摘要
在强酸和弱酸性条件下 ,就甲醛与尿素的量比对游离甲醛含量的影响进行了试验 ,得到了强酸下低游离甲醛含量脲醛树脂胶粘剂 (UFRA)合成的最佳甲醛与尿素的量比 ;合成出了具有 3,5二氮杂 -二氢 - 1,4砒喃酮 (URON)结构、低毒的UFRA .用于胶合板生产 ,产品甲醛释放量低于E1级标准要求 .
The influence of the molar ratio of formaldehyde to urea on free formaldehyde content (FFC) was studied in strong acid and weak acid. The optimal molar ratio for low FFC was found, and urea formaldehyde resin adhesive with URON structure and low FFC synthesized. The formaldehyde liberation was lower than E1 grade requirement when the adhesive was used in plywood produetion.
出处
《华南农业大学学报》
CAS
CSCD
北大核心
2002年第2期84-85,92,共3页
Journal of South China Agricultural University
