以甲基三甲氧基硅烷(MTMS)和丙基三甲氧基硅烷(PTMS)为原料,通过二者的水解共缩聚反应制备了改性甲基硅树脂涂料,该涂料所形成的涂层具有良好的柔韧性.利用电导率仪着重研究了MTMS和PTMS的水解反应的条件,以使二者能够更好地水解共缩聚.研究了MTMS/PTMS的物质的量比、加水量、蒸馏反应温度和时间对涂层性能的影响.结果表明:当MTMS/PTMS物质的量比为3∶1、H2O/烷氧基硅烷物质的量比为4∶1时,将PTMS预水解15 min后再一次性加入MTMS进行水解共缩聚反应,得到的改性甲基硅树脂涂料具有良好的综合性能,涂膜固化后铅笔硬度为4H,附着力为2级,柔韧性2 mm.
参考文献
| [1] | 黄文润.硅烷偶联剂及硅树脂[M].成都:四川科学技术出版社,2010 |
| [2] | Prabakar S;Assink RA;SANDIA NATL LABS ALBUQUERQUE NM 87185. .Hydrolysis and condensation kinetics of two component organically modified silica sols[J].Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites,1997(1/2):39-48. |
| [3] | 李方文,吴建锋,徐晓虹,吴小爱,马淞江.丙基三甲氧基硅烷的水解[J].化学工业与工程,2008(03):203-207,232. |
| [4] | 吴翠明,徐铜文,杨伟华.烷氧基硅烷溶胶-凝胶反应机理[J].化学进展,2007(01):80-86. |
| [5] | Salon MCB;Bayle PA;Abdelmouleh M;Boufi S;Belgacem MN .Kinetics of hydrolysis and self condensation reactions of silanes by NMR spectroscopy[J].Colloids and Surfaces, A. Physicochemical and Engineering Aspects,2008(2/3):83-91. |
| [6] | ARKLES B;STEINMETZ J R;ZAZYCZNY J et al.Factors contributing to the stability of alkoxysilanes in aqueous solution[J].Journal of Adhesion Science and Technology,1992,6(01):193-206. |
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