A kind of preparation method of foamed inorganic fiber fireproof insulation material

Abstract

The invention discloses a preparation method of a foaming inorganic fiber fireproof heat insulation material. The preparation method comprises the following steps of (1) adding a polyvinyl alcohol solution and a sodium silicate solution into a flask, adjusting the pH (potential of hydrogen) value, stirring at constant temperature, sequentially freezing and dissolving, so as to obtain a mixture; (2) adding the inorganic fiber into the mixture by batches, stirring, uniformly dispersing the inorganic fiber, fetching inorganic fiber, putting the inorganic fiber into a die, and drying, so as to obtain an inorganic fiber board; (3) mixing phenolic resin and melamine resin, adding ethyl alcohol to dilute, adding an acid curing agent and diatomite, and uniformly stirring, so as to obtain a fireproof impregnating liquid; (4) putting the inorganic fiber board into the fireproof impregnating liquid, and then putting the inorganic fiber board into an air ventilation environment to cure, so as to obtain the foaming inorganic fiber fireproof heat insulation material. The prepared foaming inorganic fiber fireproof heat insulation material has the advantages that the heat conduction coefficient is little, and the easiness in combustion is avoided.

Description

technical field [0001] The invention relates to a preparation method of a fireproof heat preservation material, in particular to a preparation method of a foamed inorganic fiber fireproof heat preservation material. Background technique [0002] Fly ash / coal gangue fiber is a new type of inorganic fiber that has come out in recent years. The fiber is made of solid waste obtained from industrial coal washing and coal burning, and is made through high-temperature melting, spinning, cooling and other processes. , Silencer, non-combustible, small thermal conductivity, light weight, etc., so it has broad development prospects. [0003] At present, the thermal insulation materials used in China are mainly organic materials. Such materials have low thermal conductivity, but have the defect of being flammable. When burning, they will form droplets and produce a large amount of toxic fumes, which endanger personal safety. Contents of the invention [0004] The purpose of the prese...

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Problems solved by technology

[0003] At present, the thermal insulation materials used in China are mainly organic materials, which have a small thermal conductivity, but have the defect of being flammable. When burning, they will form drips and produce a large amount of toxic fumes, which endanger personal safety.