桐油基水性光固化树脂的合成及性能研究

The Preparation of Tung Oil-based Waterborne UV-curable Resin and Performance Research

摘要:

以生物质资源桐油（TO）、马来酸酐（MA）为原料，通过Diels-Alder反应合成了桐油酸酐，再以其与丙烯酸羟乙酯（HEA）反应，经中和水化制备了桐油基水性光固化树脂。通过红外光谱（FTIR）、核磁共振氢谱（1H NMR）表征了合成产物的分子结构。考察了TO、MA以及HEA的比例对桐油基水性光固化树脂的乳液性质、光固化活性以及涂膜性能的影响。研究结果表明，当n(TO):n(MA):n(HEA):n(TEA)= 1:2.5:2.5:2.5时，合成的桐油基水性光固化树脂的稳定性、光固化活性以及涂膜性能最优异。

Abstract:

Tung oil anhydride(TM) was synthesized through a Diels-Alder reaction with tung oil(TO) and maleic anhydride(MA) as raw materials.Tung oil-based waterborne UV-curing resin was prepared via neutralizing and hydrating after tung oil anhydride(TM) reacting with hydroxyl ethyl acrylate(HEA). The molecular structure of synthetic product was characterized through the infrared spectra (FTIR) and nuclear magnetic resonance hydrogen spectrum (1H NMR) .The ratio of tung oil(TO), maleic anhydride(MA), hydroxy ethyl acrylate(HEA) and triethylamine(TEA) was considered to be influence on emulsion properties,curing properties and curing film performance of tung oil-based waterborne uv-curing resin.The results showed that the best mole ratio of raw materials was 1:2.5:2.5:2.5. Under this ratio, the emulsion stability,light curing activity and curing film performance are the most excellent.