Method of preparing aerogels/nonwoven composites fireproof and heat-insulating materials

Abstract

A method of preparing aerogels / nonwoven composites fireproof and heat-insulating materials with a hydrophobic or hydrophilic surfaces and includes steps as follows. A mixture solution in which alkoxysilane, silicones and silane coupling agents are mixed and stirred is instilled by acidic catalysts for a hydrolysis reaction during which a silane coupling agent solution is added for continuous stirring; a hydrous alkali catalytic (anhydrous alkali catalytic) organic solution is added in the mixture solution for a condensation reaction and development of a 'silicones-silica aerogels-silane coupling agents' aerogel mixture solution; a non-woven felt is impregnated with the mixture solution for development of soft hydrophobic (hydrophilic) aerogels / nonwoven composites fireproof and heat-insulating materials after curing and natural drying. The aerogels / nonwoven composites materials with softness and surface hydrophobicity / hydrophilicity available in mass production are applicable to thermal-insulating materials for high-temp industrial facilities or indoor heat-insulating and fireproof panels of a building structure.

Description

technical field [0001] The invention relates to a preparation method and product of an airgel / non-fabric composite fire-proof and heat-insulating material with different surface hydrophilic and hydrophobic properties and flexibility, and particularly relates to a combination of silicon alkoxide compounds, silica gel compounds and The silica gel-silicon aerogel-silane coupling agent three-mix airgel sol solution system of silane coupling agent compound; soak a non-fabric in this three-mix airgel sol solution, so that the aforementioned airgel sol solution is evenly interspersed in the In this non-woven fabric, go through a drying process again to obtain an airgel / non-woven composite material that can have different hydrophilic and hydrophobic surface properties and has softness. This material can be applied to heat insulation materials for high-temperature equipment or building structures. Indoor insulation and fireproof board materials. Background technique [0002] Press, ...

AI Technical Summary

Problems solved by technology

However, this preparation method cannot be industrialized, and the airgel prepared by it will obviously have cracks and be easily broken, which will affect the overall industrial application of airgel, so there is still considerable room for improvement in the preparation

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