摘要： 采用溶液聚合法合成了水溶性丙烯酸树脂(WBAC),将其与季戊四醇三丙烯酸酯(PETA)、紫外光引发剂调配制备了水性丙烯酸光致抗蚀干膜。傅里叶红外光谱分析表明,PETA和WBAC发生了光固化交联反应;光致抗蚀干膜感光层涂膜性能测试表明,经UV固化后涂膜的凝胶率和硬度能显著提高,改善涂膜的耐溶剂性,降低了涂膜的水溶性;GPC和TG分析表明,经UV固化后,光致抗蚀干膜相对分子质量明显变大,耐热性能显著提高。PETA和WBAC的质量比0.4时,UV固化后光致抗蚀干膜的水溶性5.54%,乙醇失质量率WY为5.56%,凝胶率和摆杆硬度分别为74.18%和0.71,涂膜失质量5%的温度为302.6℃。

关键词: 光致抗蚀干膜, 水溶性丙烯酸树脂, 季戊四醇三丙烯酸酯, 环保

Abstract: Water-soluble acrylic resins(WBAC) were synthesized by radical polymerization, which were formulated with pentaerythritol triacrylate(PETA) and UV photoinitiator to prepare waterbome UV-curing corrosion protective coatings. FT-IR of the resin showed that UV crosslinking between WBAC and PETA happened. Test results of dry film indicated that UV crosslinking can greatly improve the solvent resistance and reduce the water solubility of film due to the increase of the gel contents and its hardness. GPC and TG tests showed that the molecular weight and the heat resistance of coatings film greatly increased after UV curing. When the mass ratio of PETA and WBAC is 0. 4, the water solubility of coatings film is 5. 54%, the ethanol weight loss is 5. 56% after UV curing, the gel contents and hardness is 74. 18% and 0. 71 respectively, the temperature with 5%oweight loss, is 302.6℃.

Key words: UV curing corrosion protective coatings film, waterborne acrylic resin, pentaerythritol triacrylate: environmentally friendly