查询词典 surfactants

The influence of each of the mentioned surfactants on the property of foamed phenolics was studied.

研究结果表明：采用DC193与吐温-80复配体系时，泡沫的综合性能最好。

The nanocomposites were exfoliated at 3wt% content of pristine clay relative to the amount of polystyrene. We employed two surfactants for the montmorillonite: cetylpyridinium chloride and the CPC/α-CD inclusion complex. Prior to polymerization, each surfactant intercalates into the layers of the pristine clay dispersed in water.

奈米复合材料在3wt％的黏土含量下达到脱层的结构，我们使用两种插层剂来改质黏土：CPC与CPC套上环糊精错合物，聚合反应前将每种插层剂预先在水中进行插层於黏土层间。

Both surfactants can intercalate into the layers of the pristine clay dispersed in water prior to polymerization. Although the d spacing of the POSS-intercalated clay is relatively smaller than that of the CPC-intercalated clay, PS more easily intercalates and exfoliates the POSS-treated clay than the CPC-treated clay.

插层剂预先插层到分散於水中的黏土后再进行乳化聚合反应，虽然POSS插层后黏土的层间距离较CPC插层后的层间距离小，但聚苯乙烯与POSS互容性较佳，所以易使黏土达到脱层结构，而CPC则反之。

rased on the results of formulation investigation and market product evaluations,the effects of contents of surfactants plus phosphates in LAS-and-STPP-based laundry powders, on the performance/M ratios are reported.

本文从大量的配方研究、市场商品检测及实验研究结果总结了以LAS与STPP为主的洗衣粉配方中表面活性剂和磷酸盐的总含量对去污性能/M的影响。

The effects of different of categories surfactants, the proportion of surfactant and cosurfactant , the chain lengths of alcohol and alkane, temperatures and pH values on the W/O microemulsion phase areas are systematically studied in the dissertation. SEM and laser scatting techniques are used to verify particles'sizes of W/O microemulsion. Consequently, a system TritonX-100/n-C〓H〓OH (weight ratio 1: 1)/C〓H〓/H〓O is obtained which is a stable system with relatively large W/O microemulsion phase area.

本文系统研究了表面活性剂种类、助表面活性剂的链长、表面活性剂和醇的配比、烷烃的链长以及温度、pH值等对W/O微乳液相区域的影响，并用SEM、激光光散射等对微乳液粒度进行了表征，从而获得一种稳定的、W/O微乳液区域较大的体系：壬基苯酚聚氧乙烯醚(TritonX-100)/正戊醇(质量比1：1)/环己烷/水体系。

When secondary building units characteristic of zeolite Beta detected by FT-IR appeared in the reaction mixture in the absence of crystals of zeolite Beta, the pre-treatment was terminated. The aluminosilicate gel with seconding building units characteristic of zeolite Beta was led to ordered-channel hexagonal mesoporous molecular sieve by the interaction between liquid-crystal micelles formed by the self-assembly of surfactants and pre-treated alumiosilicate gel. Therefore, the mesopore wall of SBU mesoporous materials showed the structural character of zeolite Beta.

当反应混合物出现用FT-IR可以检测到的Beta沸石次级结构单元且又没有生成Beta沸石晶体时，即刻终止预处理过程；然后利用表面活性剂超分子自组装形成的液晶胶团与经过预处理的无机物种通过界面作用把含有Beta沸石次级结构单元的无机物种导向为有规整孔道结构的六角中孔分子筛，这种SBU中孔材料的孔壁因而具有Beta沸石的结构特征。

An addition of anionic and nonionic surfactants to the EPC coatings can improve their smearing p...

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The results show that:(1) lower concentration or lower initial pH of citrate solution results in a better desorption efficiency;(2) sparging inert gas or adding surfactants into the liquid can lower the viscosity of the solution and the cavitating threshold, and raise the desorption efficiency of SO2;(3) by comparing the experimental results and theoretical analyses , it was concluded that the experimental results are in accordance with the theoretical analyses.

结果表明：(1)在柠檬酸钠浓度较低，或者柠檬酸钠溶液初始pH值较低的条件下均能产生较好的解吸效果；(2)少量惰性气体的通入或者表面活性剂的加入能够降低溶液黏度，产生空化效应，从而提高了SO2的解吸率；(3)通过对比实验证明解吸结果与理论分析相吻合，其研究结果为SO2的深度解吸提供了技术思路，也为该项技术的工业放大提供了一定的基础数据。

Low molecular weight liquid amide is an excellent solvent, has a long chain fatty acid amide can be used as surfactants.

低分子液态酰胺是优良溶剂，长链脂肪酸酰胺可用作表面活性剂。

For the high affinity sites, binding constant decreases with the decrease of the alkyl chain lengh in the surfactants, but for the low affinity sites, binding constant increases and are not distinct when the alkyl chain is dedocyl. The binding sites are related to the alkyl chain lengh, not for the number of hydrophile groups and temperature.Isothermal titration calorimetry has been used to observe the enzyme-catalyzed hydrolysis reaction of urea.

对于高结合位点，结合常数随疏水碳链长度的减小而减小；对于低结合位点，结合常数随疏水碳链长度的减小而增大，相应的当碳链减小至C12时，低结合位点不明显，结合位点数可能只与碳链长度有关，随亲水头基和温度变化不明显。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。