材料期刊网

以甲基丙烯酸甲酯(MMA)、丙烯酸丁酯(BA)以及丙烯酸十八酯(SA)为原料，甲基丙烯酸-β-羟乙酯(HEMA)为羟基功能单体，含氟丙烯酸酯单体为有机氟改性剂，通过溶液自由基聚合反应制备了含氟丙烯酸树脂溶液，再与固化剂配合使用制得高耐水性疏水涂膜。研究了不同含氟丙烯酸酯单体对涂膜的水接触角和水溶率的影响，讨论了甲基丙烯酸全氟烷基乙酯(PFMA)与HEMA不同用量对涂膜的疏水性和耐水性的影响，获得了最佳反应配方：MMA 57%，BA 12%，SA 4%，PFMA 20%， HEMA 7%。对优化配方下制备的涂膜进行了红外光谱分析，与市售涂料相比，测试了涂膜的综合性能。结果表明，最佳反应配方制备的涂膜的水接触角为132.7°、水溶率为4.1%，综合性能与美国Ultratech公司生产的空调铝箔用超疏水涂料Ultra AC系列透明清漆相当。该涂料满足空调铝箔表面处理要求。

A fluoroacrylic resin solution was synthesized by radical polymerization based on methyl methacrylate (MMA), butyl acrylate (BA), and stearyl acrylate (SA) as materials with 2-hydroxyethyl methacrylate (HEMA) as hydroxy functional monomer and fluorinated acrylate monomer as organic fluorine modifier, and then blended with curing agent to prepare a hydrophobic coating with high water resistance. The effects of different fluoroacrylate monomers on water contact angle and water dissolution rate of the coating were studied. The influence of the dosages of perfluoroalkyl ethyl methacrylate (PFMA) and HEMA on hydrophobicity and water resistance of the coating was discussed. The optimal reaction formulation was determined as follows: MMA 57%, BA 12%, SA 4%, PFMA 20%, and HEMA 7%. The coating prepared with the optimal formulation was characterized by Fourier transform infrared spectrometry,and tested for comparison of the comprehensive performance with a commercially available product. The results indicated that the coating has a water contact angle 132.7° and a water dissolution rate of 4.1%, being matchable to the comprehensive performance of the superhydrophobic coating formed from the Ultra AC series transparent vanish (a product of the Ultratech Ltd., USA, used for aluminum foils of air conditioner). The coating meets the requirement of surface treatment of aluminum foils for air conditioner.