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。 Using soy protein as matrix and urotropine as cross-linking agent, a non-formaldehyde environment-friendly soybean protein adhesive for wood bonding was prepared. The results show that the adhesive properties of soy protein adhesives are relatively best when the pH of the glue is 7, the hot pressing temperature is 140 ° C and w (urotropin) = 7% (relative to the amount of dry soy protein) ; FT-IR (IR) at 1 236,1 007 cm-1 is the characteristic absorption peak of C-N in urotropin. The above peaks appear at pH 7 and 8, but at pH 4,5 , Disappeared at 6 o’clock, indicating that under the condition of acidic, 55 ° C, methenamine reacted well with the protein; methenamine effectively increased the heat resistance of the soy protein adhesive, and the lower pH was more beneficial to improve the wood Adhesive heat resistance.