The performance of work related to painting any surface is a responsible occupation that requires certain knowledge and experience in their implementation. The primers in the spray can facilitate the process, but how smoothly the paint layer lies and how effective the surface protection against destruction will depend on the quality of their application. Several products deserve special attention.
Restoration of plastic products
The priming of plastic products is necessary to perform operations such as filling scratches, microcracks and minor dents or indentations on their surface. The primer in spray cans designed for plastic work differs significantly from other formulations that are applied to metal. It also provides reliable adhesion of the paint to the treated part, but this material, unlike the others, has plasticity.
The developers created this tool specifically for the processing of plastic products. They include not only furniture. This composition is very popular in auto repair shops when processing:
- bumpers;
- spoilers;
- mirror housings;
- moldings;
- dashboards.
In everyday life, such a primer is coated with plastic products used in the household, the paint on which should be kept for a long time. It can be plastic pipes, decor elements, furniture structures, fences. This composition is designed specifically for use before painting products from a wide variety of types of plastic, on which the paint should lie flat, but they can not be processed by other means.
Conventional primers cannot protect the product. They only provide good adhesion of the special paint created for application on precisely such surfaces. There are paints and varnishes created for painting plastic pipes or furniture without first priming, but their price is quite high, and such costs are not always justified.
to contents ↑Work with aluminum
Painting parts made of aluminum is associated with certain difficulties, since on parts or objects made of this lightweight but durable metal, the paint holds rather poorly. Like plastic objects, aluminum structural elements or car body parts require preliminary priming, without which after some time the applied paint will simply begin to crack and peel.
It is not necessary to leave aluminum parts without painting, since a feature of this metal is the formation of an oxide film. This is directly related to the chemical activity of this metal. However, the rest of its qualities suit the manufacturers so much that it is used in the automotive industry for the manufacture of carburetors, various engine blocks and heads.
The application of soil to the components and parts of the vehicle made of aluminum is mandatory. Soil in this case performs a protective function.
The paint, which is coated with certain aluminum elements and structural components, has a specially developed composition and is intended not only to improve the appearance of the product, but to protect it from oxidation and prevent the part from malfunctioning.
to contents ↑Some special primers
A variety of works, during which the most diverse paint is used, requires the presence of many special primers. Parts and components made of plastic and aluminum, cast iron and various alloys are treated with spraying soil. Carrying out bodywork related to painting requires the use of several types of primer. The most popular among them are:
- Based on resins. Epoxy primer in the spray can is a composition that has earned the trust of both amateur car owners and professional masters. The thin, but extremely durable film formed by this compound when applied to the surface of the car body provides reliable mechanical protection. This primer noticeably increases adhesion, protects the surface not only from corrosion, but also from mechanical damage, qualitatively fills microcracks and scratches.
- Etching. Also called acid soil. Its use while working with plastic elements is strictly prohibited. A feature is the ability to corrode the thinnest layer of metal from which the car body is made. This is possible due to the presence of a special acid in the primer mixture. Acidic soil is a special composition. Its distinctive feature is that it is intended only for initial application directly to a metal surface. Application of materials such as putty on it is strictly prohibited. For further work, additional priming is necessary. Application from a spray can of a composition such as acid primer is necessary to provide a stronger adhesion of the paint layer to the surface of the part and to prevent corrosion.
- Firming. So you can call the primer composition used in car repair shops when performing work related to aligning dents and indentations on the car body. Such a composition is applied from the spray can in several layers until the crack, scratch or dent is completely filled. Its characteristic feature is increased adhesion.
- Tread protection. The primer spray contains particles of aluminum, zinc or other metals, the peculiarity of which is a negative potential compared to iron. Under the influence of an aggressive environment, such an additive in the soil simply dissolves without endangering the surface of the car body. Each additive included in such a primer is characterized by a high level of corrosion resistance.
- Anticorrosive. Such a tool is most popular and in demand. The compositions are applied directly from the can to the metal, providing reliable protection against corrosion. Thanks to such primers, paint for metal, which is applied on top of the soil, has a reliable adhesion to the surface.
- For plastic. Decorative plastic parts are coated with a single-component primer contained in an aerosol can. They do not require additional mixing and pre-cooking. Synthetic primer designed for application on plastic parts, designed for use in coating a small area. It can be a bumper or a spoiler
- Based on acrylic. Acrylic primer is an aerosol primer used for application to a wide variety of surfaces. It could be:
- plastic;
- steel;
- putty for metal;
- aluminum parts;
- chrome or galvanized surfaces;
- paint;
- light alloys.
Acrylic soil is heat and moisture resistant, it is resistant to adverse weather conditions. It is characterized by a long service life. This composition has established itself as a high-quality, reliable, effective. However, to apply to parts made of ferrous metals, galvanized or chrome-plated steel, only an acid primer is required.
Among the listed compositions for priming various surfaces, only reliable and high-quality soils. The choice of one or more compounds for performing surface restoration or bodywork is based on a precise definition of the purpose. The right choice will depend on how accurately all the distinguishing features and characteristics of each of the presented compositions are known to the motorist.
