文献类型：期刊文献

中文题名：不同木质素磺酸钠对豆粕胶黏剂性能的影响

英文题名：Effects of different sodium lignosulfonate on the properties of soybean meal adhesives

作者：李宁[1,2] 谷利敏[3] 王春鹏[1,2] 储富祥[1,2] 许玉芝[1,2]

第一作者：李宁

通信作者：Xu, Yuzhi

机构：[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

年份：2021

卷号：38

期号：1

起止页码：206-211

中文期刊名：精细化工

外文期刊名：Fine Chemicals

收录：CSTPCD;;EI(收录号：20210409829043);Scopus;北大核心:【北大核心2020】；CSCD:【CSCD2021_2022】；

基金：国家自然科学基金(31770604)。

语种：中文

中文关键词：木质素磺酸钠;豆粕胶;润湿性;流变性能;湿态胶合强度

外文关键词：sodium lignosulfonate;soybean adhesive;wettability;rheological properties;wet bonding strength

分类号：TQ432.73

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-1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%)。
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 near 1065 cm-1,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 typeⅡplywood(≥0.70 MPa,≥90%).