聚乙烯醇缩丁醛合成新工艺研究  

Study on new process of synthesizing polyvinyl butyral

作　　者：王俊武[1] 蒋文伟[1] 朱亚敏[1] 刘明 杨琴 李晶晶 

机构地区：[1]四川大学化学工程学院,四川成都610065 [2]四川宝利丰科技有限公司,四川什邡618400

出　　处：《中国胶粘剂》2016年第3期13-17,共5页China Adhesives

摘　　要：在不添加乳化剂的条件下,采用同时滴加盐酸(HCl)和聚乙烯醇(PVA)-正丁醛(BA)混合胶液,通过新型高效混合分散机制合成了聚乙烯醇缩丁醛(PVB)。研究结果表明:合成PVB的最佳工艺条件是m(BA)∶m(PVA)=0.60∶1、初始反应温度为30℃、pH为1.4左右、反应时间为2.5h和升温速率为10K/20min(最高至65℃);此时,BA利用率超过99%,并且PVB的透明度(超过96%)和雾度(低至0.2%)完全满足夹层安全玻璃的使用要求。The polyvinyl butyral（PVB）was synthesized by new high efficiency mixing dispersion mechanismand meanwhile adding hydrochloric acid（HCl）and mixed adhesive between polyvinyl alcohol（PVA）and n-butylaldehyde（BA）under the condition of no emulsifier. The research results showed that the optimal process conditionsof synthesizing PVB were obtained when mass ratio of m（BA）∶m（PVA） was 0.60∶1,the initial reactiontemperature was 30℃,pH value was about 1.4,reaction time was 2.5h,and heating speed was 10K/20min（thehighest to 65℃）. Here,the BA＇s utilization rate was above 99%,and the PVB＇s transparency（above 96%）andfog degree（low to 0.2%）could completely meet the application requirements of laminated safety glass.

关 键 词：聚乙烯醇缩丁醛 无乳催化 强效混合分散 夹层安全玻璃 

分 类 号：TQ324.3[化学工程—合成树脂塑料工业]