅凝胶的缩合，拼用苯丙乳液作为辅助成膜物质。

The polymerization characteristics have been examined in detail for the oxazoline-substituted N-phenylmaleimides with initiators including n-BuLi, Et_2Zn, Et_2Zn/-Sparteine, and Et_2Zn/n-BuLi.

发现：在n-BuLi引发下获得的光学活性聚合物最高比旋光度达到-60.0°~(25D，数均分子量为2×10~3～6×10~3；聚合物的比旋光度随着分子量的增大而线性增加，poly出现了旋光方向翻转现象，临界分子量为M_n=2700。

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！