飛機鋁合金基材 - 無機 / 有機混合塗料
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Transcript of 飛機鋁合金基材 - 無機 / 有機混合塗料
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11OutlineIntroductionSol-gel coating systemsSol-gel thin coating as metal surface treatmentSol-gel/epoxy resin hybrid coatingSummary
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Introduction
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Coating(1) (2) (1) (2)
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Main point 5
Formation of sol-gel network-M(OR)z-1(OH) M(OR)z-1(OH)+ROH 2M(OR)z-1(OH) (RO)z-1M-O-M(OR)z-1+H2O /RSi(OR)3+H2O RSi(OR)2(OH)+ROH Al(OR)3+H2O HO-Al(OR)2+ROH ~~RSi(OR)2(OH)+HOAl(OR)2~~ ~~RSi(OR)2-O-Al(OR)2~~
6Interaction of sol-gel network with the primer or topcoat-
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Sol-gel coating systems Table 1-
8/-/--Solid content5%2~4%17%45%pH2.0~3.010.55.06.0Viscosity(cp 20)-612550Appearance
Sol-gel coating systems -pH 2.5%9
Sol-gel coating systems/ (17%) / (3-glycidoxypropyl)Trimethoxysilane2-(3,4-epoxycyclohexyl)ethyltrimethoxysilane 120 - 45%-3
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10Corrosion inhibitors11 Hybrid inorganic/organic coating-EPI-REZ5522-WY-55EPT-CURETM
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Table 2 -/13- -/shell EPI-REZ 5522-WY-55 -/deft44W022-1:61:31:11:1(days)1515157(mil)1.5221.25802h
Sol-gel thin coating as metal surface treament: (1) (2)-24h
14 Table 3 -15pH10.510.5--6655
Corrosion resistance
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16Abrasion and corrsion testing
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Abrasion resistance1302h5%HCl0.1N NH4OH
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Sok-gel/epoxy resin hybrid coatings: UV ()
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Sok-gel/epoxy resin hybrid coatings
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Summary21
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The end