Page 216 - 《精细化工》2021年第1期

第 38 卷第 1 期 精 细 化 工 Vol.38, No.1
202 1 年 1 月 FINE CHEMICALS Jan. 2021

粘合剂
不同木质素磺酸钠对豆粕胶黏剂性能的影响

3
李 宁 1,2 ，谷利敏 ，王春鹏 1,2 ，储富祥 1,2 ，许玉芝 1,2*
（1. 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，江苏省林业资源高
效加工利用协同创新中心，国家林业和草原局林产化学工程重点实验室，生物质化学利用国家工程实验室，
江苏 南京 210042；2. 南京林业大学 林业资源高效加工利用协同创新中心，江苏 南京 210037；3. 河
南省化工研究所有限责任公司，河南 郑州 450052）

摘要：通过 FTIR、元素分析、GPC 对 4 种不同来源的木质素磺酸钠进行物理化学性质分析，并将其与水性
聚酰胺协同改性豆粕胶黏剂（简称豆粕胶），利用测试接触角、剪切黏度和湿态胶合强度考察改性前后胶黏
–1
剂的浸润性、流变特性以及所得胶合板的胶合性能。红外谱图分析表明，在 1065 cm 附近出现了磺酸基或
磺甲基中 S==O 的伸缩振动吸收峰，证明木质素经过磺化反应或磺甲基化反应得到木质素磺酸钠；木质素
磺酸钠中磺酸基含量越高，经其改性的豆粕胶的零剪切黏度越低且在木材表面的润湿性越好；豆粕胶黏剂
与杨木单板的接触角从未改性的 95°降到改性后的 61°；与水性聚酰胺协同改性后的豆粕胶制得胶合板的湿
态胶合强度达到 0.92 MPa，合格率为 100%，满足国家Ⅱ类胶合板的标准要求（胶合强度≥0.70 MPa，合格
率≥90%）。
关键词：木质素磺酸钠；豆粕胶；润湿性；流变性能；湿态胶合强度
中图分类号：TQ432.73 文献标识码：A 文章编号：1003-5214 (2021) 01-0206-06

Effects of different sodium lignosulfonate on the properties of
soybean meal adhesives

3
1,2
1,2
1,2
LI Ning , GU Limin , WANG Chunpeng , CHU Fuxiang , XU Yuzhi 1,2*
（1. Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Jiangsu Provincial Key
Laboratory of Biomass Energy and Materials, Jiangsu Collaborative Innovation Center for Efficient Processing and
Utilization of Forestry Resources, Key Laboratory of Forestry Chemical Engineering of State Forestry and Grassland
Bureau, National Engineering Laboratory of Biomass Chemical Utilization, Nanjing 210042, Jiangsu, China;
2. Collaborative Innovation Center for Efficient Processing and Utilization of Forest Resources, Nanjing Forestry
University, Nanjing 210037, Jiangsu, China; 3. Henan Chemical Industry Research Institute Co., Ltd., Zhengzhou
450052, Henan, China）

Abstract: Physicochemical properties of four different sodium lignosulfonates were studied by FTIR,
elemental analysis and GPC. Subsequently, these lignosulfonates and water-based polyamide were used to
synergistically modify soybean adhesives. Then, the wettability and rheological property of the adhesive
before and after modification, as well as the wet bonding strength of the resulting plywood were
investigated by measuring the contact angle, shear viscosity and wet bonding strength. FTIR results showed
that the S==O stretching vibration absorption peak of sulfonic acid group or sulfomethyl group appeared
–1
near 1065 cm , indicating that sodium lignosufonate was successfully obtained by sulfonation or
sulfomethylation. The higher the content of sulfonic group in sodium lignosulfonate, the lower the zero
shear viscosity of modified soybean meal adhesive and the better the wettability on the wood surface. The
contact angle decreased from 95° to 61°. The wet bonding strength of the prepared plywood reached 0.92 MPa
and the pass rate was 100%, which met the national standard for type Ⅱ plywood (≥0.70 MPa, ≥90%).
Key words: sodium lignosulfonate; soybean adhesive; wettability; rheological properties; wet bonding strength

收稿日期：2020-06-15; 定用日期：2020-09-24; DOI: 10.13550/j.jxhg.20200519
基金项目：国家自然科学基金（31770604）
作者简介：李 宁（1993—），女，硕士生。联系人：许玉芝（1974—），女，副研究员，E-mail：xuyuzhi @icifp.cn。