期刊
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
卷 55, 期 3, 页码 261-268出版社
SPRINGER
DOI: 10.1007/s10971-010-2243-4
关键词
Sol-gel coating; Methyltriethoxysilane; Polymethylhydrosiloxane; 3-aminopropyltriethoxysilane
资金
- Guangzhou Electronic Information Polymers Industry Engineering Technology Research Center
New composite coatings were prepared by mixing pre-hydrolyzed methyltriethoxysilane (MTES) sol by an acidic catalyst dibutyltin dilaurate (DBTDL) and polymethylhydrosiloxane (PMHS) in gasoline at room temperature. The gel process was thoroughly investigated regarding the use of different basic catalyst [3-aminopropyltriethoxysilane (APTES) or triethylamine (TEA)], as well as the ratios of pre-hydrolyzed MTES sol and PMHS with various content of active H. It was revealed that the composite coating from 2:1 ratio (w/w) of pre-hydrolyzed MTES sol with equimolar amounts of water and PMHS1.55 under the catalysis of APTES demonstrated high pencil hardness, and excellent resistance against contamination and corrosion. This composite coating (MTPM21-A) was further characterized by FTIR, Si-29 NMR, DSC and TGA.
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