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Investigation of epoxy-based wood adhesives

机译:环氧基木粘合剂的研究

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Cold-set epoxy-based wood adhesives were investigated for production of exterior plywood. Effective adhesives were composed of bisphenol A diglycidyl ether (BPADGE), polyamidoamine (PAA), and polyethylenimine (PEI). Three-ply plywood panels were prepared with BPADGE-PAA-PEI adhesives and evaluated for their strengths and water resistance in accordance with a standard for exterior plywood. The effect of BPADGE/(PAA + PEI) weight ratio, PAA/PEI weight ratio, the mixing time for preparing the adhesive, and the pressing time for making plywood panels on the water resistance and the shear strengths of the plywood panels was investigated. The pot life of the adhesive was also measured. Plywood panels made with the BPADGE-PAA-PEI adhesives met the industrial requirements for exterior applications. Adhesion mechanisms are discussed in detail. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47741.
机译:研究了冷套环氧树脂的木材粘合剂,用于生产外部胶合板。 有效粘合剂由双酚A二缩水甘油醚(BPADGE),聚酰胺胺(PAA)和聚乙烯亚胺(PEI)组成。 用BPADGE-PAA-PEI粘合剂制备三层胶合板板,并根据外部胶合板标准评价它们的强度和耐水性。 研究了BPADGE /(PAA + PEI)重量比,PAA / PEI重量比,制备粘合剂的混合时间,以及制备胶合板电阻上的胶合板和胶合板板的剪切强度的压制时间。 还测量粘合剂的罐寿命。 用BPADGE-PAA-PEI粘合剂制造的胶合板面板符合外部应用的工业要求。 详细讨论了粘合机构。 (c)2019 Wiley期刊,Inc.J.Phill。 聚合物。 SCI。 2019,136,4741。

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