Metal varnish: types and rules for selecting anti-corrosion, colorless and waterproof varnish for metal products

Metal structures are among the most durable among systems, as well as structures made from other materials. The metal withstands shock, stretching, twisting, static and dynamic loads well. However, the material still has a weak point. Under the influence of water and other natural and man-made factors, metal structures corrode and lose strength. The most reliable means of protection against corrosion is varnish. LMs for metal have different compositions, are used in different ways, and demonstrate advantages.

Features of metal varnish

For a deeper understanding of this issue, it is necessary to study all the features of the product and its purpose.

It was previously said that this varnish is intended to protect steel surfaces from various influences (mechanical, atmospheric).

Its composition makes it possible to use the metal for a long time without additional treatments, which makes the mixture attractive.

Overall, there are several distinctive characteristics, including:

• Manufacturers of each model provide for the presence of substances in the composition that can provide protection against corrosion processes.
• High-tech production makes the solution more durable and wear-resistant.
• A paint product of this type will help slow down the aging process of the material, which significantly extends its service life.
• The ingress of all types of precipitation and humidity is excluded. This is due to the fact that the varnish is made using active chemicals.
• The use of antiseptic agents disinfects the surface and prevents the appearance of harmful bacteria.

PAINTER'S TOUCH ULTRA COVER 2X CLEAR SPRAY

PROTECTIVE CLEAR COAT – Acrylic clear coat with silica to protect painted surfaces.

MATERIAL CHARACTERISTICS

• UV-resistant, will protect the surface from fading;
• has unsurpassed covering power due to the high binder content;
• provides long-term protection and wear resistance;
• creates a smooth, durable transparent coating;
• the new, unique spray button system allows you to comfortably paint the surface at any angle, even upside down, minimizing finger fatigue;
• quick-drying;
• easy to apply;
• For interior and exterior use.

ADHESION:

Excellent adhesion to new or previously painted wood, metal, unglazed ceramics, concrete, plaster, brickwork, etc.

Restrictions:

Do not apply to surfaces heated above 93°C or to galvanized metal surfaces.

POSSIBLE APPLICATIONS:

serves both to protect surfaces painted with enamels, decorative paints, etc., and as an independent coating.

VISUAL EFFECT:

dense smooth transparent coating (matte or glossy).

COMPOUND:

acrylic, amorphous silicon oxide + org. solvents

PACKAGE:

spray, net weight - 340 g

CONSUMPTION:

2 sq.m

SURFACE PREPARATION

Remove loose paint and rust with a stiff brush or 80-150 sandpaper.

Remove all sanding dust with a vacuum cleaner, then wipe with a damp, lint-free cloth and dry the surface thoroughly.

APPLICATION

Apply protective varnish outdoors or in well-ventilated areas. Apply at air and surface temperatures between 10°C and 32°C and relative humidity below 65% to ensure proper drying. Do not spray in strong winds or heavy dust. Cover all surrounding objects to protect from colorful mist.

Shake the can vigorously for 1 minute after you hear the mixing ball rolling around inside. If you cannot hear the sound of the mixing ball inside, do not start working with the spray! Shake the can frequently during application.

DRYING TIME

At 21°C and 50% relative humidity

• until sticky – 20 minutes;
• light use – 1 hour;
• re-application - within 30 minutes or after 48 hours;
• Complete drying - 24 hours.

NOTE: On plastic, maximum paint adhesion and durability is achieved after 5-7 days. Cleaning: Precautions: Do not insert a pin or other objects into the channel. Pressurized cylinder

Protect from direct sunlight and heat above 50°C. Do not pierce or burn even after use. Do not spray near open flames or hot objects. Do not smoke while working. Cylinders may only be thrown into designated areas.

FIRE HAZARD! Keep away from children!

BEST BEFORE DATE:

Types of varnish for metal

The enormous popularity of both the metal itself and the special varnish led to the emergence of various varieties and types of mixtures. Now, in specialized stores you can find a large number of models and brands.

