水溶性乙二胺扩链光敏酚醛环氧树脂的合成及性能

Synthesis and Properties of Water-Soluble Diaminoethane-Chain-ExtendedPhotosensitive Epoxy-Phenolic Resin

以乙二胺扩链光敏酚醛环氧树脂为原料合成了一种可以在质量分数为0 2%的Na2CO3水溶液中具有最佳溶解性能的光敏酚醛环氧树脂。研究了该树脂的合成条件及工艺,发现当乙二胺扩链树脂∶马来酸酐∶浓硫酸为9g∶6 25g∶0 625mL时,酯化反应速率较快。研究发现该反应明显受到搅拌条件的影响,快速搅拌能提高反应速率;合成的树脂具有良好的储藏稳定性,在40～50℃的条件下储藏1周树脂性能无变化。

A novel photosensitive epoxy-phenolic resin which can be soluble in 0.2% Na_2CO_3 solution has been synthesized by using the photosensitive epoxy-phenolic resin chain-extended by diaminoethane. The synthetic technique and parameters have been examined. The experiment results show that the esterification reaction has more rapid speed when the ratio of diaminoethane-chain-extended-resin∶ maleic anhydride∶ sulfuric acid is 9 g∶6.25 g∶0.625 mL. It is also found that the esterification reaction ratio increases with agitation speed increasing. The novel synthesized resin has more stability and the performance of the resin has not been varied for a week under 40～50℃.