Primer for aluminum: detailed briefing

As you know, aluminum is difficult to color, it's because its coating is very smooth. The more complex the surface structure, the more rough it is, and the area of contact with the material is larger. This characteristic is called the strength of the connection to peel. The problem of the complex application of the protective composition to the surface can be solved in two ways, one of which involves coarse grinding, while the other involves acid etching. The most common way to prepare the described surface for further decoration is to apply a primer.

Characteristics of VL-02

Primer for aluminum VL-02 is a mixture of domestic production and manufactured by state standards. In its composition - the base in the form of a suspension of zinc crown and acid diluent. The first ingredient is an anticorrosive pigment of yellow color, due to which the soil receives the quality of adhesion to complex surfaces. Among the additional characteristics of the base are impact strength and elasticity. As for the acid diluent, it is an alcohol in an aqueous solution of orthophosphoric acid. It guarantees etching of the aluminum surface during machining.

Features of application

In order to use the above-described primer for aluminum, it must be mixed and poured into acid-proof containers, this can be a glass or polyethylene container. For 4 parts by weight of the base, one part of the acid diluent should be added. The resulting composition should be aged for half an hour, after which it must be well mixed. Extract is required to maximize the dissolution of polyvinyl butyral in an alcohol base. It is resistant to water, oxygen, but not alcohol. Shelf life of such soil is 8 hours. This mixture is applied to the surface for painting with a thin layer, which can reach a limit of 6 to 8 μm. Use this can be a brush or a nebulizer. The drying phase will not take more than an hour. Pay for a kilogram of this composition will have about 110 rubles.

Features of the ground "Nerzhalux"

If you choose a primer for aluminum, you can prefer "Nerzhalux", which is an acrylic adhesive mixture for non-ferrous metals and aluminum. Among its characteristics:

• Reliable adhesion to the finish coat;
• water resistance;
• Weather resistance;
• Increased adhesion to metals;
• Short drying.

With the help of "Nerzhalux" you can cover not only aluminum, but also galvanized surfaces, as well as aluminum alloys. This one-component primer is intended for both black and non-ferrous metals based on modified acrylic copolymers. The mixture is used for preliminary preparation of products from stainless and carbon steel, magnesium, aluminum, galvanized and titanium surfaces. This primer for aluminum can provide strength of adhesion of materials, resistance to water and steam, lubricants, mineral oils, sea water, kerosene, gasoline and other petroleum products. The mixture will also help if aggressive gases, salts, solutions of acids and alkalis are applied to the surface during operation. This acrylic composition is used to obtain a complex anticorrosion protection of the bases of building structures, which include:

• Galvanized roofing;
• Metal coatings;
• Domes;
• Hangars;
• Galvanized profile;
• Gutter gutters;
• Details of machines and other metal products.

Method of use

Before using the primer "Nerzhalux", mix well until smooth. The application should be carried out on a dry surface, which was previously cleaned of rust, dust, dirt and oil. If rust is present on the surface, it should be cleaned to the Sa 21/2 level, using the abrasive blasting method. When applying, you can use a roller, brush, airless spray or a pneumatic tool. If necessary, the primer can be diluted to operating viscosity, while using solvents P-648 or P-5A.

Temperature conditions

The above-described alumina for boats will dry up to 3 degrees within half an hour, but only if the room temperature is maintained within 20 ° C. After drying at a temperature of 20 ° C, the following layers of varnish and paintwork materials can be applied. It is necessary to use the soil in the temperature range from +5 to +30 ° C, while the room should have a relative humidity of air that does not exceed 80%.

Consumption and precautionary measures

Before purchasing a primer, it is important to familiarize yourself with the consumption of the composition, which can vary from 80 to 120 g / m ² , this is true if the thickness of one layer is equal to the limit of 8 to 15 μm. Professionals advise to apply about 2 layers. On sale you can find this primer, which is presented in a yellow base color. When applying this primer, it is important to observe precautions. When performing internal work and after their completion, it is necessary to ventilate the room, and during the application of the mixture, personal protective equipment should be used. The cost of one kilogram of such a primer is 233 rubles.

Description of the soil Body 960 Wash Primer

Such a primer for aluminum (aerosol) is more easy to use. For example, the Body 960 Wash Primer is sold in different packages, including in the form of an aerosol. The mixture is a high quality anticorrosive acid-curing primer, which is produced on a polyvinyl butyl base. It is to be mixed with the activator and is intended for complete and topical application. With its help, it is possible to etch rust and not allow it to spread further. This mixture has a high adhesion quality with non-ferrous metals. After the drying phase is completed, it guarantees anti-corrosion protection of the surface. Drying of the applied layer takes place in 10 minutes, after which the substrate does not require any grinding and must be painted with any two-component mixtures. With this primer it is possible to protect aluminum from salt, moisture, and also give the surface characteristics of resistance to atmospheric, mechanical and chemical influences.

special instructions

Soil on aluminum Body 960 can be dried by air method, in which the minimum temperature should be 15 ° C. Do not use the method "wet on wet" when applying this composition. It is not recommended to apply to the acid primer materials on a polyester basis, among which, for example, putty. If, after the work is completed, about an hour has passed, the soil is to be treated with an adhesive tape primer, which will improve the quality of adhesion.

Features of use

The above-described acid primer for aluminum should be mixed before use until a uniform consistency is obtained. The mixture is toxic, therefore precautions should be taken. At 20 ° C, the surface will reach a density of 0.85 kg / l. One liter of the mixture will be sufficient for 10 m ^{2 of the} base, which is true if the layer thickness is 10 μm.

Quality of alkyd enamel-primer

Primer-enamel on aluminum is on sale in the form of an alkyd mixture of PF-115. It has a high adhesivity to metals, and also has the quality of resistance to any atmospheric influences. After drying on the surface can affect the fuel and lubricants. Between the layers should be maintained time, which will take until the surface dries completely. If the paint is too thick, the drying period can last for 5 days.

Conclusion

By the way, it can be noted that not only the AL-02 aluminum primer, but also other effective compounds can be used to protect the described surfaces. Which one to choose is up to you.