乌洛托品改性大豆蛋白胶粘剂性能影响的研究  

Study on Urotropine modified soybean protein adhesive in influence of properties

作　　者：刘俊红[1] 黄勇[1,2] 周世林[1] 蔡洋 任泽 Liu Junhong Huang Yong Zhou Shilin Cai Yang Ren Ze(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》2017年第10期20-23,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：以大豆蛋白为基体、乌洛托品为交联剂,制备了木材粘接用无醛环保型大豆蛋白胶粘剂。研究结果表明:当胶液pH为7、热压温度为140℃和w(乌洛托品)=7%(相对干基大豆蛋白质量而言)时,大豆蛋白胶粘剂的粘接性能相对最好;FT-IR(红外光谱)中1 236、1 007 cm-1处是乌洛托品中C—N的特征吸收峰,上述峰在pH为7和8时出现,但在pH为4、5、6时消失,表明在酸性、55℃条件下乌洛托品分解后能与蛋白质良好反应;乌洛托品能有效提高大豆蛋白胶粘剂的耐热性,并且较低的pH更有利于提高木材胶粘剂的耐热性。With soybean protein as matrix,Urotropine as crosslinker,a no-aldehyde and environmentallyfriendly soybean protein adhesive for bonding wood was prepared. The research results showed that the soybeanprotein adhesive had the relatively best bonding properties when pH value of adhesive solution was 7,hot pressingtemperature was 140 ℃,and mass fraction of Urotropine was 7% in drying soybean protein. The 1 236,1 007 cm-1 inFT-IR（infrared spectra）are the characteristic absorption peaks of C—N in Urotropine,and the above peaks wereappeared when the pH values were 7 and 8 respectively,but were disappeared when pH values were 4,5 and 6 respectively,which showed that the Urotropine after decomposition can well react with protein under the conditionof acid and 55 ℃. The Urotropine can effectively improve the heat resistance of soybean protein adhesive,and thelower pH value is more advantageous to improve the heat resistance of wood adhesive.

关 键 词：大豆蛋白 木材胶粘剂 乌洛托品 胶接性能 

分 类 号：TQ432.73[化学工程]