硅氧烷

The Limit Oxygen Index also can be raised from 16.5 to 22 and 23 respectively.The Octaphenyl POSS is synthesized via the hydrolysis and condensation of phenyltrichlorosilane (PhSiCl_3) and the subsequent rearrangement reaction catalyzed by tetramethylammonium hydroxide. Poly are easily synthesized from Ph-POSS via bromination with Br_2/Fe system.

以苯基三氯硅烷为起始原料，通过水解缩合、催化重排的办法制备了八聚苯基笼型倍半硅氧烷，在Fe粉催化条件下将溴元素引入Ph-POSS的苯环得到Br-POSS；使用该种Br-POSS和Sb_2O_3的混合物(3∶1，质量比)作为聚苯乙烯树脂的添加剂，采用熔融共混法制备(Br-POSS+Sb_2O_3)／PS复合材料。

A series of modified polyurethane elastomer materials with different amino siloxane content were synthesized,which were based on polyoxypropylene glycol,aminoethyl aminopropyl poly,toluene diisocyanate and the curing agent dimethylsulfide toluylenediamine.

以聚氧化丙烯二醇或聚氧化丙烯三醇、氨乙基氨丙基聚二甲基硅氧烷、甲苯二异氰酸酯为原料在无溶剂条件下制备预聚体，利用二甲基硫甲苯二胺为固化剂合成一系列氨基硅油改性聚氨酯弹性体材料，并对材料的力学性能、耐热性、表面水接触角等性能进行了测试。

The invention makes clay brick powders as main materials, and is compounded from such chemical industry materials as acrylic acid emulsion, sodium hexametaphosphate, sodium benzoate, glycol, trimethylene glycol, polydimethyl siloxanes, methylcellulose and titanium oxide powder as per certain proportion.

本发明以粘土砖粉为主要原料，和丙烯酸乳液、六偏磷酸钠、苯甲酸钠、乙二醇、丙二醇、聚二甲基硅氧烷、甲基纤维素、钛白粉等化工原料按一定配比组合而成。

Cage hexahedral silsesquioxane (T 8), an octamer, each of its sides consists of silicon and oxygen ring. From which, many kinds of macromer and related inorganic/organic nanocomposites containing inorganic silicon dioxide core have been prepared.

笼型六面体倍半硅氧烷(T8)是一类每个面都由硅氧八元环构成的六面体，从它出发可制得以二氧化硅为核心的大分子单体以及无机/有机纳米复合材料。

It was found that both DVN and DVP had better char yield in air than in nitrogen at 800℃which indicates that oxygen can help the charring progress of polysiloxane..

左右，同时发现DVN和DVP在空气中的成炭性均好于其自身在氮气中的成炭性，说明氧气的存在有利于促进聚硅氧烷成炭。2。

To help rubber closures flow through stoppering equipment, manufacturers sometimes use polydimethylsiloxane fluid.

帮助橡胶封流经stoppering设备制造商有时使用硅氧烷流体。

Methodshexamethyldisiloxane polymer film was obtained by plasma polymerization method on coverslips. oxygen (o2) plasma treatment was employed to modify the surfaces with different time so that a series of surface with different wettability were produced. l929 cell were cultured on these surfaces to observe the cell attachment rate and cell spreading in 6 and 12 hours.

使用薄膜等离子体聚合法在圆形盖玻片表面生成六甲基二硅氧烷(hexamethyldisiloxane， hmdso)薄膜聚合体，然后用低温氧等离子体轰击聚合体表面，根据轰击时间的不同形成一系列的不同润湿性表面，将成纤维细胞系l929接种于不同润湿性表面，观察6h、12h时细胞的贴附率，并观察细胞的形态。

Methods Hexamethyldisiloxane polymer film was obtained by plasma polymerization method on coverslips. Oxygen (O2) plasma treatment was employed to modify the surfaces with different time so that a series of surface with different wettability were produced. L929 cell were cultured on these surfaces to observe the cell attachment rate and cell spreading in 6 and 12 hours.

使用薄膜等离子体聚合法在圆形盖玻片表面生成六甲基二硅氧烷(Hexamethyldisiloxane， HMDSO)薄膜聚合体，然后用低温氧等离子体轰击聚合体表面，根据轰击时间的不同形成一系列的不同润湿性表面，将成纤维细胞系L929接种于不同润湿性表面，观察6h、12h时细胞的贴附率，并观察细胞的形态。

The carrier gas is nitrogen, headspace plate temperature is 70℃.

方法使用配置顶空进样的气相色谱仪，以水为溶剂，色谱柱为 Agilent DB-624毛细管色谱柱（6%氰丙基苯基-94%二甲基聚硅氧烷），柱温：40℃，保持 12min ，以30℃· min-1 的速度升温至100℃，保持 5min ，再以40℃· min-1 的速度升温至240℃，保持 5min ；以氮气为载气，柱流速0.7mL · min-1 ；氢火焰离子化检测器；顶空加热盘温度70℃。

A great deal of research work on ionomers has been done.However, up to now, the study on the polysiloxane ionomers has seldom beenreported in the literature.

有关离聚体的研究已经做了大量的工作，然而到目前为止，文献中关于硅氧烷离聚体的报道极少。

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。