地板基材用MUF树脂胶聚合过程研究  

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

作　　者：胡岚方 施娟娟[5] 张伟[1,2,3,4] 赵临五[1,2,3,4] 王春鹏[1,2,3,4,6] 储富祥[1,2,3,4,6] 

机构地区：[1]中国林业科学研究院林产化学工业研究所 [2]生物质化学利用国家工程实验室 [3]国家林业局林产化学工程重点开放性实验室 [4]江苏省生物质能源与材料重点实验室,江苏南京210042 [5]南京林业大学化学工程学院,江苏南京210037 [6]中国林业科学研究院林业新技术研究所,北京100091

出　　处：《生物质化学工程》2014年第2期29-34,共6页Biomass Chemical Engineering

基　　金：农业科技成果转化资金项目(2012GB24320579)

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）。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）.

关 键 词：MUF树脂 红外光谱 13C NMR 

分 类 号：TQ433.431[化学工程]