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生物质化学工程 ›› 2014, Vol. 48 ›› Issue (2): 29-34.doi: 10.3969/j.issn.1673-5854.2014.02.006

• 研究报告 • 上一篇    下一篇

地板基材用MUF树脂胶聚合过程研究

胡岚方1, 施娟娟2, 张伟1, 赵临五1, 王春鹏1,3, 储富祥1,3   

  1. 1. 中国林业科学研究院 林产化学工业研究所; 生物质化学利用国家工程实验室; 国家林业局 林产化学工程重点 开放性实验室; 江苏省生物质能源与材料重点实验室, 江苏 南京 210042;
    2. 南京林业大学 化学工程学院, 江苏 南京 210037;
    3. 中国林业科学研究院 林业新技术研究所, 北京 100091
  • 收稿日期:2013-08-28 出版日期:2014-03-30 发布日期:2014-05-29
  • 通讯作者: 储富祥(1963-),男,研究员,博士,博士生导师,研究领域:胶黏剂化学;E-mail:chufuxiang@caf.ac.cn。 E-mail:chufuxiang@caf.ac.cn
  • 作者简介:胡岚方(1989-),男,湖北荆州人,硕士生,研究方向:木材胶黏剂的研究
  • 基金资助:
    农业科技成果转化资金项目(2012GB24320579)

Study on the Polymerization Process of Melamine Modified Urea-formaldehyde Resin for Floor Substrate

HU Lan-fang1, SHI Juan-juan2, ZHANG Wei1, ZHAO Lin-wu1, WANG Chun-peng1,3, CHU Fu-xiang1,3   

  1. 1. Institute of Chemical Industry of Forest Products, CAF; National Engineering Lab. for Biomass Chemical Utilization; Key and Open Lab. of Forest Chemical Engineering, SFA; Key Lab. of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China;
    2. College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China;
    3. Institute of New Technology of Forestry, CAF, Beijing 100091, China
  • Received:2013-08-28 Online:2014-03-30 Published:2014-05-29

摘要: 以甲醛(F)、尿素(U)、三聚氰胺(M)为原料,采用弱碱—弱酸—弱碱工艺合成了三聚氰胺-尿素-甲醛(MUF)共聚树脂胶,配方中F与U物质的量之比为(1.2~1.5):1,F与(U+M)物质的量比为(1.1~1.2):1。在不同的反应阶段取样,采用IR和13C NMR对过程中所取样品进行了分析。结果表明,反应开始的碱性阶段主要生成二羟甲基三聚氰胺,在弱酸性阶段缩聚反应时分子间以醚键和亚甲基键联接为主。用反应最终产物压制的杨木胶合板,胶合强度1.07 MPa,甲醛释放量0.38 mg/L,浸渍剥离试验无剥离,达到E0级,胶合强度达到Ⅱ类板的要求(0.7 MPa)。

关键词: MUF树脂, 红外光谱, 13C NMR

Abstract: Melamine-urea-formaldehyde resin was synthesized by using melamine, urea and formaldehyde as raw materials. The molar ratio of F and U was (1.2-1.5):1, and the molar ratio of F and (U+M) was (1.1-1.2):1 in MUF resin. Samples in different period of reaction were analyzed by FT-IR and 13C NMR. The results showed that the main products were dimethylol melamine at the beginning of the reaction and connected mainly by methyl ether linkage and methylene in the weak acid stage. The plywood manufactured with this MUF resin conformed E0 degree required by standard with the bonding strength of 1.07 MPa and formaldehyde emission of 0.38 mg/L. The bond strength of the plywood could satisfy the requirement of type Ⅱ plywood (0.7 MPa).

Key words: MUF resin, infrared spectroscopy, 13C NMR

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