Two-component paint for metal - advantages and disadvantages
Paints for repair and construction work are one from basic materials, because they provide a uniform coating on almost all types of surfaces.
They are very convenient to use, because each person will be able to update the interior in their own private house or apartment, creating a design according to their own taste and preferences.
So, it is worth considering the features of two-component paints.
Paints and varnishes polyurethane materials represent a huge group of polymers. The main ingredient is polyols.
The next component of such products will be hardeners. Due to the binding of the molecules of the components of the paint and varnish material, a film appears that is resistant to acids, moisture, various organic oils and gasoline. For this reason, polyurethane paint will have a number of protective properties, for which they will withstand aggressive atmospheric effects on the surface for a long time. A similar suspension is used for interior and exterior decoration, as well as for painting various structures. The paint has a wide temperature range of application, from +155 degrees to -40 degrees.
The main features of the composition will be high technical compositions, among which it will be possible to note:
To obtain the required color and shade, a coloring pigment is used.
Due to its unique properties, polyurethane paint will stand above other types of paint and varnish material.
There are many excellent qualities due to which the widespread use of such dyes will become possible:
But among the disadvantages of polyurethane coloring compositions, one can single out their high cost compared to other paints and varnishes, as well as a small selection of options that are presented on the market in this category. There are not so many such products on the shelves of supermarkets, and therefore it can be extremely difficult to buy those that are optimal in all characteristics.
According to the composition, polyurethane paints and varnishes can be divided into 2 groups:
One of the cans of the two-component type contains a hardener, and another one contains resin.
This variety is much different and will have excellent resistance to external aggressive factors that affect the surface. The composition is grabbed without the participation of water vapor, which can greatly expand the range of application of the product. To process the base with two-component materials, you can mix only the required amount of paintwork materials, and apply everything else later
Classification of one-component coatings by the type of base
In order to be able to classify one-component type paints, they can be divided into three categories:
In the composition of polyurethane-type paints of the first category, in addition to the main elements, toluene or xylene is included. To dilute such materials, special solvents are available. The solid state of the paint will be achieved due to the reaction of the ingredients with moisture from the air. For this reason, the time required for this type of paint to dry completely will depend on the level of moisture in the room. The second type will have an alkyd-urethane varnish composition in the composition, and a distinctive feature of the paint will be a short drying time, and usually is 1.
5 hours. White spirit is bought as a solvent for alkyd-urethane products.
The last type will have this name due to the solvent used for such products - ordinary water is required during the work. Water-dispersion type paints are odorless and harmless to humans; when painting the surface with this agent, there is no need to use additional protective agents. They will be seized due to the moisture in the air.
Please note that it is worth considering the existence of one-component formulations that have a short service life - about 6 months. When purchasing such paints, it will not be superfluous to pay attention to this feature.
Epoxy-polyurethane and powder paints
Another type of polyurethane-type product for painting is worth highlighting - powder compositions. They are manufactured as a homogenized mixture of pigment, hardener, filler and polyester resin. This type belongs to thermosetting coloring substances.
They can be used to process a product / base, and then they undergo heat treatment, and as a result, a reaction occurs between the components that will be fused with each other. The result of this work will be a hard and durable coating. It is for this reason that powder paints are most often used for work with mechanical engineering. Epoxy-polyurethane paint will be very resistant, and therefore it is used in the industry for the treatment of various structures that will come into contact with aggressive media to provide them with an excellent level of protection.
Classification by application method
Polyurethane compounds can also be divided into groups according to the method of application to the surface:
The first group of paints and varnishes is used for products and metal surfaces. Car polyurethane paint in cylinders forms a uniform coating, which will be completely free of streaks and smudges. The composition, which should be applied by means of a painting tool (rubber or velor rollers, brushes), is mainly bought for interior decoration. There are also two-component polyurethane-type paints for painting plastic - this is the main water-based paint coating used for industrial painting of products.
The main manufacturers of polyurethane compositions for painting are Germany, Turkey, Greece and the countries of the former CIS. But then if there is a need to buy polyurethane varnish. Paints or enamels, you can safely give preference to domestic products in this matter, because these paints and varnishes consist of complex polymers, which are successfully produced in Russia. Such trade marks as "Krasko", "Elakor", and also "Promtekhsnab" have proved to be excellent in their work. There is no doubt about the positive characteristics of Russian paint and varnish products, because they undergo thorough quality control, are certified and have all permits.
Products made to China are no less popular in the market. It is presented as a polyurethane compound for car paints, concrete and wood substrates, and there are excellent furniture paints in the range.
American paint products are represented by the Valsrap brand.The concern of the same name has been manufacturing paints and varnishes for many years, and the release takes place using an original technology for mixing coloring and binding components. The composition will have many positive reviews, because it is easy to apply, forms a durable and thin layer with a matte or glossy sheen.
Such paint will not crack and does not contain compounds harmful to health. Such products are used for painting special equipment, metal structures, boats, as well as furniture and interior items.
The company from Europe Milesi is a leader in the production of quality varnishes for wood surfaces. Most furniture manufacturers will prefer the products of just such a company, because the surface coated with polyurethane varnish has excellent physical and chemical resistance and maintain an excellent appearance. These varnishes can be used for all types of finishes, including solid MDF and doors.
Buyers noted a wide range of colors, which will allow you to choose the desired color. Sikkens paints and varnishes are popular two-component paints for concrete and metal surfaces. As a result of the use of such a material, the objects, structures or bases to be painted will acquire an excellent glossy or matte appearance.
Each type of surface needs a certain type of paint to paint. In order to choose the right composition, you need to decide on the types of bases for painting, as well as the features of the room in which the work will be carried out.
Concrete flooring paints are used not only inside buildings, but also in outdoor conditions, which means that air humidity, as well as precipitation and the level of mechanical impact on the coating, should be taken into account.
It is for this reason that the choice of the coloring composition is made according to the following criteria:
- Humidity level.
- Ideal application times.
- The intensity of the mechanical type of impact on the surface.
The choice of paint for wood flooring is carried out taking into account the following characteristics of wood and coloring composition:
A brush is indispensable for painting wood substrates. To paint the concrete, a roller is required, due to which the coating will be smooth and even. Two-component paint for metal will in many respects surpass the rest of the coloring compositions.
Excellent surface appearance, durability and stability are the main advantages of this type of paints and varnishes. based on this, we can confidently assume that the range of paints on the construction market will only increase.
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