Aerogel core material capsule, paint prepared from same and preparation method of paint

Abstract

The invention relates to an aerogel core material capsule, paint prepared from the same and a preparation method of the paint, in particular to the paint which is prepared by conducting encapsulation on aerogel particles through a suspension coating method and adding a film forming agent, reinforcement powder, function powder and an additive with the capsule, with aerogel particles as the core material, as the main thermal insulation component, and has the nanometer porous structure. Encapsulation is conducted on aerogel particles through the suspension coating method, it is avoided that water or other reagents permeate aerogel nano-pore particles to generate capillary force and damage porous structures, and therefore the paint of the complete nano-pore structure is prepared. The prepared paint has excellent thermal insulation performance and is easy to operate, low in production cost, green, environmentally friendly, safe, capable of being applied to thermal insulation and corrosion prevention of devices such as hearths, pipelines, valves and storage tanks in the fields of aviation and military, metallurgy forging, petroleum refining, electric power, ships and the like, and also capable of being used for heat preservation and thermal insulation in the field of construction.

Description

technical field [0001] The invention relates to an airgel core material capsule, a coating made by the same and a preparation method thereof, in particular to a capsule in which airgel particles are encapsulated by adopting a suspension coating method, and then the airgel particles are used as a core material. The main heat insulation component is prepared by adding film-forming agent, reinforcing powder, functional powder and admixture to prepare a coating with nanoporous structure. The invention adopts the suspension coating method to encapsulate the airgel particles, avoiding the capillary force caused by the infiltration of water or other reagents into the airgel nanopore particles and causing the destruction of the pore structure, thereby preparing the coating with a complete nanopore structure. The suspension coating method adopted in the present invention encapsulates airgel particles and effectively utilizes the characteristics of light weight and easy suspension of ai...

AI Technical Summary

Problems solved by technology

[0004] The disclosure and implementation of the above-mentioned patents will facilitate the advancement of airgel in the development and application of high-performance coatings, but there are still fatal shortcomings: airgel is a nanoporous material with an open-pore structure, and the hydrophobic airgel powder is very It is difficult to mix with other materials in a water-based environment. The product obtained in an oil-based environment is not only environmentally friendly, but the organic reagents entering the airgel pore structure will also cause significant damage to the airgel structure; if hydrophilic airgel powder is used in a water-based environment It will be transformed into a hydrogel, and the nanostructure of the gel pores will collapse due to the capillary force generated by the huge surface tension of the water phase, which cannot give full play to the nanopore heat insulation benefits expected by technicians

[0006] The above-mentioned patent partially solves the structural damage caused by reagents immersed in airgel pores, but due to the relatively large volume occupied by the resin in the composite process, the thermal conductivity of the obtained airgel powder or particles is still high, and the airgel cannot be fully utilized. super thermal insulation performance