本文選題：溶膠-凝膠　切入點：有機(jī)-無機(jī)　出處：《粉末冶金材料科學(xué)與工程》2017年06期 　論文類型：期刊論文

【摘要】：以甲基三乙氧基硅烷(MTES)和二甲基二甲氧基硅烷(DMOS)為有機(jī)前驅(qū)體,以堿性硅溶膠(CS)為無機(jī)相,采用溶膠-凝膠法在鋁合金基體表面制備有機(jī)-無機(jī)復(fù)合涂層。通過改變MTES與CS的質(zhì)量比來改變體系中硅氧烷與硅溶膠的配比,研究有機(jī)物與無機(jī)相的比例對涂層結(jié)構(gòu)與性能的影響。結(jié)果表明:涂層為有機(jī)-無機(jī)復(fù)合結(jié)構(gòu);體系中硅氧烷的比例較小時,涂層表面平整,涂層較薄;隨體系中硅氧烷比例增加,涂層的疏水性能、力學(xué)性能以及耐腐蝕性能先上升后下降,在m(MTES)/m(CS)為50%,固化溫度為100~120℃時涂層的性能最好,疏水角為102°,硬度為5H,附著力級別為0,涂層具有較好的耐腐蝕性能。
[Abstract]:Methyl triethoxysilane (MTESs) and dimethyl dimethoxysilane (DMOS) were used as organic precursors and alkaline silica sol (CSS) as inorganic phase. The organic-inorganic composite coating was prepared on the surface of aluminum alloy by sol-gel method. The ratio of siloxane to silica sol was changed by changing the mass ratio of MTES to CS. The effect of the ratio of organic matter to inorganic phase on the structure and properties of the coating was studied. The results showed that the coating was organic-inorganic composite structure, the ratio of siloxane was small, the surface of the coating was flat and the coating was thin. With the increase of the ratio of siloxane in the system, the hydrophobicity, mechanical properties and corrosion resistance of the coating first increase and then decrease. The coating has the best properties when the mass ratio of MTESU / mCSC is 50 and the curing temperature is 100 ~ 120 鈩，

本文編號：1629395