Heat-resistant paint for metal: types and scope

Heat-resistant paint and varnish products, designed for metal surface treatment, Serve to protect various structures from the harmful effects of corrosion caused by chemical and atmospheric influences arising in operating conditions at elevated ambient temperatures. If the walls of industrial ovens and pipes, domestic radiators or any other devices are painted with ordinary paint, then under the influence of heating the coating layer will lag behind the surface, and the metal will be unprotected. Also, a less destructive for the metal, but unpleasant from the aesthetic point of view, phenomenon - yellowing of the paint, can be observed.

At present, the chemical industry produces several varieties of heat-resistant paints intended for painting metallic surfaces, depending on the temperature regime of the environment in which this or that product will be used.

The medium, in which the metal surface is heated to a temperature of 80 ° C, allows the use of any paint and varnish materials.

Heat-resistant paint for metal, based on alkyd and acrylic resins, is used for painting structures exposed to temperatures up to 100 ° C, contains special heat-resistant additives that prevent yellowing of the surface when heated. Typically, this variety is used for painting domestic radiators and hot water systems.

For the coloring of surfaces of various mechanisms and structural elements operated at temperatures up to 120ºС, a heat-resistant paint for metal, made using an epoxy primer and with the addition of zinc and zinc-phosphate components, is used. Epoxy enamel can be used at higher temperatures - up to 200 ° C.

At temperatures up to 400 ° C, one-component coatings based on ethyl silicate and epoxy ether resins are recommended. At this temperature, the burnout of conventional pigments occurs instantaneously, so this heat-resistant paint for metal contains a metallic powder. This variety can be applied to the product in one layer.

In conditions of work of a product or a design in a temperature mode up to 650ºС, experts recommend the use of one-component coatings, based on silicone resins. In this case, the heat-resistant paint for metal is applied to the surface with a very thin layer, the value of which is from 30 to 100 microns.

The temperature regime above 650 ° C implies the use of coatings made on the basis of heat - resistant glass and composite materials as a coloring material.

Paint and varnish materials intended for dyeing of metal products involved in high temperature conditions have high wear resistance, they are durable and elastic, environmentally safe, durable. They can be applied to the surface in both indoor and outdoor environments. The disadvantages of using heat-resistant paints include the method of their application - these paint materials, for example, epoxy paint for metal, are applied to the surface by spraying, and this entails an increased consumption of material.