聚乙烯醇改性大豆蛋白胶粘剂的制备与性能研究  

Study on preparation and properties of polyvinyl alcohol modified soy protein adhesive

作　　者：刘俊红[1] 黄勇[2] 王帮款 吴涛 廖程 Liu Junhong;Huang Yong;Wang Bangkuan;Wu Tao;Liao Cheng(Sichuan Vocational College of Chemical Technology, Luzhou 646005, China;Sichuan Institute of Technology,Zigong 643000,China)

机构地区：[1]四川化工职业技术学院,四川泸州646005 [2]四川理工学院,四川自贡643000

出　　处：《中国胶粘剂》2018年第4期27-30,共4页China Adhesives

基　　金：四川省科技支撑计划项目(2016FZ0033);泸州市科技计划项目(2016-S-63(2/3)

摘　　要：以12%PVA(聚乙烯醇)溶液为共混改性剂,制备了胶合板用改性大豆蛋白胶粘剂。着重探讨了PVA溶液用量、热压温度和热压时间对胶合板粘接性能的影响,并对该胶粘剂的结构进行了表征。研究结果表明:随着PVA溶液用量的增加,胶粘剂的黏度增大,但胶合板的粘接强度呈先降后升态势;当w(PVA)=80%(相对于大豆蛋白胶粘剂质量而言)、热压温度为130℃和热压时间为15 min时,胶合板的粘接性能相对最好;PVA和纯大豆蛋白之间存在较强的氢键作用,这是提升改性大豆蛋白胶粘剂粘接强度的主要原因。With 12%PV for plywood was prepared. The A （polyvinyl alcohol） solution as influences of some factors （such blending modifier, a modified soy protein adhesive as PVA solution and hot-pressing time） on bonding properties of plywood were emphaticall content, hot-pressing temperature, y discussed, and the structure of adhesive was characterized. The research results showed that the viscosity of adhesive was increased but the bonding strength of plywood had the trend of fall-rise with increasing PVA solution, The plywood had the relatively best bonding properties when mass fraction of PVA was 80% in soy protein adhesive, hot-pressing temperature and hot-pressing time were 130 ~C and 15 min respectively. There are the strong hydrogen-bond between PVA and pure soy protein, this is the main cause of promoting bonding strength of modified soy protein adhesives.

关 键 词：大豆蛋白 木材胶粘剂 聚乙烯醇 粘接性能 

分 类 号：TQ432.73[化学工程]