Polymeric aluminium-silica fireproof heat insulation material and preparation method thereof

Abstract

The invention discloses an insulating refractory material of polymerized silicon and aluminum and the preparation method, applied in construction and industrial facilities, which is characterized in that: excitation, gas evolution and polymerization are carried out for industrial wastes abundant in aluminum oxide, silicon dioxide, and the complex of the silicon dioxide and aluminum oxide, so as to obtain a three-dimensional aluminum silicate minerals with an internal structure made of a plurality of phases from amorphous to semi-crystalline inside, and an internal form in silica tetrahedron and alumina tetrahedron; a plurality of molecules are linked mainly through ionic or covalent bonds, the mechanical properties of the inorganic concretion are externally presented. The raw materials are composed of silicon and aluminum materials as kaolin, fly ashes, coal gangue, cinder, and red mud; without adding any gelled materials, a high temperature and corrosion resistant porous long-chain structure is formed with an intensity over 0.8MPa and a thermal conductivity coefficient of 0.087 (kilocalorie / meter x hour x centigrade). The insulating refractory material is applied not only for the heat insulation wallboards in the building but also for the heat insulation and preservation of the industrial thermal pipelines and facilities.

Description

technical field [0001] A polymerized silicon-aluminum refractory and heat-insulating material and a preparation method thereof relate to a polymerized silicon-aluminum refractory and heat-insulated material used for buildings and industrial facilities. Background technique [0002] Thermal insulation of buildings and industrial facilities is an important topic in industrial production and human life. Due to solar heat radiation, the temperature of petrochemical storage tanks and grain storage facilities increases, which increases operating costs. The heating up of ships, vehicles and buildings has resulted in the extensive use of air conditioners, the consumption of a large amount of electric energy and the large use of Freon, posing a threat to the environment and resources. For this reason, people are looking for better insulation materials to improve the thermal insulation performance of buildings and industrial facilities. At present, the existing heat insulation mater...

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Problems solved by technology

[0005] For a long time, there has been a single variety of heat insulation materials for industrial heat pipe networks and industrial furnaces, and there is a lack of special heat insulation materials with excellent performance in high temperature resistance and corrosion resistance. Mineral wool products widely used at this stage have the advantages of small bulk density and simple processing technology, but due to Using phenolic resin as the binder has limited thermal conductivity and service temperature, and the residual formaldehyde in the adhesive will have a certain degree of impact on the environment.

Although the aluminum oxide cement cemented fly ash insulation material has high temperature resistance, its poor water resistance limits its application; ordinary Portland cement or aluminum phosphate cemented expanded perlite, diatomaceous earth, vermiculite and other porous All materials have disadvantages such as high water absorption

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