The invention relates to a
building material and a preparation method thereof, in particular to novel insulating waterproof
foaming agent and a preparation method thereof. The novel insulating waterproof
foaming agent comprises the following components by weight percentage of the total weight of the novel insulating waterproof
foaming agent: 10 to 15 percent of
rosin, 2.5 to 3.75 percent of caustic soda, 0.001 to 0.003 percent of
citric acid, 0.05 to 0.1 percent of SM efficient water-
reducing agent, 0.5 to 1 percent of silica
powder, 35 to 47 percent of rubber
powder, and 35 to 50 percent of water. The preparation method for the novel insulating waterproof foaming agent comprises the following steps: firstly mixing, stirring and heating the
rosin and the caustic soda; then dissolving the SM efficient water-
reducing agent, the
citric acid and the silica
powder into the water, heating and insulating the mixture; and mixing the two mixtures into a heating container, adding water into the mixtures and stirring the mixtures, and adding the rubber powder with required amount into the twice mixtures and stirring the mixtures. Compared with the prior art, the method adopting compound foaming improves quality of the foam greatly, the inner wall of a bubble formed by foaming can form a layer of extremely thin high-molecular
crystal glue film with waterproof function, and
mortar added with the foaming agent also has better heat-insulating property.