含超支化大分子单体的高固含量丙烯酸树脂的制备和表征  

Preparation and characterization of high solid acrylic resin with hyper-branched macromonomer

作　　者：张瑜[1] 刘军[1] 丁克毅[1] 陈华林[2] ZHANG Yu LIU Jim DING Ke-yi CHEN Hua-lin(School of Chemistry ＆ Environmental Protection Engineering, Southwest University for Nationalities, Chengdu 610041, P. R. C Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, P. R. C.)

机构地区：[1]西南民族大学化学与环境保护工程学院,四川成都610041 [2]中国科学院成都有机化学研究所,四川成都610041

出　　处：《西南民族大学学报（自然科学版）》2016年第6期638-645,共8页Journal of Southwest Minzu University(Natural Science Edition)

基　　金：国家自然科学基金项目(No.21474114);西南民族大学研究生创新型科研项目(No.CX2016SZ026)

摘　　要：以邻苯二甲酸酐,甘油,顺丁烯酸二酸酐（马来酸酐）,硬脂酸和苯甲酸等为原料,采用“A2＋B3＋CA2”反应体系,通过准一锅法（quasi-one-pot）制备了包含碳-碳双键（-C=C-）的超支化大分子单体（HBM）.合成HBM的四步反应进程都通过对反应体系的酸值（Av）和羟值（Hv）的实时分析进行控制.将HBM与甲基丙烯酸甲酯等4种丙烯酸单体进行自由基聚合,得到固含量为75%的丙烯酸树脂HSAR-1.用Tu-4法测定其粘度值仅为18~20 s,与固含量为42%的常规丙烯树脂相当.由于超支化单体的引入,HSAR-1的固含量比常规丙烯树脂（固含量42%）增加了78%,而实测的挥发性有机物（VOC）降低了40%.因此,采用HSAR-1制备涂料时,VOC将大幅度降低.An A2 ＋ B3 ＋ CA2 reaction system was utilized to prepare a hyper-branched macromonomer（HBM） containing a doub- le bond （-C = C-）. The starting materials were maleic anhydride, glycerin, trimethylol propane, stearic acid and benzoic acid. The synthesis had four steps and was conducted as a quasi-one pot procedure ; the progress of each step of the reaction was monitored by real-time analysis for acid value （Av）and hydroxyl value （Hv）of the reactants. After that, various acrylate monomers were in- troduced to the HBM via radical polymerization and a 75% solid content acrylic resin（ HSAR-1 ） was achieved. Compared with conventional commercial polyacrylate resin with a 42% solid content, solid content was increased by 78% and VOC was de- creased by 40% due to the inducing of HBM. The viscosity was as low as 18-20 seconds as determined by the analysis method of TU-4 CUP at 25 ~C, which provides the possibility of decreasing the organic solvent when using them to make operational coatings.

关 键 词：高固含量 超支化大单体 VOC 丙烯酸树脂 

分 类 号：O62[理学—有机化学]