Heat-resistant enamel: types, properties and applications
Surfaces that are constantly exposed to heat need additional protection. Heat-resistant enamel will not only protect various materials from exposure to high temperatures, but also give the product an attractive appearance.
The types, properties and application of heat-resistant paints should be considered in more detail.
Special features
Heat-resistant paint can withstand very high temperatures. Such enamel treated surfaces that are exposed to heat. Depending on the composition of the paintwork material, its purpose and technical characteristics are determined. High-quality heat-resistant enamel should have good adhesion, anti-corrosion and insulating properties, as well as plasticity.
Paint material for metal prevents the formation of rust on the surface.With sharp temperature changes, heat-resistant paint does not crack and does not lose its characteristics due to good ductility.
Types, colors and release form
It is possible to classify heat-resistant enamels on the basis of their composition, purpose and operating temperatures.
The following types of paints and varnishes are distinguished:
- household enamels based on acrylic or alkyd resins. Such compositions can withstand temperatures up to +100 degrees and are used mainly for painting radiators;
- heat-resistant paints based on epoxy resins can tolerate the influence of temperatures not exceeding 120 degrees;
- one-component and two-component mixtures based on polyurethane have a high drying rate and a glossy surface;
- Special formulations based on silicone are designed for painting structures that are located at industrial facilities. Such enamels can withstand temperatures up to +1000 degrees;
- water-based enamels with latex fillers are designed for application to brick and concrete bases. In addition to resistance to high temperatures, the coating has water-repellent properties.
Heat-resistant paint is most often available in three colors: black, gray and white. However, there are modifications and other shades, which in addition to the protective function can play the role of a decorative coating. Such enamels cost a little more. According to the level of gloss, heat-resistant paint is produced both in matte and in glossy version.
For painting uneven surfaces that have significant defects, it is best to use matte enamel.
Available paints in the following form:
- aerosol cans - for painting complex structures it will be preferable and more convenient to use the spray;
- cans or buckets with the mixture ready for application - this enamel is characterized by lower consumption compared to aerosols.
Composition and properties
The composition of heat-resistant enamel is more complex than that of conventional coloring mixtures. The basis of such a material used silicone lacquer, which is mixed with polymers, dyes and various fillers. Technical characteristics of heat-resistant enamel depend on its composition, which may vary from different manufacturers.To designate certain properties of heat-resistant mixtures, special marking is used.
It is worth considering the most common modifications of coatings:
- KO-811. This enamel is used for painting aluminum, steel and titanium structures. The composition of the paintwork material does not include toxic substances, so this paint is considered environmentally friendly. This enamel has good resistance to high levels of humidity and rapid temperature changes.
- KO-813. The paint is designed for application to metal products. It has anti-corrosion properties and can be operated at temperatures from -60 to +500 degrees.
- KO-814. This enamel is most often used for painting steam lines. The operating temperature range is from -60 to +400 degrees.
- KO-8101. The modification is intended for application to metal structures that are exposed to temperature effects ranging from -60 to +600 degrees. Enamel possesses not only high anticorrosion characteristics, but also resistance to the negative effects of petroleum products, mineral motor oils and salts.
- KO-8104. This paint can be used for painting pipelines that transport steam, exhaust systems of vehicles and furnaces. Enamel has anti-corrosion properties. The temperature of the coating can be from -60 to +600 degrees.
- KO-8111. Enamel provides reliable protection against rust, and can also be used to paint products that are used in aggressive environments.
Criterias of choice
When choosing a suitable heat-resistant enamel, it is important to carefully study its composition. Depending on where the paint will be used, and you need to select a product with suitable technical characteristics.
When buying enamel you need to consider several indicators:
- Uhoperating temperature. Most often, the working temperature range of enamel ranges from -60 to +600 degrees. However, there are special compounds that can withstand temperatures up to +1000 degrees.
- Anti-corrosion properties Especially important when painting metal surfaces that will be used in high humidity conditions. For example, boilers and stoves in baths and saunas.
