含叔胺氢卤酸盐水溶性感光酚醛树脂的研究

Study on Water Soluble Photosensitive Acrylic Phenolic Resins Containing Different Quaternary Ammonium Salts

以几种不同的叔胺氢卤酸盐对含丙烯酸酯基的环氧酚醛树脂进行开环改性 ,制得了不同的新型水溶性含季铵盐基及丙烯酸酯基的酚醛树脂 ,研究季铵盐基种类对其水溶性、感光性及热分解性能的影响。结果表明 ,反应能力的次序为 :三乙胺盐 >三甲胺盐 >二甲基苯胺盐 >三乙醇胺盐 >三正丁胺盐 ;盐酸盐 >氢溴酸盐 >氢碘酸盐。感光性能以三甲胺盐开环生成的酚醛树脂相对最强 ,水溶性以三甲胺盐、三乙胺盐开环生成的酚醛树脂相对最佳。发现由一半开环生成的季铵盐酚醛树脂在 16 0℃热处理 0 5h ,除部分分解外 ,还生成较多的水不溶物 ,同时卤离子含量及环氧基含量同步下降 ,说明热分解的同时既使卤离子转变 ,又使环氧基开环生成交联键。

Water soluble photosensitive quaternary ammonium salts-containing acrylic phenolic resins(AQPR) were synthesized by reaction of epoxy phenolic resin with different tertiary amine hydrohalide salts to form different quaternary ammonium salt groups. Conversion, photosensitivity and thermal decomposition of the products were compared in order to find a suitable water developable, photosensitive solder mask. The results showed that with regard to reactivity TEA>TMA>DMA>TENA>TBA; HCl>HBr>HI. The resin obtained from TMA exhibited the highest photosensitivity, whereas those from TEA and TMA showed the best water solubility. During thermal treatment of the products containing both quaternary ammonium salt groups and epoxy groups at 160 ℃ for 0.5 h, besides partial decomposition, water insoluble component was formed, whereas the halide ions and epoxy groups of the thermal decomposition product diminished. This implies that at the thermal decomposition not only the halide ions diminished, but also crosslinkage were formed.