UF-Foam Based on Antiflaming and Thermal Insulation Composite

Abstract

An effective antiflaming and thermal insulation composite was made from self-made foam glass particles, and urea-formaldehyde (UF) resin foaming which was synthesized by urea, formaldehyde and polyvinyl alcohol. UF resin was foamed by n-pentane and cured by mixed acids. In this system, UF resin foam was continuous phase, while foam glass particles were dispersed one. For UF resin and its foam, the scheme which formaldehyde reacts with urea was studied by FT-IR spectroscopy. The hydroscopicity of UF resin decreased and dynamic viscocity increased with increasing polyvinyl alcohol (PVA) content. The mophology of fracture surface of UF resin foam is using SEM. The experimental results were shown that the heat conductivity of this composite was only 0.035 W/(m·K). The oxygen index of pure UF resin foaming is 50%. The result of burning test shown that UF resin foam was difficult to burn, hence the flame retardance of the composite was excellent.