摘要
综述了脲醛树脂微胶囊的合成反应机理,从工艺条件的角度综述了甲醛尿素摩尔比、尿素加料方式、反应原料、反应参数(pH值、温度、时间等)对降低游离甲醛含量的影响;同时从改性脲醛树脂的角度综述了通过加入三聚氰胺、苯酚、其他醛类物质、生物质原料以及纳米材料对降低游离甲醛含量的影响。
Synthesis reaction mechanism of urea formaldehyde resin microcapsule were introduced.The effects of molar ratio of urea/formaldehyde,urea feeding mode reactants and reaction parameters(pH,temperature,time,etc.) on formaldehyde content were also discussed.In the last of paper,the effects of adding melamine,phenol and other aldehydes,biomass raw materials and nano materials to reduce the content of formaldehyde were discussed
引文
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