Fireproof foam composite board and preparation method thereof

The invention relates to a building and packaging material, and in particular relates to a fireproof foam composite board, which comprises EPS (Expanded Polystyrene) foam particles; the fireproof foam composite board is characterized in that two layers of materials are wrapped outside the EPS foam particles in the composite board; the first layer is a fireproof and waterproof material, which comprises the following components in percentage by weight: 60-80% of air setting inorganic gelatinization material, and 20-40% of methane-siliconic acid powder; and the second layer is a heat preservation bonding material, which comprises the following components in percentage by weight: 50-85% of mineral cotton micro-powder, 10-30% of organic resin, and 2-20% of coating additive. In the event of preparing, the EPS foam particles are coated and cured for two times by using the above formula, and then thermally pressed and formed by using a board making machine; an outer wrapping fireproof coating technology is adopted; by utilizing perfect combination of an inorganic material and an organic material, the fireproof grade of the EPS foam composite board is greatly increased; the combustion performance can be A1 grade; and the fireproof foam composite board disclosed by the invention is simple in production process and low in equipment requirement, is applied to various small, medium and large microenterprises, and can be used as a heat preservation and fireproof material widely applied to building external walls and the like.