Industrial thermal insulation coating and preparation method thereof

Abstract

The invention relates to an industrial thermal insulation coating. The industrial thermal insulation coating comprises an aqueous polymer adhesive, ceramic hollow microspheres with external diameters of between 10 and 50 microns, organic hollow microspheres with external diameters of between 10 and 50 microns, a flaky pigment and filler, a serrated pigment and filler, and an aid. A preparation method of the coating comprises the steps of: A, injecting deionized water into a premixing dispersion tank according to a formula proportion, and adding an inorganic pigment and filler dispersant and a wetting agent and fully stirring; B, adding a flame retardant and / or other pigments and fillers; C, adding a defoaming agent and fully stirring, and then adding the serrated pigment and filler and fully dispersing; and D, injecting the aqueous polymer adhesive and a sizing agent obtained after the dispersion in step C into a thinning tank, stirring and then adding the ceramic hollow microspheres and the organic hollow microspheres, and then stirring and adding other aids at the same time. The coating is single-component and water-soluble, and can be cured at normal temperature and cured at high temperature; a compact protective layer is formed on the surface, so the coating is applicable to places where the humidity is higher; and when the coating is used for equipment with surface temperature lower than 260 DEG C, the surface temperature can be reduced by up to 80 DEG C.

Description

technical field [0001] The invention relates to a thermal insulation coating, in particular to a water-based, single-component thermal insulation coating for the surface of industrial equipment and a preparation method thereof, belonging to the field of industrial energy-saving thermal insulation materials. Background technique [0002] There are two types of thermal insulation materials currently used in industrial equipment. One type is traditional fiber insulation materials, such as aluminum silicate fiber, rock wool, glass wool, ceramic fiber, etc. Their disadvantage is that they must be wrapped, wrapped, wrapped or reinforced with auxiliary materials during construction, and the insulation layer is relatively thick. , There are many seams, the service life is short, and production needs to be stopped during construction. The other type is inorganic thermal insulation coatings. Their disadvantages are that they need to be cured at high temperature, cannot adopt rapid sp...

AI Technical Summary

Problems solved by technology

One type is fiber-based traditional thermal insulation materials, such as aluminum silicate fiber, rock wool, glass wool, ceramic fiber, etc. Their disadvantage is that they must be wrapped, wrapped, wrapped or reinforced with auxiliary materials during construction, and the insulation layer is relatively thick. , there are many seams, the service life is short, and production needs to be stopped during construction

The other is inorganic thermal insulation coatings. Their disadvantages are that high temperature curing is required, rapid spraying construction technology cannot be used, long construction period, low compressive strength, high brittleness of the coating, poor adhesion to the substrate, and harmful substances such as heavy metals and High volatile matter (VOC) content, short service life, etc., cannot meet the requirements of environmental protection, energy saving and consumption reduction of existing industrial enterprises

Images