首先提出一种相对简单的方法对无机涂层材料进行改性,即在处理的铝合金表面制备水性无机涂层,然后在无机涂层表面二次喷涂KH-550改性溶胶,对其进行改性,再经烘烤制备了有机改性无机涂层.对二次喷涂KH-550改性溶胶的一些因素对涂层表面性能影响的研究表明KH-550用量≥20%,能明显提高无机涂层的附着力、耐冲击性、耐水性等理化性能.对二次喷涂后涂层的微观形貌和接触角测试结果表明,在KH-550改性溶胶中引入无机纳米或超细粉体,获得了致密、平整的多功能涂层.最后通过对所提出方法的原理探讨及实验结果的分析,确定二次喷涂KH-550溶胶改性无机涂层材料,制备有机改性无机涂层的方法可行.
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