SiO2 enriched nano composite inorganic flame-retardant heat insulating thermal preserving board and manufacturing process thereof

Abstract

The invention relates to a nano composite inorganic flame-retardant heat insulated board rich in SiO2, which is characterized in that the form of the board is a planar or allotypic inorganic nano composite board, and the board is a compound of micron holes and granules, nano holes and granules and fiber structure. The board comprises the following components by weight percentage: 40 to 80 percent of SiO2 powder, 10 to 30 percent of zirconium oxide superfine powder, 0 to 20 percent of inorganic closed-hole micro-bead material, 2 to 15 percent of expanded perlite, 0 to 15 percent of vermiculite, 0.1 to 2 percent of coupling agent, 2 to 10 percent of adhesive, 0 to 6 percent of calcium silicate fiber, 0 to 10 percent of magnesium aluminum silicate fiber, and 0 to 10 percent of aluminum silicate fiber; and the components are subjected to dispersion, blending, blank forming, airing or drying to prepare the board, wherein the drying temperature is no more than 120 DEG C. Preparation equipment comprises a vacuum powder suction device, a mixing machine, and an automatic blank manufacturing machine.

Description

technical field [0001] The present invention relates to an inorganic thermal insulation material and its preparation process, in particular to a light-weight inorganic composite composite plate rich in nanopores and particles, micropores and particles, and fiber structure and its production process. The composition is silicon dioxide and zirconium dioxide, which can be widely used in aviation, petroleum, chemical industry, electric power, construction, metallurgy and other fields. Background technique [0002] At present, the widely used inorganic insulation materials include calcium silicate insulation board and aluminum magnesium silicate board. The bulk density of the product is generally above 180 kg / m3, and the thermal conductivity at room temperature is above 0.07, and the thermal conductivity at high temperature is even higher. Moreover, a long drying process is required in the production process, which not only wastes energy, but also restricts its use in aviation an...

AI Technical Summary

Problems solved by technology

[0002] At present, the widely used inorganic insulation materials include calcium silicate insulation board and aluminum magnesium silicate board. The bulk density of the product is generally above 180 kg / m3, and the thermal conductivity at room temperature is above 0.07, and the thermal conductivity at high temperature is even higher. And the production process requires a long drying process, which not only wastes energy, but also restricts its use in aviation and other fields that require lighter weight high-temperature insulation