phenolic urea
英
美
[网络] 酚醛尿素
双语例句
- A new type of phenolic resin adhesive for casting was prepared by condensation polymerization of furfuryl alcohol and the reaction product between phenol, phenylphenol, urea and formaldehyde.
苯酚、苯基苯酚、尿素与甲醛的反应产物进一步与糖醇缩聚生成新型铸造用改性酚醛树脂粘结剂。 - PF resins have the disadvantage of high cost, lower curing rate and the fuscous glue line. Modify the phenolic resin by urea is a hot spot for researcher.
但是酚醛树脂具有生产成本高、固化速度慢以及胶层颜色深的缺点，因此通过尿素实现对酚醛树脂的共缩聚改性成为酚醛树脂研究的热点。