环氧丙烯酸酯改性对水性醇酸树脂性能的影响  

The impact of epoxy acrylate-modified on the properties waterborne alkyd resin

作　　者：袁腾[1] 刘文济[1] 赵韬[1] 周显宏[2] 王锋[1] 涂伟萍[1] 

机构地区：[1]华南理工大学化学与化工学院,广州510640 [2]东莞理工学院化学与环境工程学院,广东东莞523808

出　　处：《功能材料》2015年第2期2028-2032,共5页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(50903031);中央高校基本科研业务费专项资金资助项目(2013ZM0072);广东省重大科技专项计划资助项目(2010A080406002);广东省绿色化学产品技术重点实验室开放基金资助项目(GC201201)

摘　　要：以亚麻油、甘油、苯酐、顺酐为原料合成醇酸树脂,并利用环氧树脂、苯乙烯以及丙烯酸单体对所合成的醇酸树脂进行改性,得到一种环氧丙烯酸改性水性醇酸树脂。采用红外光谱表征了合成过程中每一步骤所得到的产物的结构,证明了成功在醇酸树脂链段上引入了改性链段;以热重分析和凝胶色谱考察了改性前后的醇酸树脂的性能,结果表明,偏酐与环氧丙烯酸改性后的醇酸树脂分子量及分散度都有所增加,其中环氧/AA/St改性的醇酸树脂分子量最大,分子量分布最宽,环氧/AA/St改性的醇酸树脂耐热性能得到了改善。最后对漆膜性能进行比较,结果表明,在水分散性方面,环氧/AA/St改性醇酸略弱于偏酐改性醇酸,产物粘度也相对较大,但是其稳定性、漆膜的附着力、耐水性以及耐盐水性能等与偏酐改性醇酸相比都明显得到了提高。Waterborne alkyd resin（WAR ）was synthesized by linsee d oil,glycerol,phthalic anhydride,maleic anhydride used as raw materials,while epoxy resin,styrene and acrylic monomers were used to modify the waterborne alkyd res-in,a epoxy acrylate modified waterborne alkyd resin was prepared.The structure of the products synthesized in each step were characterized with infrared spectroscopy,which proved that epoxy acrylate modified segment was introduced to the alkyd resin segment successfully.The properties of the waterborne alkyd resins before and after modified were stud-ied with Thermogravimetric Analysis and Gel Permeation Chromatography,the results showed that the molecular weight and the dispersity of the alkyd resin modified by TMA and epoxy acrylate had increased to some extent,respec-tively.the molecular weight of the alkyd resin modified by epoxy/AA/St was largest,and the molecular weight distri-bution was widest,while the heat resistance had improved greatly.Finally,the film properties of these three kinds of WAR were compared,the results showed that the water dispersion of the alkyd resin modified by epoxy/AA/St was slightly worse than that of TMA modified-alkyd resin,and the viscosity of the product was relatively larger,but the sta-bility,adhesion,water resistance and salt water resistance were significantly improved compared with TMA modified-al-kyd resin.

关 键 词：环氧丙烯酸 改性 水性醇酸树脂 热分析 性能影响 

分 类 号：TQ322[化学工程—合成树脂塑料工业] O631[理学—高分子化学]