The following varnish compositions exist:

• Bituminous. From the name it is clear that it is produced with the addition of artificial or natural bitumen. This formula creates excellent protective layers that can withstand many harmful factors. Also, experts note its ability to resist various types of mechanical stress. Overall, this is a good solution for household use, with good reviews and characteristics.
• Polyurethane. It differs in that it is used both outside and inside the building. Its use is possible even in hard-to-reach internal parts of metal structures. This is due to high adhesion rates and reliable resistance to wear and high temperatures.
• Acrylic. The addition of acrylic adds water resistance to the product, therefore, it is used in conditions where large amounts of water or moisture may enter. Also, this technology is absolutely safe in terms of fires.
• Alkyd. This variety is suitable for decorative decoration, because it not only creates a durable film, but also gives it shine. It is worth noting that it is also universal, because it can be applied to a variety of coatings and surfaces.
• Heat resistant. The name of this model makes it clear that it contains substances that further improve resistance to temperature changes.

Varieties

Spray varnish can serve different purposes depending on its type

Spray varnish can serve different purposes depending on its type:

1. Tinting varnish compositions are suitable for processing automobile bodies, individual components and parts. For example, such a mixture is suitable for tinting headlights or other parts made of glass or plastic. As a rule, tinting varnish helps protect parts from weather factors, mechanical influences and aggressive chemicals. In addition, it improves the aesthetic qualities of the car, creating the effect of novelty and shine. Also, the tinting spray perfectly protects wooden surfaces after restoration.
2. Reflective compounds in cylinders contain special particles that, in addition to a glossy shine, allow the surface to reflect light in the dark. That is why such compositions are usually used to coat parts on cars, road signs and other accessories of bicycles, helmets, etc. Such varnishes are suitable for surfaces made of steel, glass, plastic, and wood. In turn, these mixtures are divided into several subtypes depending on the special effects they can create:
   sparkle of diamonds. Such compositions give the surface incredible shine, volume and depth;
3. chameleon. This coating can change its hue at different viewing angles and lighting;
4. starry sky effect. This composition contains multi-colored microparticles that create a diffused glow on the surface.

1. Polyurethane varnish compositions. These mixtures, like Plastik acrylic varnishes from Cramolin, are designed to protect surfaces from mechanical stress, moisture, scratches, mold, and high temperatures. They are used for products made of plastic, wood, and metal. To increase the protective effect, it is recommended to apply the composition in several layers (3-4). In this case, each previous layer must dry completely, so take into account how long the varnish you choose dries. On wooden surfaces, such a varnish only emphasizes the texture of the wood and gives the product shine.

How to choose metal varnish

Today, in the market you have the opportunity to find anything. But it is not a fact that the purchase will be successful, because an unprepared person can very easily make a mistake.

Making mistakes leads to unpleasant consequences, and therefore you need to know by what parameters to select a varnish.

This list includes:

• List of technical characteristics, which is different for each model. Here, pay attention to the areas where work will be carried out and the characteristics of temperature and atmospheric conditions.
• Ability to work indoors or outdoors.
• Color palettes. This is very important for those people who want to create a design or style.
• Levels of gloss, which also constitute the decorative properties of the liquid.

Useful tips

The most important step in working with varnish is the preliminary preparation of the surface. Usually they start with grinding using a special material. It is called a grinder and is equipped with rectangular blades with rolled edges.

The surface should become absolutely flat after cleaning. But even after this, additional sanding is often required, involving the use of sandpaper. First use the coarse-grained version, and then the fine-grained version. Sandpaper is needed so that marks from cutting tools can be completely removed.

If you sand lengthwise, you will be more likely to avoid serious scratches on the surface. This applies not only to wood, but also to metal. The surface should become glossy-matte after polishing when viewed from the sunny side.

