森林与环境学报2017，Vol.37Issue(1)：124-128,5.DOI:10.13324/j.cnki.jfcf.2017.01.020
反应原料用量对MUF共缩聚树脂分子量分布的影响
The effect of reaction material content on the molecular distribution of MUF co-condensation resin
摘要
Abstract
Urea-formaldehyde resin modified with melamine is a common method adopted widely in the industry. Melamine can effectively modify the water resistance and weather durability of urea-formaldehyde resin, and reduce the content of free formaldehyde. However, during the resin application, it is very important for melamine to take part in urea-formaldehyde resin reaction and form effective co-condensation composition or not. Based on above, a series of MUF resins are synthesized with different melamine and urea mass ratio under the same final F ∶( M+U) and the first stage F ∶( M1+U1 ) molar ratio condition. And the molecular distribution of different resins are represented by using electrospray ionization mass spectrometry ( ESI-MS) . By comparing figures of different samples, the results showed that different reaction material content has a great influence on the composition, molecular distribution and co-condensation content of co-condensation resin. And when the mass amount of melamine added to 40%, the molecular distribution of MUF resin changed qualitatively and co-condensation composition content also had significant increase. Therefore, under this experiment conditions, adding melamine content can effectively promote the co-condensation reaction, meanwhile, the formation of co-condensation resin requires melamine content at least about 40%.关键词
电喷雾电离质谱/MUF共缩聚树脂/分子量分布Key words
electrospray ionization mass spectrometry( ESI-MS)/MUF co-codensation resin/molecular distribution分类
化学化工引用本文复制引用
王辉,李吏详,刘斯宁,杜官本..反应原料用量对MUF共缩聚树脂分子量分布的影响[J].森林与环境学报,2017,37(1):124-128,5.基金项目
云南省教育厅科学研究基金项目(2014Y318) （2014Y318）