- The presence of toxic substances in the composition. It is not recommended to use enamel with toxic components for painting products indoors. When such paint is heated, harmful vapors will be emitted into the air.
- Moisture resistance. These modifications are used mainly for painting pipes of heating mains and gas pipelines.
- Purpose of the mixture and compatibility with various materials. There are heat-resistant lacquer coatings of both universal and narrowly targeted purposes, for example, for ferrous metals.
When choosing, it is necessary to take into account some features of the enamel hue. For example, if the oven is painted in dark matte paint, the device will heat up faster. If the heating rate is not so important, and when painting the fireplace in the first place you want to achieve a decorative effect, then it is better to use colored enamel of a suitable shade.
Application Methods
Scope of heat-resistant enamels is quite wide. Such paintwork material can be used both at industrial facilities and for household equipment.
Most often, the fire-resistant composition is stained with the following:
- heating radiators;
- gas pipelines;
- pipes of heating mains;
- auto parts;
- industrial drying equipment;
- fireplaces, stoves, boilers;
- gas stoves;
- heating elements of industrial equipment.
Before applying heat-resistant enamel, the surface must be thoroughly cleaned and degreased with a solvent.. Paint brushes, paintbrushes or rollers can be used to work with the paint. And also it is possible to get a paint and varnish product in the form of an aerosol spray. The recommended working temperature range is from -20 to +40 degrees.
For personal safety it is recommended to paint products in a respirator and gloves.. If work is carried out indoors, then it must be well ventilated. The coloring mixture is usually applied in no more than three layers.
Before applying each subsequent layer, the previous one should dry out. It usually takes about two hours.
Manufacturers and reviews
To get a high-quality heat-resistant coating, when buying enamel it is recommended to give preference only to proven manufacturers. Choosing a suitable composition, it will be useful to study customer reviews on popular heat-resistant paints.
Elcon
Elcon is the largest manufacturer of paints and varnishes in Russia. The company not only manufactures special-purpose blends, but also develops formulations. Thanks to research and development, many Elcon products have unique characteristics that are unparalleled in the entire construction market.
Elcon's heat-resistant enamels have 11 different modifications, differing in composition and purpose. The most popular product is Elcon paint with heat resistance from -60 to +1000 degrees. The material is produced in the form of aerosol cans and in iron cans. The composition of the coloring mixture does not include harmful substances, which allows the use of enamel for painting structures inside the premises.
The resulting coating protects the product not only from exposure to high temperatures, but also from moisture. In addition, enamel perfectly tolerates the effects of aggressive substances. The service life of the coating can reach 25 years.
Buyers note the following benefits of Elcon heat resistant paint:
- quick drying;
- easy to apply;
- does not crack and does not fall off from exposure to high temperatures;
- the possibility of painting works at negative air temperatures;
- durability of the resulting coating.
Consumers also note that the material has a lower cost compared to foreign counterparts. However, Elcon heat-resistant aerosols have one drawback - it is a high consumption per square meter of surface. Due to the high consumption of enamel, the total cost of painting work is quite high.
"Spectrum"
The company "Spectrum" is a leader among Russian manufacturers of heat-resistant enamels. The company's products meet all European quality standards. For the manufacture of paints and varnishes used only high-quality foreign raw materials, as well as raw materials of its own production. There is a laboratory on the basis of the enterprise, where new products are developed, as well as the quality control of raw materials and finished materials.
"Spectrum" produces a universal heat-resistant paint branded Certa. The mixture is excellent for processing metal, brick, concrete, cement and plastered bases.. Enamel withstands high temperatures up to +900 degrees.Mix is applied both in the industry, and for the household purposes. Certa paint is perfect for covering car parts.
Customer reviews of Certa heat-resistant enamel are mostly positive.
Consumers highlight the following material benefits:
- acceptable cost;
- ease of application;
- high quality of the coating;
- high drying speed.
Buyers did not reveal any obvious deficiencies in Certa paint. Some consumers only point out that when applied to a poorly prepared surface, a qualitative result will not be obtained. After a while, the paint will crack and begin to fall off.
Review the Elcon heat-resistant enamel in the next video.