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Thesis Advisor高林
Degree Grantor中国科学院大学
Place of Conferral北京
Degree Discipline材料工程
Keyword有机硅单体 三甲基氯硅烷 二甲基一氯硅烷 六甲基二硅氧烷 六甲基二硅氮烷 四(二甲基硅氧基)硅烷


Other Abstract

Rochow reaction is a great way for the synthesis of the organosilicon monomer. It greatly promoted the rapid development of organic silicon industry. However, the main products for domestic and foreign production of organic silicon monomer are dimethyldichlorosilane, other by-products such as trimethylchlorosilane production are only in small scale, especially dimethylchlorosilane almost don’t exist. Our production route feature unique design, with the production of dimethyldichloride silane at the same time, a large number of high purity trimethylchlorosilane and dimethylchlorosilane can also be produced. Further more, the use of trimethylchlor- osilane and dimethylchlorosilane in synthesis and various application is very important. This paper reported the synthesis of hexamethyldisiloxane and hexamethy- ldisilazane with trimethylchlorosilane, and tetrakis(dimethylsilyloxy)silane with dimethylchlorosilane. The optimal reaction conditions were selected by the orthogonal experiment. Trimethylchlorosilane hydrolysis’s optimum process conditions for preparation of hexamethyldisiloxane are as follows: reaction temperature is 25 ℃, reaction time is 30 min, water : trimethylchlorosilane volume ratio is 1:1 and concentration of NaOH is 0.40 mol/L. Trimethylchlorosilane ammonification reaction’s optimum process conditions for preparation of hexamethyldisilazane are as follows: trimethylchlorosilane : solvent volume is 1:5, water bath temperature is 35 ℃, reaction time is 4 h, concentration of NaOH is 0.40 mol/L. Dimethylchlorosilane hydrolysis’s optimum process conditions for preparation of tetrakis(dimethylsilyloxy)silane are as follows: reaction temperature is 20 ℃, reaction time is 2.5 h, silicon tetrachloride : dimethylchlorosilane mole ratio is 1:5, silicon tetrachloride : water mole ratio is 1:5. Repeating experiments of the designed process and optimal conditions proved the experiment above have great repeatability and the process is viable for industrial application.

Document Type学位论文
Recommended Citation
GB/T 7714
李培. 有机硅对称分子的制备与应用研究[D]. 北京. 中国科学院大学,2015.
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