Study on Melamine Formaldehyde Resin Foam Modification Technique

摘要

This passage studied the synthetic process of melamine formaldehyde resin foam, analyzed the addition time of modifier of PVA, reaction temperature, PVA quantification and different degree of polymerization PVA. The results of experiments showed that it was better to add the PVA at 50min after the heating start. The temperature was 90-95°C. It showed that there was an obvious distinction of the foam with different degree of polymerization PVA. Decomposition temperature of the foam was 300°C and the residual of mass was about 80%.