大豆基木材胶粘剂的制备及热压工艺研究  

Research on Preparation of Soy-based Adhesives and their Hot-pressing Process on Wood Adhesion

作　　者：宋祖伟[1] 王玉平[1] 刘亚男[1] 于守晓 李建忠[1] 

机构地区：[1]青岛农业大学化学与药学院,山东青岛266109 [2]山东华凯塑胶科技有限公司,山东临沂276400

出　　处：《青岛农业大学学报（自然科学版）》2016年第3期210-213,共4页Journal of Qingdao Agricultural University(Natural Science)

基　　金：国家自然科学基金(21404066);青岛农业大学高级人才启动基金(631222);青岛市应用基础研究计划(15-9-1-16-jch)

摘　　要：应用环氧大豆油(ESO)、硼酸溶液对大豆分离蛋白(SPI)进行改性,制备了环保的大豆基木材胶粘剂。考察了ESO用量、硼酸浓度对蛋白胶粘剂胶合强度和耐水性能的影响,研究了热压工艺对胶粘剂性能的影响。结果表明:最佳反应条件为反应温度为65℃,SPI和ESO用量分别为10g和12g,硼酸浓度为1.0%,水为100mL;在热压温度为150℃,压力1.5 MPa,热压时间1.5min/mm条件下,对杨木的拉伸剪切拉伸强度达到2.2 MPa,耐湿拉伸强度达到1.86 MPa,符合木材胶粘剂的要求;红外光谱证明ESO与SPI发生了改性反应。Soy protein--based wood adhesive was prepared using soybean protein isolate （SPI） modified by epoxy soybean oil （ESO） and boric acid. The effects of the ESO content and the boric acid concentration on the adhesive bonding strength and water resistance property were discussed. The influence of the hot-- pressing temperature and time on the properties of the adhesive was studied. The optimal reaction parame- ters were determined as follows, reaction temperature is 65℃, the amounts of SPI and ESO are 10 g and 12 g respectively and the concentration of boric acid is 1.0%. Both the adhesive bonding strength （2.2 MPa） and wet tensile strength （1.86 MPa） can satisfy the requirements of wood adhesive when the hot-- pressing temperature, time and pressure are 150 ℃, 1.5 MPa and 1.5 min/mm, respectively. The infrared spectra showed that modification reaction took place between ESO and SPI.

关 键 词：胶粘剂 环氧大豆油 胶合强度 改性大豆蛋白 

分 类 号：TQ432.7[化学工程]