Preparation of transparent monolithic methylsilsesquioxane (MSQ) aerogels via ambient pressure drying

Preparation of transparent monolithic methylsilsesquioxane (MSQ) aerogels via ambient pressure drying
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常压干燥制备透明整体式甲基倍半硅氧烷(MSQ)气凝胶

DOI:
10.1039/c7ra03882h
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发表时间:
2017-06
期刊:
影响因子:
3.9
通讯作者:
Yang Guoqiang
Yang Guoqiang
中科院分区:
化学3区
文献类型:
--
作者:
Zhang Tao;Yuan Hua;Wang Shuangqing;Guo Xudong;Hu Rui;Li Yi;Yang Guoqiang

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以甲基三甲氧基硅烷(MTMS)为原料,采用常压干燥(APD)法制备了整体式甲基倍半硅氧烷(MSQ)气凝胶。四乙基氢氧化铵(TEAH)被用来抑制宏观相分离和加速缩合反应。所获得的疏水性MSQ气凝胶是高度透明的,并且耐受长时间暴露于侵蚀性介质。这种新型的防腐蚀性能可以通过POTS和PDTS的化学改性得到进一步改善。
Monolithic methylsilsesquioxane (MSQ) aerogels have been prepared from methyltrimethoxysilane (MTMS) via an ambient pressure drying (APD) method. Tetraethylammonium hydroxide (TEAH) was used to suppress macroscopic phase separation and accelerate the condensation reaction. The obtained hydrophobic MSQ aerogels are highly transparent and withstand exposure to aggressive media for extended periods of time. This novel anti-corrosion property can be further improved by chemical modification with POTS and PDTS.
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