硅氧烷

Then according to the different ways of mesogenic units connecting to the ladderlike main-chain, the ladderlike polysiloxane liquid crystals are classified into fishbonelike and canoelike polysiloxane liquid crystals.

介绍了梯形聚硅氧烷液晶的结构特点，根据液晶基元接枝到梯形高分子主链上的方式，将梯形聚硅氧烷液晶分为鱼骨形和划艇形两种。

Methyltrichlorosilicane and phenyltrichlorosilicane are applied for the synthesization of the ladderlike polymethylsilsesquioxane and ladderlike polyphenylsilsesquioxane.

选用甲基三氯硅烷和苯基三氯硅烷为主要原料合成了梯形聚甲基倍半硅氧烷和梯形聚苯基倍半硅氧烷。

The initial three chapters of this dissertation aim to improve the regularity of ladderlike polysiloxane through strong H-bonding template and slowly dropping half water for hydrolysis and condensation.

本论文前三章旨在利用强氢键模板作用和半水量水解同步缩合脱氯化氢的改进方法首次合成了(1)高规整性、可溶的反应性含对苯二胺有机桥基的聚氢基硅氧烷高分子，29Si-NMR 图中显示梯形主链上硅原子-Si(HO2/2峰的基线宽度△1.0 ppm，这是至今文献报道的所有梯形聚硅氧烷规整性最好的数据；采用分段去撑法成功的合成了纯无机梯形聚氢基硅氧(来源：1bABC论文网www.abclunwen.com)烷。

To avoid the low yield in direct hydrosilylation addition of allyamine, 1, 1, 1, 3, 3, 3-hexamethyldisilazane is used to protect the amino groups, and the protective groups are removed easily after hydrosilylation addition, then the high yield of ladderlike copolymethyl-aminpropylsilsesquioxane was obtained.

为了克服将烯丙基胺直接与聚氢基甲基倍半硅氧烷进行硅氢加成反应接枝效率低的缺点，探索用六甲基二硅氮烷对烯丙基胺预保护，硅氢加成反应后再脱保护，从而以较高产率制备了含胺丙基、甲基的反应性梯形共聚倍半硅氧烷。

A series of organic-inorganic hybrid membrane were prepared by introducing mercapto silanes and amino silanes to sulfonated BPPO membranes through in-situ sol-gel.

将巯基硅氧烷和胺基硅氧烷引入到磺化BPPO膜中，通过原位溶胶凝胶法制备有机无机杂化膜。

Styrene-dimethylsiloxane block copolymers with types of andn were, synthesized under the existence of catalyst, lithium naphthalene, and couplins asent, stannous octoate or olisomer of dichlorodimethysiloxane.

本文用萘锂作为催化剂，辛酸亚锡或二氯二甲基硅氧烷的低聚物为扩链剂，设计和合成了分子量为6～13万苯乙烯与二甲基硅氧烷的結构单元数之比为1.0～9.1的嵌段共聚物和_n。

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.

用FTIR研究了聚硅氧烷、聚氨酯和IPN的化学结构和固化反应动力学，用TG-IR联用技术研究了聚硅氧烷、聚氨酯和IPN的耐热性及在无氧条件下的热裂解产物、热分解反应动力学和热分解机理。

In this paper, the emulsifier sodium polyether sulfovinate modified polysiloxane was synthesized by sulfuric acid esterification between chlorosulfonic acid and polyether modified polysiloxane, then alkali neutralization. It was a kind of nonionic and anionic composite emulsifier.

本论文以聚醚改性聚硅氧烷为原料，进行硫酸酯化反应，并进一步用碱中和，合成了聚醚改性聚硅氧烷硫酸酯钠乳化剂，该乳化剂属于非离子、阴离子复合型乳化剂。

Ingredients:shea butter extract, cetearyl alcohol, hexadecyl trimethyl ammonium bromide, methylcyclohexyldimethoxy silane, poly dimethyl siloxane, tetradecanoic acid isopropyl ester, glycerol, amino silicone oil.

成分：，乳木果提取液，十六，十八混合醇，十六烷基三甲基氯化铵，环甲基硅氧烷，聚二甲基硅氧烷，肉豆蔻酸异丙酯，甘油，氨基硅油。

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。

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。