Study on the Synthesis and Properties of Urea Formaldehyde Resin
This article adopts the process of alkali acid alkali and the synthesis method of urea added in two parts to study the synthesis of urea formaldehyde resin with low free formaldehyde content and high solid content.The influence of reaction conditions such as pH value and reaction time of raw material formaldehyde on the performance of urea formaldehyde resin was investigated.The research results indicate that the optimal molar ratio for synthesizing urea formaldehyde resin is 1:2.50,the reaction time is 2 hours,the optimal pH is 7.6,and the modifier is melamine.
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