改性淀粉胶黏剂的研制

刘景宏; 林巧佳; 杨桂娣

doi:10.19455/j.mcgy.2004.04.003

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改性淀粉胶黏剂的研制
Study on Modifying Starch Adhesive for Plywood Manufacturing
1. 福建农林大学材料工程学院
2. 福建农林大学材料工程学院,福州,350002
2004年第4期页码：8-11
DOI： 10.19455/j.mcgy.2004.04.003

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[1]刘景宏,林巧佳,杨桂娣.改性淀粉胶黏剂的研制[J].木材工业,2004(04):8-11.

LIU Jing-hong, LIN Qiao-jia, YANG Gui-di. Study on Modifying Starch Adhesive for Plywood Manufacturing[J]. China Wood Industry, 2004,(4):8-11.
[1]刘景宏,林巧佳,杨桂娣.改性淀粉胶黏剂的研制[J].木材工业,2004(04):8-11. DOI： 10.19455/j.mcgy.2004.04.003.

LIU Jing-hong, LIN Qiao-jia, YANG Gui-di. Study on Modifying Starch Adhesive for Plywood Manufacturing[J]. China Wood Industry, 2004,(4):8-11. DOI： 10.19455/j.mcgy.2004.04.003.

摘要

利用氧化、缩聚、交联等方法可提高淀粉胶黏剂的耐水性。以次氯酸钠、聚乙烯醇、丙烯酰胺、甲苯二异氰酸酯用量为变量,通过正交试验确定的最佳制胶配方为:在100g玉米淀粉中添加次氯酸钠溶液30mL、聚乙烯醇4g、丙烯酰胺24g及主剂重10%的甲苯二异氰酸酯。测试结果表明,按此配方制得的淀粉胶黏剂的胶合性能指标、成本等与UF树脂胶相当,可替代UF类树脂,解决产品中甲醛气体的释放问题。

Abstract

A chemical modification by oxidation experiment was designed to improve the water （resistance） of starch adhesive. The theory and technology of the process, and optimum level of （concentration） determined by orthogonal experimentation, are described in this paper. The starch （adhesive） was modified with 100 g. of maize starch, 30 mL sodium hypochlorite, 4 g. polyvinyl alcohol, 24 g. acrylamide, and 10% toluylene diisocyanate based on the weight of the polymeric starch adhesive. The test results showed that its wet bond strength for plywood was able to meet the （requirements） for type-Ⅱ plywood in the National Standard GB 9846.4-88. Moreover, the cost of modified starch adhesive was comparable to common UF resin adhesive. This study provided an （approach） to manufacturing plywood without formaldehyde （emission.）