环保型低成本脲醛树脂胶的制备  

Preparation of Environmental-friendly Urea-formaldehyde Resin with Low Cost

作　　者：孙翠红[1] 曹忠富 古绪鹏[1] 

机构地区：[1]安徽工业大学化学与化工学院,安徽马鞍山243002 [2]马鞍山采石矶涂料有限公司,安徽马鞍山243000

出　　处：《安徽工业大学学报（自然科学版）》2008年第1期46-49,共4页Journal of Anhui University of Technology（Natural Science）

摘　　要：采用强酸-弱酸-弱碱的合成工艺,通过加大催化剂的用量,分批缓慢加入尿素,提高强酸性介质缩聚时反应物料的摩尔比,使缩聚反应得以在中低温条件下平稳地进行,并添加少量聚乙烯醇作改性剂,制备出了低毒低成本脲醛树脂胶,达到了既节约能源、降低毒性又能提高树脂综合性能的目的。Urea-formaldehyde resin with low toxicity and cost was obtained by using a technology of strong acidity-weak acidity-weak alkalescence. It was modified by adding a little of polyvinyl alcohol. Polycondensation reaction could be reposefully processed at mild low temperature. Through increasing the dosage of activator, adding urea slowly in portioning, and improving the reactants＇ molar ratio of polycondensation in strong acidity medium, the targets of economizing energy sources, reducing toxicity and improving synthetic performance of resin were achieved.

关 键 词：脲醛树脂 环保型 强酸性 低游离甲醛 

分 类 号：TQ637.8[化学工程—精细化工]