Co-crosslinking of Soybean Adhesive Blending with Urea-Epoxy-Polyamidoamine Epichlorohydrin Resin

Bo SUN; Yu-fei KAN; Zhen-hua GAO

doi:10.12326/j.2096-9694.2021094

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Co-crosslinking of Soybean Adhesive Blending with Urea-Epoxy-Polyamidoamine Epichlorohydrin Resin
1.College of Material Science and Engineering，Northeast Forestry University，Harbin 150040，Heilongjiang，China
Vol. 36, Issue 2, Pages: 54-59(2022)
DOI： 10.12326/j.2096-9694.2021094

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孙博,阚雨菲,高振华.HN-PAE树脂对大豆蛋白胶黏剂的共交联改性研究[J].木材科学与技术,2022,36(02):54-59.

SUN Bo,KAN Yu-fei,GAO Zhen-hua.Co-crosslinking of Soybean Adhesive Blending with Urea-Epoxy-Polyamidoamine Epichlorohydrin Resin[J].Chinese Journal of Wood Science and Technology,2022,36(02):54-59.
孙博,阚雨菲,高振华.HN-PAE树脂对大豆蛋白胶黏剂的共交联改性研究[J].木材科学与技术,2022,36(02):54-59. DOI： 10.12326/j.2096-9694.2021094.

SUN Bo,KAN Yu-fei,GAO Zhen-hua.Co-crosslinking of Soybean Adhesive Blending with Urea-Epoxy-Polyamidoamine Epichlorohydrin Resin[J].Chinese Journal of Wood Science and Technology,2022,36(02):54-59. DOI： 10.12326/j.2096-9694.2021094.

摘要

采用低成本、富含活性基团的无甲醛尿素-环氧树脂（代号为HN）为共交联改性剂，与交联剂聚酰胺多胺-环氧氯丙烷（PAE）树脂共混制备大豆蛋白胶。红外光谱（FTIR）表征与热重分析表明：HN树脂能与PAE树脂有效共交联，同时HN-PAE树脂能与大豆蛋白上的活性基团反应，提高大豆蛋白胶的热稳定性。通过胶合板性能测试对HN树脂用量和豆粉用量进行配方优化，将HN-PAE复合树脂溶液（HN树脂质量分数70%）稀释至质量分数为6%，豆粉相对用量为30%~35%时，制备的II类胶合板的胶合强度满足GB/T 9846—2015《普通胶合板》的要求。

Abstract

A low-cost, formaldehyde-free, and reactive incremental modifier, the urea-epoxy resin(code name: HN), which was made from urea and epoxy monomer, was blended with the crosslinker polyamidoamine epichlorohydrin (PAE) resin to produce the soybean adhesive. FTIR and TGA analyses indicated that HN resin effectively co-crosslink with PAE resin. The blended HN-PAE resin react with active groups from the soybean protein, by which improved the thermal stability of the soybean adhesive. Based on the plywood property evaluation, the preferable content ratio of resin HN and soybean flour were optimized, when the HN-PAE resin(HN mass fraction was 70%) solution was diluted to 6%, and the relative dosage of soybean flour was 30%~35%, the bonding strength of Type II plywood made with the optimized soybean adhesive fully met the requirements of China National Standard GB/T 9846—2015",Plywood for general use,".

关键词

尿素-环氧树脂共交联改性大豆蛋白胶黏剂胶合性能

Keywords

urea-epoxy resinco-crosslinkingsoybean adhesivebonding strength

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