
脲醛;尿素甲醛
The free formaldehyde of the urea formaldehyde resin adhesive agent is the main pollution source of artificial board.
尿醛树脂胶粘剂中的游离甲醛是人造板中主要的污染源。
A novel method for producing urea formaldehyde resin with intensive viscidity, high solid content and low toxicity is introduced in this report.
介绍一种粘结强度大、固含量高、低毒环保型的脲醛树脂粘合剂的合成方法。
With sulfonated melamine and urea as monomers and acids as catalysts, the synthesis of sulfonated melamine urea formaldehyde resin is carried out.
以磺化三聚氰胺和尿素为单体,在酸催化下,合成磺化三聚氰胺尿素甲醛树脂。
Viscosity change of melamine urea formaldehyde glue line was investigated with a thermo mechanical analyzer (TMA) used as a parallel plates rheometer.
用热机械分析(TMA)方法研究了三聚氰胺-尿素-甲醛树脂固化初期胶层粘度的变化。
This paper aimed at the problem of moisture-resistance performance of finish foil, adopting melamine modified urea formaldehyde impregnated resin to make MUF.
本文采用三聚氰胺对脲醛树脂进行改性,合成三聚氰胺改性脲醛树脂(MUF),解决预油漆纸耐潮湿性的问题。
尿素甲醛(urea-formaldehyde)是一种由尿素和甲醛通过缩聚反应合成的热固性树脂,属于氨基树脂的重要类别。其化学结构以亚甲基键(—CH₂—)和亚甲基醚键(—CH₂—O—CH₂—)为主,形成三维交联网络,具有高硬度、耐热性和绝缘性。
尿素甲醛树脂在潮湿或高温环境中可能缓慢释放游离甲醛。根据美国环保署(EPA)研究,长期暴露于高浓度甲醛可能引发呼吸道刺激,因此相关制品需符合甲醛释放标准(如CARB认证)。
"Urea formaldehyde"(脲醛树脂)是一种由尿素(urea)和甲醛(formaldehyde)通过缩聚反应合成的热固性聚合物,属于氨基树脂的一种。以下是其详细解释:
若需进一步了解具体合成工艺或应用案例,可参考权威化学数据库或专业文献。
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