环氧树脂先与三聚氰胺和脲在一定条件下反应，然后再与甲醛反应。

First, epoxy resin reacts with melamine and urea under certain conditions, and then the product reacts with formaldehyde.

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结果表明，液体聚硫聚脲齐聚物的用量、齐聚物中聚脲含量对固化后的环氧树脂玻璃化温度、模量及形态有较大影响。

The results show that the level of polysulfide polyurea and the content of hard segment in polysulfide polyurea influence the morphology, T_g and modulus of cured epoxy resin.

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对脲-三聚氰胺-甲醛树脂改性白乳胶进行了研究。

The modified PVAc emulsion adhesive with Urea melamine formaldehyde(UMF) resin is studied.

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