| 稳定剂对大豆蛋白基胶黏剂性能的影响 |
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| 引用本文： | 吴志刚,雷洪,曹明,席雪冬,廖晶晶,杜官本.稳定剂对大豆蛋白基胶黏剂性能的影响[J].福建林学院学报,2016(1):98-103. |
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| 作者姓名： | 吴志刚 雷洪 曹明 席雪冬 廖晶晶 杜官本 |
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| 作者单位： | 1. 西南林业大学云南省木材胶黏剂及胶合制品重点实验室，云南昆明650224; 北京林业大学材料科学与技术学院，北京100083;2. 西南林业大学云南省木材胶黏剂及胶合制品重点实验室,云南昆明,650224;3. 西南林业大学云南省木材胶黏剂及胶合制品重点实验室，云南昆明650224; 南京林业大学材料科学与工程学院，江苏南京210037 |
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| 基金项目： | “十二五”国家科技支撑计划项目(2012BAD24B03)；云南省应用基础研究重点项目(2013FA038)；云南省中青年学术带头人后备人才项目(2011HB024)；林业公益性行业科研专项(201304505)。 |
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| 摘 要： | 本研究首先选用NaOH对大豆蛋白进行降解处理，研究了降解处理条件对降解产物黏度和甲醛反应能力的影响。在NaOH降解大豆蛋白基础之上，再选用甲醛、乙二醛、戊二醛稳定降解的大豆蛋白液，并制备刨花板，同时对刨花板相关性能进行研究。研究结果表明：（1）大豆蛋白最佳降解工艺为加碱量9％，处理温度90℃，处理时间3 h。（2）甲醛、乙二醛、戊二醛都能显著提高豆胶的储存稳定性，甲醛稳定蛋白液效率高，固化反应活化能低，刨花板内结合强度最高，考虑到甲醛稳定剂的毒性，应尽量减少使用；乙二醛稳定蛋白液效率高，固化反应活化能高，刨花板内结合强度最低，所以不适合做蛋白质降解液的稳定剂；戊二醛稳定蛋白液效率不高，固化反应活化能低，刨花板内结合强度基本达标，适合做蛋白质降解液的稳定剂，刨花板的性能可以通过改进后期的稳定工艺或优选交联剂加以改性。
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| 关 键 词： | 大豆蛋白 降解 豆胶 稳定剂 刨花板 |
Improving particle board quality with alkaline stabilized syo pro tein-bas ed adhesive |
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| Abstract: | Low adhesiveness and water resistance has restrained the application of soy protein-based adhesive ( SPA) in particle board industry.In order to improve SPA quality with Alkali (NaOH), the amount of NaOH, treatment duration and temperature were investigated.Then viscosity of the degraded soy protein and its reaction ability with formaldehyde were measured.Furthermore, formaldehyde, glyoxal, and glutaraldehyde were added to stabilize alkaline-degraded soy mixture to manufacture particle board with the optimal performance.Results showed that the optimal protein disruption condition was addition of 9%NaOH for three hours at 90℃.Particle boards made from three stabilizers all met the standard of particle board.FT-IR and DSC curves proved that formal-dehyde had the best quality performance with low curing reaction activation energy but its application should be under precautious consideration due to the hazardousness to human.Glyoxal was able to stabilize protein effectively.But the high reaction activation energy resulted in low internal bonding strength.Glutaraldehyde had the best overall performance with the only drawback of least stabilizing-protein capability.This study adds knowledge to the searching of optimal stabilizer and cross-linker agent for particle board. |
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| Keywords: | soy protein degradation soy protein-based adhesive stabilizer particle board |
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