丙烯酸改性醇酸树脂的合成研究

Synthesis of Acrylic Acid Modified Alkyd Resin

使用双键共聚法,将醇解法制备的醇酸树脂和丙烯酸酯(甲基丙烯酸甲酯,丙烯酸丁酯)合成得到改性醇酸树脂。通过黏度测试、红外光谱(FT-IR)以及差示扫描量热法(DSC)分析对其性能进行表征。结果表明,改性后的醇酸树脂,黏度升高了58%;酸值降低了48%;改性过程中消耗了醇酸树脂中的共轭双键;其玻璃化温度(Tg)提高到了44℃,常温下具有很好的自干性。

A modified alkyd resin has been synthesized from alkyd resin prepared by alcoholysis and acrylate(e.g.,methyl methacrylate and butyl acrylate)by double bond copolymerization.Its properties are characterized by viscosity test,infrared spectroscopy and DSC analysis.The results show that the viscosity of modified alkyd resin increases by 58%,the acid value decreases by 48%,the conjugated double bonds in alkyd resin are consumed in the process of modification,and the glass transition temperature of the modified alkyd resin increases up to 44℃,which has good selfdrying property at room temperature.