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以淀粉接枝聚醋酸乙烯酯(淀粉-g-PVAc)作为增强组分,环氧树脂(EP)作为耐水改性组分,制备了一种新型的粘接强度较高、耐水性较好的玉米淀粉胶粘剂。结果表明:当m(淀粉-g-PVAc)∶m(EP)=2∶1、w(淀粉-g-PVAc/EP)=70%(相对于氧化淀粉乳质量而言)时,改性淀粉胶粘剂的综合性能相对最好,其干态剪切强度和湿态剪切强度分别为4.50、2.51 MPa,黏度为0.875 Pa.s;该改性淀粉胶粘剂在胶合板生产领域中具有良好的应用前景。
With starch-grafted polyvinyl acetate (starch-g-PVAc) as a reinforcing component and epoxy resin (EP) as a water-resistant modifying component, a novel adhesive with higher bonding strength and better water resistance Corn starch adhesive. The results showed that when the modified starch (starch) has a specific surface area ratio of m (starchg-PVAc): m (EP) = 2: 1 and w (starchg-PVAc / EP) = 70% (relative to the mass of oxidized starch milk) The adhesive has the best comprehensive performance, the dry shear strength and wet shear strength are 4.50,2.51 MPa and the viscosity is 0.875 Pa.s, respectively. The modified starch adhesive has good application prospects in the field of plywood production.