查询词典 surfactant

Tetragonal phase ZrO2 nano-powders containing 3%Y2O3 was prepared via the coupling route of water-oil emulsion with methyl oxalate homogenous precipitation, in which xylol was used as the oil phase, span-80 as the surfactant, and an aqueous solution containing zirconium as the water phase.

摘 要：采用二甲苯为油相， span-80为表面活性剂， Zr(NO3)4(3Y)的水溶液为水相的W/O 乳浊液和草酸二甲酯均匀沉淀结合法制备四方相ZrO2(3Y)纳米粉。

Tetragonal phase ZrO2 nano-powders containing 3% Y2O3 were prepared via the coupling route of W/O emulsion with urea homogenous precipitation, in which xylol was used as the oil phase, span80 as the surfactant, and an aqueous solution containing zirconium as the water phase.

摘 要：以二甲苯为油相，span80为表面活性剂，Zr(NO3)4(3Y)水溶液为水相的W/O 乳浊液，采用尿素均匀沉淀结合法制备四方相ZrO2(3Y)纳米粉。

Under the optimum conditions, the linear range of the method was 0-80 μg/L. The detection limit was 4.58×10^(-7) g /L.The catalytic reaction was the zeroth order one. The apparent activation energy and the reaction rate constant was found to be 96.04 kJ/mol and 3.61×10^(-3)/s, respectively. The sensitivity was increased by 3 times in the presence of surfactant.

在最佳实验条件下，方法线性范围为0~80μg/L，检出限为4.58×10^(-7)g/L；催化反应为动力学零级反应，表观活化能为96.04kJ/mol，反应速率常数为3.61×10^(-3)/s；反应在表面活性剂存在下，灵敏度提高3倍。

The absorption is in accord with Langmuir isothermal equation, the smaller coal with higher volatile can absorpt more surfactant.

研究发现，在稀溶液范围内，JFC在上煤样的吸附均符合Lang-muir等温方程，且吸附量的大小随挥发分的增加逐渐增大，随粒度的减小而逐渐增大。

Hydroxyapatite acerate nanoparticles with mean size ranging form 20~50nm are synthesized by the impinging stream devise using emulsion systems consisting of aqueous phase, cyclohexane as the oil phase and OP-10, n-octanol as the nonionic surfactant in definite pH value.

在一定pH值条件下，采用水溶液/环己烷/OP-10/正辛醇四元反相微乳液体系并结合撞击流技术制备出粒径为20~50nm的针状纳米羟基磷灰石晶体。

Its hydrophilic groups is the inside carbonyl and amine base, and its lipophilic groups is the inside hydrocarbon chain and outer methyl. PAMAM of integral generation basically has not the surface activity. Its reason is that its outer groups is acylamino groups having very strong hydrophilicity so as not to reduce the surface tension of water. PAMAM different from traditional surfactant, have not critical micelle concentration, and exist in the form of "unimolecule micelle" in water.

结果表明：半代的PAMAM水溶液的表面活性与其分子具有两亲结构有关，亲水基团是内部的羰基和胺基，亲油基团是内部的碳氢链和外层的甲基；整代的PAMAM水溶液基本上没有表面活性，其原因是其最外层基团是酰胺基，亲水性很强，不能降低水的表面张力；树状大分子与传统的表面活性剂不同，不存在临界胶束浓度，在水中是以&单分子胶束&形式存在。

The demulsification mechanism of PAMAM belongs to displacing mechanism. Acylamino groups of PAMAM of integral having strong polarity can take place chemical adsorption with the materials of strong polarity in the exterior of oil drop and be participated in into the membrane, which will result in adsorbed crude surfactant and other active materials to be partially displaced and reduce the intensity of interfacial film between oil and water.

其机理是由于整代的PAMAM具有强极性的酰胺基团，能与油滴表面的强极性的物质发生化学吸咐作用，参与成膜，能把原来吸咐的天然活性剂分子和其它活性物质部分顶替，削弱油水界面膜强度。

The iron sulfide cleaning formulation with the surfactant, allene diamine, citric acid and EDTA as the main ingredients could react rapidly with the iron sulfide to form ethylene and element sulfur in the presence of catalyst.

一种以表面活性剂、丙二烯二胺和柠檬酸、EDTA为主要组分的硫化亚铁清洗配方，在催化剂存在的条件下能迅速与硫化亚铁发生反应，生成乙烯和单质硫。

The effects of flurocarbon surfactant,silane coupling agent, epoxy acrylate prepolymer and alumium silicate fine powder on the water resistant of acrylate structural adhesives were studied.

研究了氟碳表面活性剂、硅烷偶联剂、环氧丙烯酸酯预聚体以及硅酸铝粉末对丙烯酸酯结构胶耐水性的影响，制备出一种耐水性能优异的丙烯酸酯结构胶，其常温拉伸剪切强度为24。

Surfactant is the name given to the lipid secretions that lie in the alveoli.

表面作用剂是指肺泡上的脂质分泌物。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。