Composition of primer enamels against rust, characteristics of paints and top 5 of the best brands
Whatever the nature of the operation, over time, the metal is covered with a layer of corrosion, which destroys the material. In such cases, to restore the structure, it is recommended to use an enamel rust primer. Such compounds can be applied directly to corroded areas, providing additional protection to the metal. Primer-enamel is available in several forms, each with its own advantages.
Anti-rust paint requirements
A high quality enamel primer should:
- stop the spread of corrosion with a layer up to 100 micrometers;
- avoid the appearance of new traces of corrosion;
- increase the adhesion of subsequent layers of paint (i.e. act as a primer);
- withstand temperature changes and precipitation.
The primer-enamel used in the restoration of the body and bottom of the car must also withstand constant contact with harsh (reactive) chemicals.
Such requirements for anti-rust paints are due to the fact that materials of this type are mainly used for processing products located on the street. A high quality enamel primer can be used for finishing structures in:
- aluminum;
- Stainless steel;
- melting;
- zinc;
- the copper.
Moreover, the field of application of this composition is not limited to these metals alone. Primer-enamel for rust is often used for processing wood, concrete or brick, replacing the primer with this material.
The composition and features of the use of primer-enamel for rust
Rustproofing primer contains three main components:
- Urethane alkyd varnish. This component acts as a binder that accelerates the drying of the material.
- Anticorrosive substances. The primer-enamel contains modifiers that neutralize rust and special pigments that prevent the appearance of new foci of corrosion.
- E-mail. This substance forms a surface film of a certain color.
In addition, rust enamel contains plasticizers and other additives that improve the basic characteristics of the material. In addition, this product contains solvents (white spirit is more commonly used) which gives the initial mixture the required viscosity.
High-quality primer enamels are distinguished by the following characteristics:
- the ability to withstand temperature fluctuations from -45 to +100 degrees;
- create a dense and elastic surface layer that does not crack for several years;
- withstand constant contact with direct sunlight and moisture.
Some types of this material are characterized by increased heat resistance. Enamel dries quickly at temperatures of +20 degrees.
Benefits and uses
Although this material can be applied directly to rust, the work surface must be prepared. For this you need:
- remove the old layer of paint and varnish;
- eliminate peeling foci of corrosion;
- rinse from dirt and dust;
- degrease with solvent.
If the old paint is nitro-based, a special solvent must be used to remove this layer. Otherwise, the enamel will lay unevenly and begin to crack over time.
Before use, it is recommended to stir the composition until homogeneous. This material can be applied in the same way as regular paint: by brush, roller or spray gun. To increase the adhesion of the paint, the surface should be treated with enamel in one layer. But to enhance protection, this composition should be applied at least 2-4 times.
Criteria for choosing an enamel primer
When choosing an anti-corrosion enamel, the following circumstances should be considered:
- The type of material processed. The scope of application of the mixture depends on the enamel base. Some formulations can only be applied to a specific type of metal. In particular, water- or oil-based mixtures are recommended for this material.
- Scope. If you need to paint metal located on the street, you need to purchase mixtures that can withstand the effects of precipitation, sunlight and temperature extremes.
- Lifetime.Quality products retain their original characteristics for five years.
- Application process. Some enamels are not suitable for spray guns.
- The nature of the request. If you plan to paint over enamel, the primer must meet this requirement.
It is also recommended to pay attention to the composition. Primer enamels should contain alkyd varnish, modifiers and organic components that prevent the formation of rust.
Main Manufacturers
Quality enamels for rust are produced by the following manufacturers:
- "Nevbytkhim". This company produces enamels in containers of different sizes. Products from "Nevbythim" are distinguished by good covering ability, elasticity and durability. At the same time, the enamel of this brand has a pungent smell, which is why the stain can only be used for outdoor work. In addition, Nevbythima solvent is needed to dilute the initial mixture.
- "Prestige". This manufacturer mainly produces small volume mixtures. Products of this brand have good anti-corrosion properties, but have a pungent smell.
- "Lakra". Economical and quick-drying products are produced under this brand. However, the Lakra company produces enamel in a narrow color palette.
Also, for painting metal products with rust, you can consider products from the brands "Rainbow", "Tex" and Dali.
Reviews of the best brands of primer enamels
The presented list of the best dyes with anti-corrosion properties was compiled based on user feedback.
"Special forces"
Before applying Spetsnaz paint, the surface must be prepared more carefully than when using other compounds.
Hammerite
When using this paint, the recommendations for use should be strictly followed. The service life of the material depends on it.
"Prestige" for metal 3 in 1
It is recommended to use Prestige paint outdoors.
Metallist
It is recommended to use Metallista enamel with other paints and varnishes.
Dufa Premium Hammerlack
When buying Dufa Premium Hammerlack, you should pay attention to other paints and varnishes. This enamel does not differ in rich color.