表面活性剂的

The preparation process includes the following steps: dissolving activator and RE oxide in the molar ratio of 0.01-0.02 in concentrated nitric acid and heating to dry, dissolving the obtain RE nitrate in deionized water to obtain solution of RE nitrate; dissolving soluble tungstate and surfactant in deionized water to obtain tungstate solution; mixing the RE nitrate solution and the tungstate solution through stirring to reaction for 25-60 min to obtain white precipitate; hydrothermal reaction of the precipitate in a reaction kettle at 100-260 deg.c for 24-72 hr; centrifugally separating, washing and drying to obtain the product.

浓硝酸的加入量保证稀土氧化物溶解就可以，过量的硝酸可以加热除去；将可溶性钨酸盐和表面活性剂溶解于去离子水中，得到钨酸盐溶液，表面活剂性的加入量为反应原料重量的0-30wt％；将稀土硝酸盐溶液加入到钨酸盐溶液中搅拌，发生沉淀反应，磁力搅拌时间为25-60分钟，得到白色沉淀；将含有沉淀物的溶液作为前驱物加入到反应釜中，发生水热反应，反应温度为100-260℃，反应时间为24～72小时；离心分离，洗涤，干燥，即得所需产物。

The coconut oil propyl amine oxide is one kind of new oxidized amines amphoteric surface active agent, it has good becomes spongy, dewaters, the recuperation and the anti-static electricity function, can obviously enhance the product synthesis lavation ability, under the general amount used, is extremely temperate to the skin and the hair, like took when cosmetic, may entrust with the skin smooth comfort, also can cause by the common raw material configuration shampoo to produce the dense milk greasy froth, is suitable in the configuration shampoo, the bath medicinal preparation, washes the face lavation things and so on milk and baby detergent, tableware detergent and hard-faced detergent.

椰油丙基氧化胺是一种新型的氧化胺类两性表面活性剂，它具有良好的发泡、增稠、调理和抗静电作用，能显著提高产品的综合洗涤能力，在一般用量下，对皮肤和头发非常温和，如作为润肤剂时，可赋予皮肤光滑舒适感，也能使以一般原料配制的香波产生稠密的奶油状泡沫，适用于配制香波、浴剂、洗面奶和婴儿洗涤剂、餐具洗涤剂和硬表面洗涤剂等洗涤用品。

In order to improve their water solubility, 4"-fatty amido-3"-sodium carboxylate azobenzene-4-sodium sulfonates were synthesized. They are azo compounds with two hydrophilic groups of carboxyl and sulfonyl. They decrease the surface tension in dilute solution slowly, and show some surfactivity, but are not surfactants. The probable reason is their relative strong hydrophile. Furthermore, their colors are not fresh and far from our destination.

为了改善其水溶性，改用对氨基苯甲酸为原料合成了4′-脂肪酰氨基-3′-羧酸钠偶氮苯-4-磺酸钠盐，以偶氮结构为主的亲水基团上连有羧酸基和磺酸基两个亲水性较强的基团，但可能由于其亲水性太强，在稀溶液中只能缓慢地降低溶液的表面张力，具有一定的表面活性，但不是表面活性剂，而且颜色不鲜艳，距离我们的目标较远。

According to Hydrophile and Lipophile Balance, the suitable surfactants have been selected and put into lubricating oil with single nanometer particles or two kinds of nano-materials, The tribology tests were carried out in four-ball tribotester.

介绍了纳米材料的制备，根据亲水亲油平衡值选择了合适的表面活性剂，并将其加入到含有单种或两种复合纳米粒子的润滑油中进行表面改性，采用四球摩擦磨损试验机测定含纳米粒子的润滑油的摩擦学性能。

A isotherm of a monolayer at air-water interface for a quaternary ammonium salt type trimeric surfactant (shortly called 12-2-12-2-12) was investigated by the Langmuir balance technology. The surface tension at collapse pressure,γ, and the molecular limited area, A, were determined and compared with the surface tension of the surfactant solution at CMC concentration,γ.

利用Langmuir膜天平研究了季铵盐三聚表面活性剂12-2-12-2-12在空气－水界面单分子膜的表面压－分子面积等温线，得到它的崩溃压对应的表面张力γ(下标 collapse)和分子极限面积A。

Using trimeric surfactant C_(14-2-14-2-14) as templating agent, the low cost and facile inorganic species sodium aluminate and sodium silicate as inorganic precursors, highly ordered 2D hexagonal aluminosilicate MCM-41 with high Al content were successfully synthesized.

利用廉价易得的硅酸钠和偏铝酸钠作为无机前驱体，以低聚季铵盐表面活性剂C_(14-2-14-2-14)为模板剂合成了高铝含量，高有序性的二维六方结构介孔硅铝酸盐材料，并对材料的结构、表面性质、形貌以及酸性进行了研究。

Functions: Uses 3D technique to converge surfactants, the amino acid has good relation to the skin. It is gentleness and without stimulation. The cleanser appeases and calms skin, cleans skin. Using it you will fell loose, clean and moistening. Gently cleanses, removes sebum and the dirt of metabolism. Makes the acid and alkali balance. Appeases and calms allergy skin. Builds a protective film to defeat pollution in the air and increases skin's resistance after using it.

主要功能：本品采用高科技技术，有效将氨基酸及各种表面活性剂聚合，具有很好的亲肤性，温和无刺激；温和清洁肌肤，无紧绷感、清爽、滋润，温和清除皮肤多余油脂及代谢污垢；平衡肌肤酸碱度，安抚镇静敏感及脆弱皮肤；用后在肌肤表面形成一层天然的保护膜，增加皮肤抵抗力，帮助肌肤抵御大气中的各种污染，免受侵害。

In SDS-CaCl_2 system, the adsorption of Ca~(2+) ions on micellar surface can not result in the charge neutralization and there is no hydroxide group bridging effect in this system, so the surfaetant can not be flocculated in form of micelles.

在SDS-CaCl_2体系中，Ca~(2+)的吸附作用并未导致胶束表面电荷的中和，也不存在羟基架桥的作用，故该体系中的表面活性剂不能以胶束形式沉淀。

In addition,this fluid can prolong the service lives of cutting tools and grinding wheel,enhance their working efficiency,and decrease the surface roughness of the workpiece as well, instead of the traditional saponified oil and emulsion.

它是由防锈剂、抗磨剂、防腐剂和多种表面活性剂复配而成，具有优良的冷却润滑和清洗防锈能力，能延长刀具和砂轮的使用寿命，提高工件表面光洁度和工作效率，可代替传统的皂化油和乳化液。

M is, the higher the strength will be, as well as more even particle distribution. The mechanism of additives as discussed revealed that on the surface of Al_3 particles the oleophilic group of surface active agent will form oil films to bind together fine Al_3 particles closely so as to increase both the particle size and strength.

结果表明，氢氧化铝颗粒在 45～105μm的个数百分数越大，氢氧化铝颗粒分布越均匀，强度就越好；探讨了添加剂的作用机理，即表面活性剂分子的亲油基在氢氧化铝粒子表面形成油层，将氢氧化铝细粒子紧密粘结在一起，使氢氧化铝的粒度与强度增大。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。