环己醇封端不饱和聚酯树脂的合成及性能研究

Synthesis and Properties of Cyclohexanol End-capped Unsaturated Polyester Resin

由邻苯二甲酸酐、顺丁烯二酸酐、丙二醇、环己醇合成了环己醇封端改性的不饱和聚酯树脂,反应原料的摩尔比为:邻苯二甲酸酐/顺丁烯二酸酐/丙二醇/环己醇为0.65/0.5/1.0/0.31,封端反应温度为200～210℃,封端改性后树脂浇注体的力学性能与通用型191#树脂的力学性能基本相当,但耐热性能有所提高,同时树脂浇注体的耐水和耐酸性能均有明显提高。

Cyclohexanol end - capped unsaturated polyester resin was synthesized from phthalic anhydride, maleic anhydride, propylene glycol and cyclohexanol. The molar ratio of phthalic anhydride/maleic anhydride/propylene glycol/cyclohexanol was 0.65/0.5/1.0/0.31. The temperature of end - capping reaction was 200 - 210℃. The resin casting of cyclohexanol endcapped UPR had the same mechanical properties as 191 # UPR,but its heat resistance had improved. Meanwhile, the resin＇ s resistance to water and acid has also improved.