文献类型：期刊文献

中文题名：木质素-苯酚-甲醛-尿素树脂胶黏剂的制备与应用

英文题名：Preparation and Application of Lignin-Phenol-Formaldehyde-Urea Resin Adhesive

作者：朱智伟[1] 常健龙[1] 詹天翼[1] 彭辉[1] 高士帅[2] 吕建雄[1]

第一作者：朱智伟

机构：[1]南京林业大学材料科学与工程学院,江苏南京210037;[2]中国林业科学研究院,林产化学工业研究所,江苏省生物质能源与材料重点实验室,国家林业和草原局林产化学工程重点实验室,林木生物质低碳高效利用国家工程研究中心,江苏南京210042

年份：2025

卷号：62

期号：8

起止页码：27-33

中文期刊名：林产工业

外文期刊名：China Forest Products Industry

收录：;北大核心:【北大核心2023】；

基金：国家自然科学基金(32201508)。

语种：中文

中文关键词：木质素;共缩聚反应;胶合板;耐沸水胶合强度;甲醛释放量

外文关键词：Lignin;Co-polycondensation reaction;Plywood;Boiling water glue strength;Formaldehyde emissions

分类号：TS6;TS396

摘要：以工业碱木质素(L)为原料,通过与苯酚(P)、尿素(U)和甲醛(F)共缩聚反应制备了木质素基胶黏剂(LPUs),考察了木质素和尿素用量对LPUs树脂固化性能、热稳定性能、胶合性能和甲醛释放量的影响。结果表明:不同木质素和尿素用量并未改变LPUs树脂分子链的主体结构和排列取向性。随着木质素用量的上升,LPUs树脂的热稳定性先增加后降低;而尿素用量的增加,则会降低LPUs树脂的热稳定性。LPUs树脂具有耐沸水和低甲醛释放的特点。随着LPUs树脂中木质素和尿素用量的增加,制备胶合板的耐沸水胶合强度均呈现出先增加后降低的趋势。木质素用量过高或过低都会影响LPUs树脂的热稳定性。
In this paper,lignin-based adhesives(LPUs)were prepared by co-condensation with phenol(P),urea(U)and formaldehyde(F)using industrial alkali lignin(L)as raw material.The effects of lignin and urea dosages on the curing performance,thermal stability,gluing performance and formaldehyde emission of LPUs resin were investigated.The results showed that the main structure and arrangement orientation of the resin molecular chain of LPUs did not changed by different lignin and urea dosages.With the increasing of lignin dosage,the thermal stability of LPUs resin first increased and then decreased.The increase in urea dosage would reduce the thermal stability of LPUs resin.LPUs resins were resistant to boiling water and low formaldehyde emissions.With the increasing of lignin and urea,the gluing strength of plywood prepared with LPUs resin showed a trend of first increasing and then decreasing.