高附着力丙烯酸阴极电泳涂料树脂的合成及应用

摘要

By use of the free - radical solution polymerization, a high adhesion acrylate resin for cathodic electrodeposion coatings was synthesized with monomers of tetrahydrofurfuryl methacrylate ( THFMA) , 2 -hydroxyethyl methacrylate (HEMA) , 2 - ( dimethylamino ) ethyl methacrylate ( DMAEMA ) , isobornyl methacrylate (IBOMA) and N-methylolacrylamide(NMA). Some factors that influence the coating appearance and properties of acrylic resin were studied. The results indicated that a smooth and high buid paint film could be formed at the condition of 15% THFMA, azodiisobutyronitrile as initiator and about 5. 8 pH bath solution, with the thickness 21.4 μm,gloss 130.4 and adhesion grade 0. This resin could be widely used in hardware, automobile industry, etc.%采用自由基溶液聚合法,以甲基丙烯酸四氢糠基酯(THFMA)、甲基丙烯酸羟乙酯(HEMA)、甲基丙烯酸二甲胺基乙酯(DMAEMA)、甲基丙烯酸异冰片酯(IBOMA)、N-羟甲基丙烯酰胺(NMA)等单体合成了高附着力丙烯酸阴极电泳涂料用树脂.研究树脂漆膜外观及性能的几种影响因素.实验结果表明:THFMA用量为15％,以偶氮二异丁腈为引发剂,槽液pH控制在5.8左右,可得到平整丰满漆膜,其附着力为0级,光泽可达130.4,膜厚为21.4μm.可广泛应用与五金、汽车等行业.