摘要
制备了UV固化环氧丙烯酸酯-纳米Al2O3复合涂料.对纳米复合涂层的硬度、附着力、耐腐蚀性及热稳定性等性能进行了表征,并考察了纳米Al2O3对涂层性能的影响规律.结果表明,涂层硬度及附着力先随纳米Al2O3添加量增加而提高,添加量为2%时,涂层附着力达1级;添加量为3%时,涂层铅笔硬度达6H;添加量继续增大,涂层硬度及附着力均下降.对纳米复合涂层的热重分析和电化学阻抗谱分析结果表明,加入纳米Al2O3能提高涂层的热稳定性,但加入未改性纳米Al2O3使涂层的耐腐蚀性下降.
UV curable epoxy acrylate-alumina nanocomposite coating was prepared. Its hardness, adhesion, corrosion resistance and thermal stability were characterized. The influences of nano-alumina on properties of coating were examined. The results show that the hardness and adhesion of coating were enhanced with increasing the amount of nano-alumina. When the amount was 2%, its adhesion would reach 1 grade. When the amount was 3%, pencil rigidity of coating would reach 6H. However, further increasing the amount of nano-alumina, its hardness and adhesion were decreased. TGA and EIS analysis results revealed that the addition of unmodified nano-alumina could improve thermal stability of the coating, but militated against corrosion resistance.
出处
《过程工程学报》
CAS
CSCD
北大核心
2009年第3期603-607,共5页
The Chinese Journal of Process Engineering
基金
国家自然科学基金资助项目(编号:50774022)
