硅氧烷

The anionic polymerization of octamethylcyclotetrasiloxane (D4) catalyzed by tetramethyl ammonium hydroxide in the presence of water under conditions of high temperature and oxygen-off was investigated.

以八甲基环四硅氧烷为单体，四甲基氢氧化铵为催化剂，微量水为链封端剂，进行有水条件下环硅氧烷阴离子开环聚合。

In this paper, a series of polysiloxanes crosslinked by tetraethyl orthosilicate, polyurethanes crosslinked by trimethanol propane, and polyurethane/polysiloxane IPNs were synthesized at the existence of catalyst at room temperature.

本论文室温催化合成了聚硅氧烷、聚氨酯阻尼弹性体、以及一系列不同结构和组成比例的聚氨酯/聚硅氧烷IPN体系，分析了聚硅氧烷、聚氨酯和IPN的力学性能和动态力学性能。

Ingredients: Water,Stearyl Trimethyl Ammonium Chloride,Cetearyl Alcohol,Cetyl Alcohol,Amodimethicone,Rosa Rugosa Flower Extract,Cyclomethicone,Dimethicone,Hydroxyethyl Cellulose,Hydrolyzed Keratin,Hydrolyzed Wheat Protein,Parfum,Methyl Paraben,Propyl Paraben,Methylchloroisothiazolinone Methylisothiazolinone,Citric Acid.

成分：去离子水，十八烷基三甲基氯化铵，鲸蜡硬脂醇，鲸蜡醇，氨二甲基硅氧烷，玫瑰花提取液，环甲基硅氧烷，聚二甲基硅氧烷，羟乙基纤维素，水解角蛋白，水解小麦蛋白，香精，对羟基苯甲酸甲酯，对羟基苯甲酸丙酯，凯松，柠檬酸。

This product was prepared w ith octamethyl-cyclotetrasiloxane and tetramethyltetravinylcyclote-trasiloxane as monomers,a low visco sity hydroxyl -terminated silicone oil as an end -bl ocking agent and tetramethylammonium hydroxide as catalyst.

以八甲基环四硅氧烷为单体，四甲基四乙烯基环四硅氧烷为改性单体，羟基硅油为封端剂和相对分子质量调节剂，四甲基氢氧化铵为催化剂，在羟基硅油质量分数小于0.13%，催化剂质量分数为0.004%～0.007%时，采用共聚法制备了相对分子质量大于45×104，收率大于90%的端羟基聚二甲基硅氧烷。

The process of the preparation of the kind of emulsion mainly includes two important parts.The first part is emulsion polymerization of polysiloxane , that is , octamethylcyclotetrasiloxane polymerizes into polysiloxane emulsion by means of ring-expansion under emulsion and acid conditions.

制备过程主要包括两部分的内容：第一部分内容是聚硅氧烷乳液的合成，即八甲基环四硅氧烷在乳液状态中，酸性条件下开环聚合制成聚硅氧烷乳液。

The first part is emulsion polymerization of polysiloxane , thatis , octamethylcyclotetrasiloxane polymerizes into polysiloxaneemulsion by means of ring-expansion under emulsion and acidconditions.

制备过程主要包括两部分的内容：第一部分内容是聚硅氧烷乳液的合成，即八甲基环四硅氧烷在乳液状态中，酸性条件下开环聚合制成聚硅氧烷乳液。

Adding a small quantity of three functional group of polyvalent can improve the water resistance and decoration of copolymer emulsion after film forming. The structure form of interpenetrating networks has a greater destroy degree to the micro crystal of polyurethane film forming substance than the effect of the prepolymer capping graft copolymer.IV, This article studies on the heat stability of acrylate modified polyurethane dispersion, researches the changes of the structure of acrylate modified polyurethane dispersion afterheating, and analyses by the heat analysis, infrared ray and heat analysis, and mass spectrometery.

利用拉曼光谱和扫描电镜、红外光谱等测试技术，分析了丙烯酸酷及丙烯酸酷一有机硅等改性聚氨酷水分散体的成膜过程—利用预聚体封端技术合成的丙烯酸酷改性聚醚聚氨酷的成膜过程包括乳液颗粒的挤压成膜与分子硬段的微区结晶，有机硅氧烷的引入将同时出现硅氧烷的水解缩合；具有互穿网络结构的丙烯酸酷改性聚氨酷水分散体因丙烯酸酷的互穿而限制了聚氨酷硬段在成膜过程中的结晶，聚合物成膜以挤压成膜为主，有机硅的复合改性同样出现硅氧烷水解缩合现象。8。

The contact angletoward water of the epoxy resin modified by the polysiloxane ionomers HQAS-PDMS was related with the surface energy of the substrate, ion group content and thelevel of the ionomers.

用硅氧烷离聚体HQAS-PDMS改性的环氧树脂固化物对水的接触角与成型基质的表面能、硅氧烷离聚体的离子基团含量、硅氧烷离聚体的加入量有关。

The compatibility depended onthe structure and content of the ion group in the polysiloxane ionomer, as well as thelevel of the ionomers. The surface composition of the cured epoxy resin modified by the polysiloxaneionomers HQAS-PDMS was analyzed by XPS. The results indicated the remarkableenrichment of polysiloxane chains on the surface of the cured epoxy resin.

用X-射线光电子能谱分析了硅氧烷离聚体HQAS-PDMS改性的环氧树脂固化物表面的化学组成，结果表明聚硅氧烷在环氧树脂固化物的表面发生明显富集且成梯度分布，其富集程度决定于硅氧烷离聚体与环氧树脂的相容性及成型基质表面能的高低。

The emulsion quartz stone material protective agent's solute has certain active multi-compositions and so on of functionality siloxanes and fluorine silicon hydride, this kind groups with the active ingredient carry alcoholysis reaction the ion condition water on quartz stone material surface, thus causes the siloxanes and the fluorine siloxanes has chemistry keying connection with the quartz stone surface, from outside to inside of the quartz stone surface and stone inside pore surface forms a kind of complex network structure, this kind of network structure is extremely dense, it may filter polar and carbon dioxide, slows down the speed that water molecules go in and out the quartz stone pore, so the quartz stone will not be soaked by the water molecules, meanwhile to be a barrier to stop alkaline compounds and salt to infiltrate from an interface to another, also can have the very good physical enhancement effect.

乳液型石材防护剂的溶质是具有一定活性的多官能度的硅氧烷和氟硅烷等组成，这种带有活性成份的基团与石材表层离子态水进行醇解反应，从而使硅氧烷和氟硅氧烷与石材表面进行化学键连接，由外向内在石材表面和石材内部毛的表层形成一种结构复杂的网状结构，此种网状结构极其密实，它可将极性水分子和二氧化碳进行过滤，减缓水分子进出石材毛孔的速度，不会被水分子浸湿，同时还有阻隔石材不同界面的碱性化合物和盐份向另外一个界面渗透，同时还能起到很好的物理增强效果。

Shop assistant: Please check at the door.

店员：请您到门口柜台交费。

In the end, transportation of PAHs in the environmental matrix was preliminarily investigated and discussed according to PAHs data of soils and sediments from a certain region in Shanghai. The result indicated that there are two or more pathways on PAHs transportation in the environmental matrix.

最后，对上海特定地区内PAHs在环境介质中的迁移径途进行了分析讨论，结果表明上海市土壤和沉积物等环境介质中PAHs的迁移存在多种途径。