Nano thermal-insulation paint for thermal equipment and pipelines and preparation method thereof

Abstract

The invention relates to a nano thermal-insulation paint for thermal equipment and pipelines and a preparation method thereof, belonging to the technical field of heat insulation. The preparation method comprises the following steps: mixing silicon aerogel and an opacifier, stirring an ethanol solution and a penetrant T, and adding into the mixture to prepare a paste aerogel latex; and finally, sufficiently stirring the other materials, adding the paste aerogel latex, and dispersing, thereby obtaining the nano thermal-insulation paint product for thermal equipment and pipelines. The paint is a thermal-insulation material which is mainly composed of the nano silicon aerogel and assisted by the opacifier, adhesive, framework material and the like. The nano thermal-insulation paint prepared by the special technique has the characteristics of low density, low heat conductivity coefficient and great construction convenience. The one-time coating thickness is up to 20mm or above. The paint is suitable for high-temperature thermal equipment and pipelines, and can satisfy related thermal-insulation standards and requirements.

Description

technical field [0001] The invention relates to a nano heat-insulating coating for thermal equipment and pipelines and a preparation method thereof, belonging to the technical field of heat insulation. Background technique [0002] At present, nano-silicon aerogels are used as thermal insulation materials in the market, and the most widely used is nano-aerogel felt. Although the airgel blanket can be bent and deformed, due to its strong rebound force when it is bent, during construction, especially on small-diameter pipes and special-shaped equipment, the number of application layers is large, the construction is difficult, and the gaps are not easy to close. , It is easy to cause thermal bridges, and the dust is large, time-consuming and labor-intensive, and deteriorates the construction environment. Conventional thermal insulation coatings currently used on pipelines and special-shaped equipment, due to their high thermal conductivity and large laying thickness, cannot me...

AI Technical Summary

Problems solved by technology

Although the airgel blanket can be bent and deformed, due to its strong rebound force when it is bent, during construction, especially on small-diameter pipes and special-shaped equipment, the number of application layers is large, the construction is difficult, and the gaps are not easy to close. , easy to cause thermal bridges, and the dust is large, time-consuming and labor-intensive, deteriorating the construction environment

Conventional thermal insulation coatings currently used on pipelines and special-shaped equipment cannot meet the requirements of owners due to their high thermal conductivity and large laying thickness in environments with narrow spaces and high thermal insulation requirements.

[0003] In recent years, many nano-insulation coating products have appeared in the market. They are mainly coatings in the traditional sense, most of which are reflective. The thickness of one coating is limited, and they have been used at high temperatures for a long time, which cannot meet the thermal insulation requirements of industrial thermal equipment.