文献类型：期刊文献

英文题名：Preparation of waterborne phosphated acrylate-epoxy hybrid dispersions and their application as coil coating primer

作者：Yu, Jianfeng[1,2];Pan, Hongxia[2];Zhou, Xiaodong[1]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Shanghai Coatings Co Ltd, Ctr Res & Dev, Shanghai 200062, Peoples R China

年份：2014

卷号：11

期号：3

起止页码：361

外文期刊名：JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH

收录：;EI(收录号：20142117738823);WOS:【SCI-EXPANDED(收录号:WOS:000335508400008)】；

语种：英文

外文关键词：Waterborne coil coatings; Acrylic-modified epoxy; Primer; Phosphated epoxy

摘要：In this paper, a series of waterborne acrylic-modified epoxy hybrid dispersions were synthesized and successfully used as primers for coil coatings. Epoxy was phosphated to improve its adhesion to the metal substrate. The grafting reaction of acrylate monomers onto the high molecular weight epoxy resins was studied with infrared spectroscopy, differential scanning calorimetry, and nuclear magnetic resonance. The structure and resin molecules were found to be as expected and the film had the best performance when the acrylate monomer made up less than 40 wt% of the epoxy resin. Modification of the epoxy with phosphoric acid could increase the adhesion to the metal substrate. Better adhesion was achieved with greater amounts of phosphoric acid. R578 urea resin was found to be the most suitable for crosslinking of the resin in this system, and a paint film based on the resulting resin had excellent overall performance.