The invention relates to an
aerogel composite material with a surface subjected to dust-free treatment and a preparation method thereof, in particular to a method using an
aerogel felt, an
aerogel plate, an aerogel cylinder and an aerogel shaped piece as the base material and
coating the
substrate surface with compact
coating so as to avoid shedding of aerogel
surface dust. The method is simple and practicable, can effectively solve the problem of easy generation of dust on the aerogel surface, significantly improves the
working environment, and can satisfy the use condition of aerogel in clean space. By adopting different ratios, a rigid
coating and a flexible coating can be obtained, high temperature and low temperature application can also be achieved, compound proportioning of an inorganic film-forming agent and an
organic film-forming agent also can give consideration to flexibility and
fire resistance, and significantly improves the adaptability of the coating paste to different types of aerogel materials. The aerogel subjected to dust-free treatment can be applied to heat preservation of various
industrial equipment and pipeline, and also can be applied to
thermal insulation of high speed rail, vessels,
electronics and pharmaceutical workshops and building field.