GF-021 is a universal tool suitable for working with wood, metal, plastic, plywood, MDF and many other types of materials. The purpose of its application is to protect the surface from moisture or to prepare for enamel coating.
Composition and packaging
Being an alkyd primer, GF-021 tightly covers the surface, but at the same time does not absorb it. For this reason, the primer GF-021 is so popular. The manufacturer, characteristics, consumption need a separate consideration. The manufacturer is the company "Brosex". The main composition of GF-021 is pentaphthalic varnish and a suspension of pigments. Stabilizing additives, corrosion inhibitors, desiccants and solvents are also present. The primer can be used as an additional protective coating, or as an independent layer. Consumption is not more than one hundred grams per square meter.
Main advantages
- Reliability and durability.
- Simplicity in work.
- Reasonable cost and availability.
Combining all of the above characteristics, this type of mixture is the most affordable and reliable coating of various kinds of surfaces.
Features of using a primer
Before use, the material should be mixed and, if necessary, diluted to a working viscosity. The solvent used is solvent, turpentine or xylene. Primer must be at a temperature of at least +5 ° C. The surface film must be removed. Apply the primer to the surface with a brush or spray.
About the advantages and disadvantages
The advantages of using GF-021 are as follows:
- The opportunity to save on the amount of coating material for the next layer.
- Good tolerance of temperature fluctuations between -45 and +60 ° C.
- Quality protection against rust, rot and corrosion.
- Creating high-quality interlayer adhesion.
Among the disadvantages of the coating, it should be noted the large time required for its complete drying. It usually takes more than a day. The composition of the GF-021 is not designed to work with loose and fragile materials, since such a primer does not have penetrating ability.
Characteristics and storage method
Primer GF-021 retains its technical specifications and properties only when stored properly. These include the content of the mixture at a normal level of humidity, the absence of direct rays and strictly in the factory packaging. Storage of material at subzero temperatures is also acceptable. Shelf life is two years.
Primer GF-021 specifications has the following.
The texture is matte or semi-gloss, homogeneous, no delamination.
No more than one point - GF-021 primer has such adhesion. GOST and TU provide for the red-brown color of the mixture, but it is not standardized. GF-021 is also available in gray and white.
Non-volatility is 54-60%, bending elasticity is 0.01 m, impact strength is 0.5 m, conditional viscosity is 45, hardness is 0.35, and density is about one kilogram per liter.
The drying process to the third degree at room temperature takes no more than 12 hours.
Some technical characteristics of the GF-021 quick-drying primer are somewhat different. So, its conditional viscosity is 80, hardness - 0.10, and non-volatility of substances - 60-70%. As for impact strength and bending elasticity, their performance is similar.
High-quality primer GF-021 technical characteristics should be high. So, the manufacturer of this material is required to attach a quality certificate, a hygiene certificate and a certificate of conformity to it. These documents serve as proof that the basis for the primer was high quality raw materials that have passed preliminary testing.
Deliveries of GF-021 are made in industrial containers or retail. In the first case, the primer is placed in metal containers, the weight of the composition is from 25 to 250 kg. In the second case, cans are used that contain up to 2.8 kg of the GF-021 primer mixture. Its technical characteristics are maintained by each enterprise in accordance with the requirements of GOST, thus, the material produced at different plants has no significant differences and is almost identical. The difference, as a rule, lies in consumption rates, which are directly proportional to the price per kilogram of products. Other factors that determine this indicator are the reputation of the manufacturer and the volume of the mixture.
Preparatory work before applying the primer
If it comes to this mixture, the technical characteristics and application of the primer GF-021 are not the only pressing issues. You must also be aware of the types of enamel compatible with it, which will be applied with the next layer on top of the primer. In this case, the types are as follows: AU, KF, MA, XB, MS, PE, UR, EP, ET, XC.
The primer serves as a suitable substitute for painting, as it lays on the metal with an even and durable layer. Another advantage of using this mixture is the absence of sticking during grinding.
Before starting the primer, the liquid should be mixed and achieve its uniform density. The film, if it has formed, must be completely removed. The surface of the metal should be pre-degreased or sanded mechanically. Since the quality of the primer directly depends on the smoothness of the surface, you need to make sure that there are no cracks and protruding edges.
There are several effective ways of applying GF-021, namely: spray gun, roller, brush or dousing method. In this case, the primer is applied smoothly in two thin layers with a total thickness of not more than 25 microns.
This mixture has a characteristic pungent odor, for this reason it is necessary to work with it using gloves in well-ventilated rooms. It is strictly contraindicated to use a primer near a fire, as the product is easily flammable.
Soon after application, the primer hardens and becomes dull. If it is necessary to apply enamel after the primer, the primed area should be treated with sandpaper and subjected to further processing only after the necessary area has become completely smooth.
These are the positive soil GF-021 21 characteristics, application experience. Customer feedback on this mixture is generally positive. And no wonder, because this material is suitable for use by both craftsmen and lay people. Positive reviews relate, as a rule, to the quick drying of the applied coating, its durability, corrosion resistance and more affordable cost in comparison with analogues. Many note the fact of a great similarity of the soil with the paint, therefore they agree that there is no longer a need for its acquisition.
findings
The use of this type of soil provides long-term protection of any wooden or metal surfaces. And all this thanks to improved adhesion of the finish coating to the surface. Another advantage of the material is that it saves a lot on coloring agents. Primer coating is practically no different from staining visually or in terms of durability.