以1-乙烯基咪唑和不同的溴代烷烃（1-溴乙烷、1-溴丙烷、1-溴丁烷）为原料，通过N-烷基化反应制备出溴化1-乙烯基-3-烷基咪唑类离子液体（［VAIM］Br），即：溴化1-乙烯基3-乙基咪唑（［VEIM］Br），溴化1-乙烯基-3-正丙基咪唑（［VPIM］Br），溴化1-乙烯基-3-正丁基咪唑（［VBIM］Br）。将［VAIM］Br离子液体、丙烯酸胺、丙烯酸与环氧丙烯酸酯（EA）复合，经UV光固化制备了3种阻燃涂层（［VEIM］Br／EA、［VPIM］Br／EA、［VBIM］Br／EA），并通过红外、紫外、极限氧指数仪、垂直燃烧仪及力学性能测定仪等手段对样品的性能进行表征。结果表明：［VBIM］Br／EA涂层综合性能较佳，当［VBIM］Br添加量为3.5 g时，涂层的阻燃性能最佳。此时涂层的极限氧指数为32、燃烧级别V-0、残炭率35.2%（500 ℃下马弗炉煅烧）和硬度为6H，且涂层具有较高的透光性，可见光区域（500～800 nm）内，其透过率为88％～91％。
1-vinyl-3-alkylimidazolium bromide ionic liquids （［VAIM］Br） including 1-vinyl-3-ethylimidazole bromide［VEIM］Br）， 1-vinyl-3-propylimidazole bromide （［VBIM］Br） and 1-vinyl-3-butyl imidazole bromide （［VPIM］Br） were prepared via N-alkylation reaction using 1-vinylimidazole and different bromoalkanes （e.g.， 1-bromoethane， 1-bromopropane and 1-bromobutane） as raw materials. Three kinds of flame retardant coatings （e.g.， ［VEIM］ Br／EA， ［VPIM］ Br／EA and ［VBIM］Br／EA） were prepared by UV curing method after ［VAIM］Br ionic liquid， amine acrylate， acrylic acid and epoxy acrylate （EA） being mixed. And the properties of the samples were characterized by infrared spectromete， ultraviolet visible spectromete， limiting oxygen index instrument， vertical burning tester and mechanical tester. The results showed that the comprehensive properties of ［VBIM］ Br／EA coating was better. When the addition of ［VBIM］Br was 3.5 g， the flame retardancy of the coating was the best. Meanwhile， its limiting oxygen index， combustion grade， carbon residue ratio （calcined in muffle furnace at 500 ℃） and hardness were 32， V-0， 35.2％ and 6 H， respectively. And the coating had higher transmittance. In the range of wavelength 500-800 nm， the transmittance of the coating was between 88 ％ and 91％.
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