| abstract |
The invention discloses a water-based phase-change heat-absorption intumescent flame-retardant fireproof coating for a tunnel, which comprises the following raw materials: the preparation method comprises the following steps of loading mannitol-galactose on expanded perlite, loading melamine-phosphoric acid modified lignin, loading chlorinated paraffin on expanded graphite, gelatinized starch, light-burned magnesium oxide, magnesium chloride, polyoxyethylene ether oleate dustproof agent, organic silicon defoaming agent, hydroxyl silicone oil, amino silicone oil, waterborne polyurethane, nano tin dioxide, titanium dioxide, filler, aluminum silicate and polyether modified polydimethylsiloxane leveling agent. This fire-retardant fireproof coating absorbs latent heat at the conflagration initial stage and resists the temperature rise, forms the isolated heat of expanded foam charcoal layer under the high temperature effect, prevents the temperature rise of tunnel concrete structure, avoids the intensity decline of tunnel concrete structure, and the coating is thin, construction speed is fast, the maintenance cycle is short, the water proofness is good, be applicable to the dark humid environment in tunnel. |