三聚氰胺改性脲醛树脂胶粘剂对高密度纤维板性能的影响  

Effect of melamine modified urea formaldehyde resin on properties of high density fiberboard

作　　者：安超 李天华 覃掌吉 卿彦[2] 李新功[2] 吴义强[2] 刘明[2] An Chao;Li Tianhua;Qin Zhangji;Qing Yan;Li Xingong;Wu Yiqiang;Liu Ming(Guangxi Fenglin Wood Industry Group Co.,Ltd.,Nanning 530221,Guangxi,China;Central South University of Forestry and Technology,Changsha 410004,Hunan,China)

机构地区：[1]广西丰林木业集团股份有限公司,广西南宁530221 [2]中南林业科技大学,湖南长沙410004

出　　处：《中国胶粘剂》2021年第4期30-34,共5页China Adhesives

基　　金：广西科技重大专项(桂科AA17204087-18);林业科学技术推广项目([2019]23);湖南省教育厅优秀青年项目(18B181);中南林业科技大学引进人才项目(2018YJ007)。

摘　　要：探索了不同三聚氰胺用量改性对低物质的量比脲醛树脂胶粘剂的理化性质及其压制的高密度纤维板物理力学性能和防水性能的影响,并通过测定不同三聚氰胺用量改性的脲醛树脂胶粘剂的黏度、固含量、固化时间、游离甲醛含量、高密度纤维板的静曲强度、内结合强度和吸水厚度膨胀率,研究其性能。研究结果表明:当三聚氰胺用量由1%增加到10%时,脲醛树脂的固化时间由129 s延长至195 s,游离甲醛含量则先升高后降低;当三聚氰胺用量在6%以内时,对高密度纤维板的物理力学性能无显著影响,但板材的防水性能与三聚氰胺用量呈线性增强关系。本研究为防水、防潮等高性能高密度纤维板的制造提供支持。The effect of different melamine content modification on the physical and chemical properties of low mass ratio urea formaldehyde resin adhesive and the physical and mechanical properties and waterproof properties of the pressed high density fiberboard were investigated. The viscosity,solid content,curing time,free formaldehyde content of the urea formaldehyde resin adhesive modified with different melamine contents,and static bending strength,internal bonding strength and thickness swelling rate of high density fiberboard were measured to study its performance. The research results showed that when the melamine content increased from 1% to 10%,the curing time of urea formaldehyde resin increased from 129 s to 195 s,and the free formaldehyde content increased first and then decreased. When the melamine content was within 6%,there was no significant influence on the physical and mechanical properties of the high density fiberboard,but the waterproof performance of the board had the linear relationship with the melamine content. This study provided support for the manufacture of highperformance high-density fiberboard such as waterproof and moisture-proof.

关 键 词：胶粘剂 高密度纤维板 三聚氰胺 甲醛 

分 类 号：TQ433[化学工程]