High-temperature-resistant silicon-based aerogel coating and preparation method thereof

Abstract

The invention provides a high-temperature-resistant silicon-based aerogel coating which comprises the following components in parts by weight: 10-30 parts of high-temperature-resistant aerogel powder,1-5 parts of a binder, 0.5-1 part of a functional additive, 1-2 parts of inorganic fireproof fiber, 80-100 parts of a film-forming agent and 1-2 parts of a film-forming assistant. The invention alsoprovides a preparation method of the high-temperature-resistant silicon-based aerogel coating. The silicon-based aerogel coating can be used for a long time under the environment of 1200 DEG C, and has the performances of high-efficiency high-temperature heat insulation performance, heat-resistant shock resistance and good construction performance.

Description

technical field [0001] The invention relates to the field of airgel, in particular to a high-temperature-resistant silicon-based airgel coating and a preparation method thereof. Background technique [0002] Thermal insulation coatings reduce the temperature of the coating and the internal environment by preventing heat conduction, thereby achieving the purpose of improving the working environment and reducing energy consumption. Airgel is a nanoporous lightweight material with a controllable structure. It has a nanostructure and a large surface area. , high porosity, the nanoporous structure particles of airgel make the airgel material present the interface effect and small size effect unique to nanomaterials macroscopically, it is a super thermal insulation material with singular performance and extremely high added value , but because of its unique network structure, high porosity and low density, aerogel itself has low strength and high brittleness, and is easily destroy...

AI Technical Summary

Problems solved by technology

[0002] Thermal insulation coatings reduce the temperature of the coating and the internal environment by preventing heat conduction, thereby achieving the purpose of improving the working environment and reducing energy consumption. Airgel is a nanoporous lightweight material with a controllable structure. It has a nanostructure and a large surface area. , high porosity, the nanoporous structure particles of airgel make the airgel material present the interface effect and small size effect unique to nanomaterials macroscopically, it is a super thermal insulation material with singular performance and extremely high added value , but because of its unique network structure, high porosity and low density, aerogel itself has low strength and high brittleness, and is easily destroyed under external pressure. Therefore, in many fields, aerogel It is difficult to use gel alone as a heat insulating material. In order to overcome the shortcomings of airgel itself, it is necessary to combine airgel with other materials to form airgel coatings. However, the airgel coatings in the prior art have poor high temperature resistance. Poor insulation