单板含水率对湿固化异氰酸酯胶性能的影响

郑志锋; 黄元波; 顾继友; 李海英; 张彦华

doi:10.19455/j.mcgy.2010.03.006

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单板含水率对湿固化异氰酸酯胶性能的影响
Effects of Wood Moisture Content on Isocyanate-Wood Bonding
1. 西南林学院木质科学与装饰工程学院
2. 西南山地森林资源保育与利用省部共建教育部重点实验室
3. 东北林业大学材料科学与工程学院
2010年24卷第3期页码：16-18
DOI： 10.19455/j.mcgy.2010.03.006

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[1]郑志锋,黄元波,顾继友,李海英,张彦华.单板含水率对湿固化异氰酸酯胶性能的影响[J].木材工业,2010,24(03):16-18.

ZHENG Zhi-feng1, HUANG Yuan-bo1, GU Ji-you2, et al. Effects of Wood Moisture Content on Isocyanate-Wood Bonding[J]. China Wood Industry, 2010,24(3):16-18.
[1]郑志锋,黄元波,顾继友,李海英,张彦华.单板含水率对湿固化异氰酸酯胶性能的影响[J].木材工业,2010,24(03):16-18. DOI： 10.19455/j.mcgy.2010.03.006.

ZHENG Zhi-feng1, HUANG Yuan-bo1, GU Ji-you2, et al. Effects of Wood Moisture Content on Isocyanate-Wood Bonding[J]. China Wood Industry, 2010,24(3):16-18. DOI： 10.19455/j.mcgy.2010.03.006.

摘要

研究了木材含水率对湿固化异氰酸酯胶黏剂（YQJ-S）性能的影响。结果表明,木材含水率越高,YQJ-S润湿性和渗透性越好,且固化反应起始温度越低。因YQJ-S固化反应活化能较低,可在室温下与高含水率木材发生固化反应。当木材含水率为70%时,YQJ-S胶接强度最大。

Abstract

The authors studied the effect of wood moisture content on properties of moisture-curing isocyanate adhesive（YQJ-S）.Results showed that the adhesive curing reaction increased as the wood moisture content increased.Furthermore,the curing reaction could also be started at lower temperatures with higher moisture contents.Because the curing activation energy of the YQJ-S adhesive was 84.25 kJ·mol——1-,the adhesive could even react with high moisture content wood at room temperature.They determined that the bonding strength of the YQJ-S adhesive reached a maximum when the wood moisture content was 70%.