For metal, the aerosol varnishing method is most suitable. The bottle of varnish must first be heated using a special water bath. Then the graininess is reduced, and the work itself is done more accurately. Subsequent layers are applied only after the previous ones have dried well.

Benefits of using metal varnish (2 videos)

Varnish of different brands (25 photos)

Benefits of using varnish

When dealing with this liquid, you cannot ignore the beneficial qualities that it possesses.

These include:

• Low cost.
• Availability in any market.
• High resistance to humidity, sudden temperatures and water.
• Excellent resistance against corrosion.
• Creating durable layers.
• Properties of elasticity and resilience.
• High level adhesion.
• Good resistance to aggressive chemicals and liquids.
• Ability to increase service life.
• Fire safety.
• Possibility of using some models for application to car bodies.
• Good adhesion to different coatings.
• Possibility of selection in different colors, with decorative features.

Specifications

The constant and main component of varnishes is alkyd resin, which acts as a base. Among similar products, alkyd varnishes are unrivaled in terms of resistance to temperature fluctuations.

Vibration loads do not in any way affect the quality of the applied alkyd composition; in addition, the varnish does not have the adhesive qualities that many representatives of paint and varnish products have. The product is absorbed directly into the wood and does not penetrate into the floor cracks in the log house. Such product characteristics make it possible to minimize floorboard squeaks when treating the floor with an alkyd mixture.

The first alkyd-based varnish that began to be produced in Russia was the composition PF-231. The product is intended for use on all types of surfaces. One can note the visual attractiveness of the base obtained after treatment with this composition - the film evenly and neatly covers the working surface.

In addition to the positive characteristics, the composition also has some disadvantages. The main disadvantage is the short service life of the coating due to its minimal hardness. Due to this, after 2-3 years the surface of the wooden floor will have to be treated again. On other materials the composition will last many times longer.

PF 283 forms a glossy layer, notable for its decorative properties. Essentially, these products are a mixture of alkyd resin, fatty acids and natural solvents. In addition, the ingredients include a drier. Most often, such varnish is sold in a can as an aerosol of 150 ml.

PF-170 includes resin in combination with specific additives and aliphatic hydrocarbons. The composition can be used for wood, wood-containing materials, metal and ceramic substrates. In addition, bases treated with paints, enamels and primers are very often coated with a protective and decorative composition. The products are allowed for use indoors and outdoors. The varnish is manufactured in accordance with GOST, is resistant to chemical detergents and aggressive environmental factors, allows the surface to “breathe” and is very economical in terms of consumption.

Which manufacturer to choose

Nowadays, specialty stores can offer thousands of options; to choose the best one, check out the list of brands that are considered trusted and reliable.

Here you can note:

• NEOMAST – Russia
• HUSKY – Czech Republic.
• TEX – Russia.
• LEVIS - America.
• TIKKURILA – Finland.
• HAMMERITE – America.
• CERESIT - Germany.
• KUPFER - Germany.
• SIVER - Russia.
• BELCOLOR – Belarus.
• SASHKOL – Ukraine.

How to dilute it?

White spirit is used as a solvent for alkyd compositions, which begins to evaporate as soon as the composition is applied to the surface.
Then polymerization of the composition occurs. It is caused by chemical reactions between the molecules of resins and other components. To remove the varnish coating from the surface, a remover is used. It is a special chemical that destroys the varnish and lifts the film from the material. The varnish can be washed off with powder products, pastes of different consistencies, as well as by scraping or heat treatment.

Photo of the best metal varnish

How long does it take to dry?

Immediately after application, alkyd varnish looks like glue. After about 10 hours, some varnishes that have special hardeners in their composition will already harden. Typically it takes 24 hours for one coat to dry.

It is worth noting that the thickness of the varnish film after drying may become smaller, in this case it all depends on how much of the solvent has evaporated. Its content in alkyd mixtures may vary, and based on this indicator, the toxicity level of the composition increases or decreases.