苯乙烯改性聚醋酸乙烯乳液合成工艺研究  

Preliminary Study on the Synthesis of Modified Polyvinyl Acetate Emulsion

作　　者：刘海英[1] 刘文明[1] 吴伟剑[1] 顾继友[1] 刘晓辉[2] 

机构地区：[1]东北林业大学材料科学与工程学院,黑龙江哈尔滨150040 [2]黑龙江省石油化学研究院,黑龙江哈尔滨150040

出　　处：《化学与粘合》2005年第6期352-354,共3页Chemistry and Adhesion

摘　　要：采用半连续分段加料法,研究了单体的加料方式和聚合工艺条件如搅拌速度、聚合反应温度、乳化剂等对乳液聚合稳定性的影响,合成出稳定的改性聚醋酸乙烯乳液。结果表明:改性单体苯乙烯的加入,可降低胶膜的吸水性,乳液粒径在1μm左右,压缩剪切强度可达10 MPa以上,可应用于胶黏剂和涂料行业。The stable modified polyvinyl acetate emulsion was prepared with semi - continuous stage feeding emulsion polymerization. The stability was remarkably affected by the loading methods, stirring velocity, polymerization temperature, ratio of nonionic emulsifier and anionic emulsifier, the content of PVA etc. Water absorption of VAc/BA/St films was 6%, which was much lower than that of VAc/BA （30%）. The particle diameters of emulsion was about 1μm and the compression shear strength was more than 10MPa evaluated by wood - wood bonding. The emulsion can be used in fields such as coatings and the bonding of porous materials.

关 键 词：聚醋酸乙烯乳液 耐水性 分段聚合 胶黏剂 涂料 

分 类 号：TQ433.433[化学工程]