查询词典 emulsion

The purpose of this study is to develop a high-performance emulsion Nitrocellulose brightener, while maintaining the advantages of solvent-based and improve the stability of emulsion.

本研究的目的是研制一种高性能的乳液型硝化纤维光亮剂，在保持溶剂型优势的同时提高乳液型的稳定性。

In this paper, research is focused on the two aspects, the study on the liquid-liquid mass transfer of butanone and dichloromethane in emulsion liquid membrane, and the study on the liquid-liquid equilibria of butanone and dichloromethane in emulsion liquid membrane.

本文是针对丁酮与二氯甲烷在乳化液膜体系中油—水相间的液液传质以及液液平衡进行实验研究。

Functional properties of silk fibroin were measured. The results showed that its emulsion capacity and emulsion stability were good at wide pH range from 3 to 10.Sodium chloride decreased EC and ES to some extent. EC and ES improved as the concentration of silk fibroin increased, until reaching its critical micelle concentration 0.5%. Foam capacity of fibroin was lower than that of caseinate, while its foam stability was markedly better than that of caseinate.

对丝素的功能性质进行了研究，结果表明，丝素在pH3～10范围内具有较好的乳化能力和优良的乳化稳定性；氯化钠的添加使丝素乳化能力和乳化稳定性略微下降；随着丝素浓度增加，丝素乳化能力和乳化稳定性均提高，当丝素浓度高于丝素临界胶束浓度0.5％时，乳化能力增幅变缓。

This research's goal is develops one kind of high performance the emulsion cellulose nitrate lustre-coating agent, while maintains the resolver superiority enhances the emulsion stability.

本研究的目的是研制一种高性能的乳液型硝化纤维光亮剂，在保持溶剂型优势的同时提高乳液型的稳定性。

Because the traditional resolver cellulose nitrate lustre-coating agent it does not bear the aging, the resistance to cold to be bad, shortcomings and so on hygienic performance difference receive the impact, but emulsion cellulose nitrate lustre-coating agent, although the comparison environmental protection and the hygienic performance are high, but because became the membrane glossiness to be bad and the emulsion long-term laying aside does not stabilize has limited its application.

传统的溶剂型硝化纤维光亮剂因其不耐老化、耐寒性差、卫生性能差等缺点而收到冲击，而乳液型硝化纤维光亮剂虽然比较环保且卫生性能较高，但因成膜光泽性较差和乳液长期放置不稳定而限制了其应用。

The advantage of supercritical carbon dioxide used as an environmental medium in polymerization and reactions in supercritical carbon dioxide are described. It includes homogeneous free radical polymerizations, precipitation free radical polymerizations, dispersion free radical polymerizations, emulsion and inverse emulsion free radical polymerizations, cationic polymerizations, ring-opening polymerization, melt-phase condensation polymerizations, sol-gel polymerizations, polymer blend synthesis, catalytic chain transfer polymerizations, oxidative coupling polymerization, nitroxide-mediated radical dispersion, atom-transfer radical polymerization, reversible addition-fragmentation chain transfer polymerization, electrochemical polymerization, simultaneous one-pot combination of enzymatic and chemical polymerization, copolymerization of carbon dioxide used as monomer.

评述了ScCO2作为聚合反应介质的优点，以及在ScCO2中可进行的聚合反应类型，包括均相聚合、沉淀聚合、分散聚合、乳液及反相乳液聚合、阳离子聚合、开环聚合、熔融态缩聚、溶液-凝胶聚合、聚合物混合合成、链催化转移聚合、氧化-偶合反应聚合、氮氧自由基可控活性聚合、原子转移自由基聚合、可逆加成-断裂链转移、电化学聚合、原子转移聚合与酶催化开环聚合两种活性聚合在ScCO2中同时聚合、二氧化碳作为原料共聚合等。

In this paper, three kinds of hydroxyl component are prepared for two-component waterborne polyurethane paint, that is, acrylic dispersion, acrylic emulsion and silicone-modified acrylic emulsion. The influence of the composites of these dispersion and emulsions on polymerization process, viscosity, particle size and coagulum are investigated, infrared spectroscopy , inductance coupling plasma , transmission electron microscopy and thermogravimetric analysis are used to characterized their structure, composite, morphology and thermal stability, respectively.

本论文制备了三种用于水性双组分聚氨酯涂料的含羟基组分，即丙烯酸分散体、丙烯酸乳液和有机硅改性丙烯酸乳液，研究了这些分散体和乳液在制备过程中聚合物的羟值、酸值、玻璃化温度、乳化剂、反应温度等对聚合转化率、凝聚物含量、聚合物粘度和粒径的影响，用红外光谱、热重分析、透射电镜和感应偶合等离子技术表征了其结构、组成、形态和热稳定性。

Transmission Electron Microscope and other properties testing results show that the complex emulsifier system is the crucial influence factor of the polymerization process and the properties of products. It may influence the coagulum content and reaction rate of the polymerization process, the performance, particle diameter,viscosity, electrolyte stability and storage stability of the emulsion products and the contact angle of the film.The initiator mainly influences the coagulum content and reaction rate.The acrylic monomers mainly influence the solid content, Minimum Film Formation Temperature of the emulsion and the Glass Transition Temperature of the film.The organic silicone monomer mainly influences the water absorption of the film.The reaction temperature mainly influences the reaction rate and conversion.The stirring intensity mainly influences the coagulum content of the polymerization process.

透射电镜等性能测试结果显示：复合乳化剂体系是硅丙共聚乳液的聚合过程及产品性能的主要影响因素，它可以对聚合过程的凝胶率、反应速率以及乳液的外观、粒径、粘度、耐电解质稳定性及贮存稳定性，还有乳液涂膜的接触角等造成不同程度的影响；引发剂主要影响反应速率和凝胶率；丙烯酸酯单体主要影响到乳液的固含量、最低成膜温度以及涂膜的玻璃化转变温度，有机硅单体主要影响涂膜的吸水率等；聚合反应温度主要影响乳液的反应速率和转化率等；搅拌强度主要是影响到聚合过程的凝胶率。

The results show nano-scale emulsion, stable polymerization and good performances if the SLS is mixed with OP at mole ratio of 2 to 1; the amount of compound emulsifier is 4% and the solid content of emulsion is 40%.

结果表明，当乳化剂为SLS/OP复合乳化体系、其物质的量的比为2∶1、乳化剂用量为4%、乳液固体含量为40%时，可以得到纳米尺度的苯丙乳液，聚合反应稳定性和乳液性能良好。

When Ri increases, the effort in the molecular will increase, and molecular in the emulsion will crimple in group, the distribution of molecular weight in emulsion will widen and distribution degree increase.

利用预聚体封端接枝技术合成了具有优异贮存稳定性和耐水性的丙烯酸酯改性聚氨酯水分散体与丙烯酸酯-有机硅氧烷复合改性聚氨酯水分散体。

We are forbidden from giving money to these shoeless, skinny children, as this will perpetuate begging.

向光着脚，骨瘦如柴的孩子施舍是不可以的，因为要招来无休无止的乞讨。

It would be hard not to fall victim to some sharpeyed policeman.

要想不被某个目光锐利的警察抓到，谈何容易。