硅氧烷

Experiment results indicate that both the ethylenic derivative of benzophenone and the new synthesized polysiloxane are characteristic of three typical intensive and broad absorption bands in ultraviolet region at about 240nm, 288nm and 326nm, and show effective ultraviolet absorptive ability in wavelengths between 240nm and 400nm.

结果表明：中间体和聚硅氧烷在紫外光区均具有二苯甲酮衍生物特有的三条吸收谱带，对波长240~400nm的紫外光有良好的吸收作用。

In the presence of alkalinity and tetraethyl ammonium bromide, 2,4-dihydroxy benzophenone reacts with allyl glycidyl ether to form an ethylenic derivative of benzophenone, 2-hydroxy-4-(β-hydroxy-γ-allyloxy) propyloxy benzophenone, which can further undergo hydrosilylation with polyhydromethylsiloxane.

在相转移催化剂四乙基溴化按作用下，利用2，4-二羟基二苯甲酮与烯丙基缩水甘油醚在碱性水溶液中的开环加成反应，合成了中间体4-丙氧基－2-羟基二苯甲酮，将其进一步与聚甲基氢硅氧烷进行硅氢化加成反应。

DATA SYNTHESIS:① Medicinal gum, hose and other products: The medical stopper used for sealing is requested to have the flexibility, resistant to cold, water, oil and disinfectant, and pinprick can still keep the original closeness and gastightness, etc.

资料综合：①硅橡胶及聚氨酯的结构性能：硅橡胶是以高分子量的线型聚有机硅氧烷为基础，添加特定组分，加工后，制成具有一定强度和伸长率的橡胶态弹性体。

We studied their properties by IR, NMR, OPM and DSC and found that the ratio of Cu2+/DK-C11-C12 affects the mesomorphic temperature range and the results show that chelating units can play a mesogen function.c Synthesis and mesomorphic properties study of Cu-coordinating liquid crystalline polysilsesquioxanes with heptyl group on the side chain.

2对以β-二酮为侧链的梯形无规聚硅氧烷铜络合物用IR，NMR进行了结构表征，用DSC，偏光显微镜等方法进行了液晶性能的表征，并与同类化合物的性能进行了比较和研究，结果表明：Cu~(2+)含量对液晶相温度区间有明显的影响。

Examples of monomers which have on average not less than 3 cross-linking groups per molecule include for example tri, tetra, penta and hexa functional isocyanates, alcohols, amines, epoxys,acrylates, siloxanes and imines.

其中的单体平均不超过3交叉连接不到每分子团体有例子包括，例如三，四，五溴和六功能异氰酸酯，醇，胺，epoxys，丙烯酸酯，硅氧烷和亚胺。

The hydrolyzation was studied by measuring surface tension change with time and that of these trisiloxane surfactants were very serious.

第五章合成了三个连接基为亲水性的葡糖酞胺基二聚三硅氧烷表面活性剂，并测定了其性能。

Then membrane"s properties of polymer were studied via different dosage and adding ways of MATS. While the MATS" amount is 5% of polysiloxane, its hydrophile angle is bigger than 90?

其次研究了硅烷偶联剂MATS对乳液膜性能的影响，MATS用量为聚硅氧烷的5％，涂膜润湿角大于90°，涂膜的憎水性好。

It can dissolve in the water and oil, and it's easy to regulate. It has all the excellent performances of the traditional polysilioxane product, such as, resisting high and low temperature, anti-ageing, hydrophoby, electrical insulation and low surface tension etc.. In the meanwhile, it has the function of the lubricating, softening, good spreading and emulsification stability offered by polyether chains. And it can be used as PU foam homogenizing agent, textile auxiliary, oil field demulsifier, cosmetic auxiliary, coating leveling agent, detergent, defoaming agent and emulsifier etc.

它兼具水溶、油溶性，且易于调节，既具有传统的硅氧烷类产品的各项优异性能，如耐高、低温、抗老化、疏水、电绝缘、低表面张力等，同时又具有聚醚链段提供的润滑作用、柔软效果、良好的铺展性和乳化稳定性等特殊性质，可作为聚氨酯匀泡剂、纺织助剂、油田破乳剂、化妆品助剂、涂料流平剂、清洁剂、消泡剂、乳化剂等。

The method includes steps:(1) dropping triethoxy - 3 - propyl silicane isocyanic acid to ethanol solution of pH sensitive reagent to obtain reaction fluid A;(2) mixing siloxane, acid, and water to obtain reaction fluid B;(3) mixing reaction fluid A, reaction fluid B and solution of calcium chloride according to proportion to obtain solution C;(4) coating solution C on micropore base of micropore plate, using sealing tape to seal micropores, and using needle to perforate each micropore at center, and protecting from light; after placing it a period of time, the method adds distilled water to micropores, keeping the back up.

本发明公开了一种微孔板pH传感器的原位制备方法，其步骤是首先将三乙氧基-3-异氰酸丙基硅烷滴入pH敏感试剂的乙醇溶液中，得反应液A；其次是将硅氧烷、酸和水混合，得反应液B；第三是取反应液A、反应液B及氯化钙溶液，按比例混合，得溶液C；第四是取溶液C涂于微孔板的微孔底部，用密封带将微孔封住，并用针在每个微孔中央刺孔，避光保存。

The synthesis of reactive ladderlike polysiloxane is one of the most challenging tasks, from which a series of novel functional ladderlike polysiloxane can be prepared.

而合成具有反应性的梯形聚硅氧烷更是一个重要的前沿课题，可以进一步衍生出一系列新型的梯形主链的功能高分子。

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。