环氧大豆油基水溶性醇酸树脂的合成、表征及酯化动力学研究  

Synthesis,characterization and esterification kinetics of epoxidized soybean oil based water soluble alkyd resin

作　　者：马百峰 甄卫军[1] 欧阳辰光 阿不拉江·玉素甫 欧全胜 Baifeng Ma;Weijun Zhen;Chenguang Ouyang;Yusupu Abulajiang;Quansheng Ou(School of Chemical Engineering and Technology,Xinjiang University,Urumqi,Xinjiang 830046,China;School of Material Science and Engineering,Nanjing University of Technology,Nanjing,Jiangsu 211800,China;Xinjiang Aoweike Coating Manufacturing Co.,Ltd.,Changji,Xinjiang 831199,China)

机构地区：[1]新疆大学化工学院,新疆乌鲁木齐830046 [2]南京工业大学材料科学与工程学院,江苏南京211800 [3]新疆澳唯克涂料制造有限公司,新疆昌吉831199

出　　处：《日用化学工业》2021年第11期1080-1087,共8页China Surfactant Detergent & Cosmetics

基　　金：新疆大学校企合作课题(20200314001)。

摘　　要：以环氧大豆油(ESO)、三羟甲基丙烷(TMP)、邻苯二甲酸酐(PA)和水性单体偏苯三酸酐(TMA)作为主要原料,采用醇解、酯化和中和等工艺路线合成水溶性醇酸树脂。以静态接触角为目标函数,通过正交试验设计优化水溶性醇酸树脂的较优合成条件,并对树脂的结构进行表征。结果表明:油度为40%,醇超量为1.2,TMA和PA的摩尔比为0.5∶1,最终酸值控制在60~80 mgKOH/g,水溶性醇酸树脂表现出优异的水溶性和稳定性。酯化动力学分析表明酯化反应符合二级反应动力学模型,由阿伦尼乌斯方程求得酯化反应活化能Ea为88.081 kJ/mol。Epoxidized soybean oil(ESO),trimethylolpropane(TMP),phthalic anhydride(PA)and water-soluble monomer trimellitic anhydride(TMA)were used as the main raw materials to prepare water-soluble alkyd resin by alcoholysis,esterification and neutralization.With the static contact angle as the objective function,the synthesis conditions of water-soluble alkyd resin were optimized by the orthogonal experiment.The structure of the water-soluble alkyd resin was characterized.The results of Fourier transform infrared(FTIR)show that the water-soluble alkyd resin is successfully synthesized.The optimum conditions obtained by orthogonal test are as follows:the oil content is 40%;the alcohol excess is 1.2;the molar ratio of TMA to PA is 0.5∶1;the final acid value is controlled at 60-80 mg KOH/g.Through the transmittance testing and storage stability testing,the prepared water-soluble alkyd resin shows excellent water solubility and stability,indicating that epoxidized soybean oil can be used as the raw material for manufacture of waterborne alkyd coatings.The rotational rheological analysis shows that the water-soluble alkyd resin has good rheological properties and conforms to the pseudoplastic fluid.Esterification kinetics analysis shows that temperature has significant effect on the esterification reaction.With the increase of temperature,the reaction rate and conversion rate are significantly improved.The study on esterification kinetics finds that it conforms to the second-order reaction kinetics model,and the activation energy E_(a) of esterification reaction is 88.081 kJ/mol according to Arrhenius equation.

关 键 词：环氧大豆油 醇酸树脂 酯化动力学 水溶性 

分 类 号：TQ658[化学工程—精细化工]