Study on Synthesis Technology of Defatted Soybean Protein/ Sucrose-Ammonium Dihydrogen Phosphate Adhesive

ZHANG Xue; LIN Qiumu; ZHAO Zhongyuan

doi:10.12326/j.2096-9694.2023004

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Study on Synthesis Technology of Defatted Soybean Protein/ Sucrose-Ammonium Dihydrogen Phosphate Adhesive
1.College of Furnishings and Industrial Design，Nanjing Forestry University，Nanjing 210037，Jiangsu，China
Vol. 37, Issue 4, Pages: 28-35(2023)
DOI： 10.12326/j.2096-9694.2023004

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张雪,林秋沐,赵中元.脱脂大豆蛋白/蔗糖-磷酸二氢铵胶黏剂的合成工艺研究[J].木材科学与技术,2023,37(04):28-35.

ZHANG Xue,LIN Qiumu,ZHAO Zhongyuan.Study on Synthesis Technology of Defatted Soybean Protein/ Sucrose-Ammonium Dihydrogen Phosphate Adhesive[J].Chinese Journal of Wood Science and Technology,2023,37(04):28-35.
张雪,林秋沐,赵中元.脱脂大豆蛋白/蔗糖-磷酸二氢铵胶黏剂的合成工艺研究[J].木材科学与技术,2023,37(04):28-35. DOI： 10.12326/j.2096-9694.2023004.

ZHANG Xue,LIN Qiumu,ZHAO Zhongyuan.Study on Synthesis Technology of Defatted Soybean Protein/ Sucrose-Ammonium Dihydrogen Phosphate Adhesive[J].Chinese Journal of Wood Science and Technology,2023,37(04):28-35. DOI： 10.12326/j.2096-9694.2023004.

摘要

以脱脂大豆蛋白（defatted soy protein，DSF）、蔗糖（Sucrose）、磷酸二氢铵（ammonium dihydrogen phosphate，ADP）为主要原料，制备一种新型大豆蛋白-蔗糖基胶黏剂（DSF/SADP），探讨固体物质质量分数、脱脂大豆蛋白与蔗糖-磷酸二氢铵糖液的质量比、合成温度及合成时间对胶黏剂胶合强度的影响，分析胶黏剂的热固化行为与固化机理。在胶黏剂的优化合成工艺：固体物质质量分数70%、脱脂大豆蛋白与蔗糖-磷酸二氢铵溶液质量比1∶4、合成温度70 ℃、合成时间3 h的条件下，热压温度为170 ℃，热压时间为7 min时，制备三层胶合板的湿胶合强度为0.99 MPa。胶黏剂不溶解率、热重分析和差示扫描量热分析的结果显示，DSF/SADP胶黏剂在热降解过程中可能伴随着缩聚反应的发生；红外光谱测试和微观形貌观察结果显示，5-羟甲基糠醛或其衍生物参与交联反应，形成的C-O-C是固化后聚合物的主要连接键；加入DSF的胶黏剂固化后表面孔洞直径减小，表面更加致密。

Abstract

A novel soybean protein-sucrose based adhesive (DSF/SADP) was made of defatted soybean protein (DSF), sucrose, and ammonium dihydrogen phosphate (ADP). The effects of mass of solid components, the mass ratio of defatted soybean protein to sucrose and ammonium dihydrogen phosphate solution, the synthesis temperature, and the synthesis time on the bonding strength of the adhesive were investigated. The optimum synthesis process of the adhesive was as follows: mass of solid components of 70%, the mass ratio of defatted soybean protein to sucrose and ammonium dihydrogen phosphate 1∶4, the synthesis temperature of 70 ℃, the synthesis time of 3 h, when the hot pressing temperature was 170 ℃ and the hot pressing time was 7 minutes, the wet bonding strength of the three-layer plywood was 0.99 MPa. The results of thermal gravimetric analysis (TG) and differential scanning calorimetry (DSC) showed that DSF/SADP adhesives possibly accompanied by polycondensation during thermal degradation. The results of infrared spectroscopy and microscopic morphology showed that 5-hydroxymethylfurfural or its derivatives participated in the cross-linking reaction; and the formed C-O-C was the main bond of the cured polymer; the cured adhesive with DSF reduces the diameter of the surface holes and provides a denser surface.

关键词

大豆蛋白蔗糖磷酸二氢铵胶黏剂胶合板

Keywords

soy proteinsucroseammonium dihydrogen phosphateadhesiveplywood

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