3种处理方式对小桐子蛋白基胶黏剂的影响

在前期豆粉改性小桐子蛋白基胶黏剂的基础上，研究NaOH-尿素、Ca（OH）2/NaOH和NaHSO3处理对小桐子蛋白基胶黏剂性能的影响。结果表明：采用复合碱Ca（OH）2/NaOH处理小桐子蛋白制备的蛋白基胶黏剂性能未达预期效果；采用NaOH-尿素处理小桐子蛋白制备的蛋白基胶黏剂，仅加入交联剂CRO和pMDI制备的蛋白基胶黏剂胶合板干、湿强度满足GB/T 98463—2004《胶合板》中Ｉ类胶合板的性能要求；采用NaHSO3对小桐子蛋白进行处理，加入的交联剂（KF、CRO和pMDI）制备的蛋白基胶黏剂胶合板干、湿强度均能满足GB/T 98463—2004《胶合板》中Ｉ类胶合板的性能要求，尤其以加入交联剂CRO和pMDI制备的胶合板性能远超这一标准。3种方式处理小桐子蛋白均能与加入交联剂（KF、CRO和pMDI）的发生一定的交联反应，使小桐子蛋白基胶黏剂的干、湿强度有所提高，其中湿强度提高明显。NaHSO3对小桐子蛋白进行处理，尽可能地保留蛋白大分子结构，使得以其制备的小桐子蛋白基胶黏剂干、湿强度较另2种处理有所提高。

Effect of 3 Treatments on Jatropha curcas Protein Based Adhesive

Based on the early study of soybean modifying Jatropha curcas protein based adhesives, effects of process of NaOH Urea treatment Ca(OH)2/NaOH and NaHSO3 treatment on Jatropha curcas protein based adhesives were studied in this paper. The results showed that cross linking reaction between Jatropha curcasprotein treated by the front three processes and subsequent cross linker was obvious, and the final protein molecular size had played an important role in bonding strength and water resistance of Jatropha curcasprotein based adhesives. Ca(OH)2/NaOH treatment for Jatropha curcas protein was useless. NaOH Urea treatment for Jatropha curcas protein, performance of Jatropha curcas protein based adhesives barely met the national standards but cross linker CRO and pMDI. NaHSO3 treatment for Jatropha curcas protein, then adding the same amount of cross linker such as KF, CRO and pMDI, bonding performance and water resistance of Jatropha curcas protein based adhesives improved obviously. After treated by NaHSO3, Jatropha curcas protein could remain protein macromolecular structure as far as possible, and then the water resistance of Jatropha curcas protein based adhesives was stronger than other two treatments.