Reflective heat-insulation coating for engineering machinery coating and preparation method of reflective heat-insulation coating

Abstract

The invention relates to a reflective thermal insulation coating for engineering machinery coating and a preparation method of the coating. The coating is composed of a thermal insulation type two-component epoxy primer and a reflective thermal insulation type two-component polyurethane finish. The thermal insulation type two-component epoxy primer is prepared by mixing a component AI and a component BI, wherein the component AI is mainly prepared by mixing the following raw materials: bisphenol A epoxy resin, anatase titanium dioxide, carbon black, glass air beads, reflective heat-insulating powder, zinc phosphate, heavy calcium carbonate, fumed silica and organic bentonite; and the reflective thermal insulation type two-component polyurethane finish is prepared by mixing a component AII and a component BII, wherein the component AII is mainly prepared by mixing the following raw materials: hydroxy acrylic resin, rutile titanium white, carbon black, nano reflective titanium dioxide, reflective heat insulation powder and fumed silica. The reflective heat-insulating coating for engineering machinery coating has high reflectivity and emissivity to sunlight and good heat-insulating effect, and can meet the harsh corrosion-resistant and weather-resistant requirements of salt mist resistance for 720 hours and xenon lamp aging resistance for 2000 hours.

Description

technical field [0001] The invention relates to an engineering machinery anti-corrosion paint, in particular to a reflective heat-insulating paint for engineering machinery coating and a preparation method thereof. Background technique [0002] Most industrial coatings on the market today absorb infrared rays from sunlight and convert them into heat, causing the coating to heat up. The heat is conducted from the coating to the substrate, and then from the substrate to the inside, resulting in an increase in the temperature of the workpiece of industrial machinery and equipment used outdoors, resulting in a temperature difference and deformation, thus forming various hidden dangers in use. In order to overcome these defects, it is necessary to develop heat-reflective and heat-insulating coatings in a targeted manner. Compared with ordinary paint, this paint can reflect or scatter more infrared rays, and has a certain heat insulation effect. [0003] At present, reflective h...

AI Technical Summary

Problems solved by technology

This kind of coating has poor salt spray resistance and low xenon lamp aging resistance. It is mainly used in the construction field and cannot meet the stringent requirements of salt spray resistance of 720h and xenon lamp aging resistance of 2000h for construction cranes and other mechanical equipment.

[0005] CN1583894A discloses a heat-insulating sunscreen coating and its preparation method. The coating is mainly composed of film-forming agent, mica powder, and hollow ceramic heat-insulating material to form a composite heat-insulating coating that reflects and blocks solar heat. It has low thermal conductivity, It has the characteristics of high heat reflectivity, but its aging resistance is average, and it is not anti-corrosion, so it cannot meet the requirements of construction machinery

And use a single hollow ceramic heat insulation material, which has low reflectivity to sunlight, which makes the reflection and heat insulation effect of the paint poor

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