不同摩尔比脲醛树脂的制备及其在刨花板中的运用  

Preparation of Urea Formaldehyde Resin by Different Processes and Its Application in Particleboard

作　　者：潘婷 李匀曦 李欣欣 杨守禄 唐运表 无 PAN Ting;LI Yunxi;LI Xingxing;YANG Shoulu;TANG Yunbiao;无(College of Materials Science and Engineering,Central South University of Forestry and Technology,Changsha Hunan 410000,China;Guangxi Fenglin Wood Industry Group Co.,Ltd.,Nanning Guangxi 530000,China;Guizhou Academy of Forestry,Guiyang Guizhou 550005,China)

机构地区：[1]中南林业科技大学材料科学与工程学院,湖南长沙41000 [2]广西丰林木业集团有限公司,广西南宁530000 [3]贵州省林业科学研究院,贵州贵阳550005

出　　处：《当代化工》2024年第4期851-854,859,共5页Contemporary Chemical Industry

基　　金：中央引导地方科技发展专项资金项目(桂科ZY20198026);南宁市创新创业领军人才“邕江计划”资助项目(202106);南宁市优秀青年科技创新创业人才培育项目(RC20220203);林业科学技术推广项目([2019]23);贵州省林业科研课题(黔林科合[2023]02号);中央财政林业改革发展资金项目(贵[2023]TG23号)

摘　　要：为了探究不同F/U摩尔比在同一制备工艺下对脲醛树脂的影响,采用0.9、1.0、1.05、1.1不同摩尔比分别制备脲醛树脂,以此分析脲醛树脂的理化性能,同时为了更好地探索脲醛树脂的应用性,制备刨花板并分析刨花板力学性能。结果表明:1.05摩尔比条件下综合性能最佳。在最佳工艺下制备脲醛树脂游离甲醛质量分数为0.21%,刨花板板材MOR与MOE为14.07MPa和1933MPa,IB为0.48MPa,甲醛释放量为2.1mg(100g)^(-1),所制备刨花板都满足国家标准P2型,该研究为脲醛树脂的制备工艺以及刨花板实际应用生产提供了科学依据.In order to explore the impact of different F/U molar ratios on UF resins under the same preparation process,four different molar ratios of 0.9,1.0,1.05 and 1.1 were used to prepare UF resins to analyze the physical and chemical properties of UF resins.In order to better explore the applicability of UF resins,particleboards were prepared and their mechanical properties were analyzed.The results showed that the comprehensive performance was the best at the molar ratio of 1.05.Under the optimal process,the free formaldehyde mass fraction of UF resin was 0.21%,and the MOR and MOE of particleboard were 14.07 MPa,1933 MPa,IB was 0.48 MPa,and the formaldehyde emission was 2.1 mg:(100 g)'.The prepared particleboard met the national standard P2 type.This study provides a scientific basis for the preparation process of UF resin and the practical application and production of particleboard.

关 键 词：胶黏剂 摩尔比 脲醛树脂 刨花板 

分 类 号：TQ433.431[化学工程]