醋酸乙烯酯-大豆蛋白接枝共聚乳液胶黏剂的研制  

Synthesis of Emulsion Adhesive by Vinyl Acetate-Soy Protein Grafting Copolymerization

作　　者：贺宏彬[1] 王晓光[1] 宋阳[1] 尹满新[1] 

机构地区：[1]辽宁林业职业技术学院,辽宁沈阳110101

出　　处：《化学与粘合》2007年第2期146-147,150,共3页Chemistry and Adhesion

摘　　要：以尿素和亚硫酸钠改性大豆蛋白,与醋酸乙烯酯等复合单体在过硫酸铵引发下进行接枝共聚,合成了性能较好的醋酸乙烯酯-大豆蛋白接枝共聚乳液胶黏剂,降低了原料成本。研究了不同反应条件对乳液胶黏剂性能的影响,优化的反应条件是以聚乙烯醇作保护胶体,采用半连续乳液聚合工艺,复合单体与大豆蛋白比例为3.0∶1,引发剂用量1.2%(占单体质量),反应温度控制在70-75°C,共聚时间4.5h,制备的乳液胶黏剂具有最大剪切强度和良好综合性能。Emulsion adhesive was synthesized by vinyl acetate -soy protein grafting copolymerization with ammonium persulphate as initiator, urea and sodium sulfite as a soy protein unfolding agent. The cost of raw material was reduced. Effect of different process conditions on the emulsion adhesive was studied, and the optimal conditions were as follows： using polyvinyl alcohol as protective colloid, semi -continuous emulsion copolymerization was adopted, weight ratio of mixed monomer to soy protein was 3. 0： 1, amount of initiator was 1.2% （ weight ratio to monomer）, reaction temperature and time were 70 - 75 ℃ and 4.5 hours respectively. Under these conditions, the emulsion adhesive was synthesized with the highest shear strength and good properties.

关 键 词：醋酸乙烯酯 大豆蛋白 接枝共聚 乳液胶黏剂 

分 类 号：TQ433.433[化学工程]