Study on Modification of Urea Formaldehyde Resin with keratin
As the main adhesive types in wood-based panel industry,urea-formaldehyde has such shortcomings as high levels of free formaldehyde content and formaldehyde emission of its bonding product.In this experiment,we try to modify urea-formaldehyde resin with keratin through copolymerization reaction.Through the determination of such reaction technology as molar ratio,adding sequence of keratin and adding amount of keratin,we finally synthesized the low toxic urea resin.The results show that the optimum molar ratio is 1.3:1,the adding amount of keratin is 5％ and adding keratin after the third feeding of urea is the best choice.By optimizing the synthesis process,we ultimately get the low toxicity modified urea-formaldehyde resin.At the same time,modified urea-formaldehyde resin cost has been reduced because extensive sources of keratin and low cost.
keratin urea-formaldehyde resin formaldehyde emission bonding strength
Pang Jiuyin Sunchuan Zhang shicheng Cui Haixing
Beihua University,Jilin 132013,China
国际会议
哈尔滨
英文
1787-1791
2010-07-24（万方平台首次上网日期，不代表论文的发表时间）