UV固化松节油基聚酯丙烯酸酯的合成研究

Synthesis of UV-curable turpentine-based polyester acrylate

以松节油-马来酸酐(TMA)、顺丁烯二酸酐(MA)、1,2-丙二醇和丙烯酸(AA)为主要原料合成了紫外光固化松节油基聚酯丙烯酸酯(TMAPEA)低聚物。采用FT-IR对产品进行了结构表征。通过凝胶色谱,热重分析和涂膜性能测试研究了反应时间对产物酸值的影响,合成工艺对产物分子质量及固化膜性能的影响,TMA加入量对固化膜力学性能、耐化学腐蚀性和热稳定性的影响。结果表明,两步法优于一步法,第1步反应时间为6.5 h,第2步8 h,TMA的加入提高了固化膜的耐化学腐蚀性和热稳定性,TMAPEA可以作为耐热性或耐腐蚀性树脂使用。

UV-curable turpentine-based polyester acrylate（TMAPEA oligomer for coatings was prepared from turpentine-maleic anhydride（TMA,cis-butenedioic anhydride（MA,1,2-propylene glycol and acrylate acid（AA.The product structure was characterized by IR.The effect of reaction time on the acid values of the product,effect of synthetic process on the product molecular weight and the properties of UV-cured films and effect of TMA amounts on the mechanical properties,chemical resistance and heat resistance of the cured films were investigated by GPC,TG and coating performence testing.The results showed that the two-step method was better than the one-step method and the reaction time of the first and the second step was 6.5 h and 8 h,respectively.The chemical resistance and the heat resistance were improved with the addition of TMA.TMAPEA could be used for chemical resistance or heat resistance resins.