Primer GF-021 — universal. It is used for different types of materials and surfaces: metal, plastic, plywood, wood, chipboard, MDF. With its help the surface prepared for subsequent coating with enamels or simply protected, protecting from moisture or rust.
GF-021 composition is a suspension of pigments in pentaphthalic varnish. The composition also includes solvents, driers, corrosion inhibitors and stabilizing additives. The primer is of the alkyd (glyphthalic) type and does not absorb into the surface to be coated (even wood), but creates an even, thin, even, uniform protective layer. It is also suitable for application as an independent protective layer.
The material is popular because:
- easy to use;
- durable and reliable;
- accessible and inexpensive.
Advantages and disadvantages
Advantages of glypthal primer:
- Creation of high-quality additional anti-corrosion protection;
- Improving interlayer adhesion - between a wooden or metal surface and enamel;
- Reducing the consumption of coating materials applied as the next layer;
- Resistance to temperature fluctuations within -45 - +60 °C.
The primer is quick-drying - the drying time of one layer declared by the manufacturers is 24 hours at a temperature of +20 °C. However, in practice, the primer takes longer to dry and is sensitive to lower temperatures during this period - this is its main drawback. The product is also not a penetrating primer, that is, it does not fix loose materials and fragile surfaces.
Surface priming
Before applying the primer to the surface, there is some work that needs to be done. To begin with, dirt and traces of corrosion are removed from the surface . Sanding paper or mesh is widely used for this. After this, the surface is washed with water and degreased. It is recommended to use a solvent used to dilute the primer as a degreaser. This will ensure its reliable adhesion to the structure.
Metal primer GF 021 must be applied very carefully. It is prohibited to do this near an open flame, or to smoke while working . It is better to carry out work in well-ventilated areas. The solution is applied in two layers. As a result, the consumption of GF 021 primer per 1 m2 increases slightly. When the first layer dries, it is treated with sandpaper. Only after this can the second layer be applied. Rollers and brushes are used to apply the solution. After use, all instruments are thoroughly washed in solvents.
The consumption rate of GF 021 primer is from 60 to 160 grams per square meter. In this case, the condition of the treated surface is taken into account. If the surface has significant defects, then the consumption rate of GF 021 primer will increase slightly.
Metal primer GF 021 dries within 24 hours . In this case, the external temperature is taken into account. The coating dries within 24 hours if the air temperature is 20 degrees. But, if the temperature is increased, the drying time will be significantly reduced. So, at a temperature of 105 degrees, the primer dries in just half an hour.
Properties, technical specifications
The soil properties specified in the documents will only be preserved if stored correctly. It should be stored only in the original sealed container, in a place where there is a normal level of humidity and there is no direct sun. The material is resistant to sub-zero temperatures and can be stored even at -20 °C. The shelf life guaranteed by the manufacturers
Technical characteristics of the GF-021 primer are given in the table:
| Film color and texture. Film appearance | Red-brown (gray, white), semi-gloss or matte texture. Homogeneous, smooth, without delaminations and craters |
| Grinding degree | 40 µm |
| Conditional viscosity | 45 |
| Drying time to the third degree at a temperature of 20? C | 12 hours |
| Flexural elasticity | 1 mm |
| Impact strength | 50 cm |
| Film hardness | 0,35 |
| Film adhesion | no more than 1 point |
| Film resistance to static liquid exposure 20? C | |
| sodium chloride/mineral oils | at least 24/48 hours |
| density | 1.25-1.3 kg/l |
| Consumption per layer | 60-100 grams per square meter |
| Non-volatile substances,% | 54-60 |
Primer and composition properties
GF 021 is a universal suspension (in other words, a liquid in which components of varying hardness are suspended), including:
- Alkyd varnish;
- Mineral substances;
- Stabilizing substances;
- Drying agent;
- Dyes.
Primer GF 021 universal Manufacturers offer primer in gray and red-brown colors. All deliveries are confirmed by certificates of conformity and hygiene, as well as a quality certificate. The mixture, depending on the purpose (household or industrial), is supplied in the following metal containers: cans (0.9 and 2.5 liters; there are also 1, 2, 3), bucket (~ 30 kg), drum (~ 60 kg).
Manufacturers and prices
The universal primer GF-021 GOST 25129 is offered by Omega, Lakra, Tex, Unisil, Prestige, Autotrade and Zebra. The material produced in accordance with GOST is red-brown, and the shade is not standardized. However, they sell soil in both gray and white colors (they are produced according to specifications).
For each batch of primer, the manufacturer must include
, hygienic certificate, quality certificate. The documents confirm that high-quality raw materials were used in the soil production process and that the resulting material complies with regulatory requirements. And since the raw materials are used domestically, the cost of the material is affordable.
GF-021 soil can be supplied in retail or industrial containers - 0.9 cans; 2.8 kg or metal containers 25; 50; 250 kg respectively.
Each plant maintains the technical characteristics of the material in accordance with the technical conditions (TU) or GOST, so they will be almost identical in each case. Consumption rates may differ - depending on this, the price is set (it varies between 45-85 rubles per kilogram). The cost is also affected by the popularity of the manufacturer and the volume of the container.
GOST primer GF-021
The technical characteristics and advantages of this primer correspond to reality only when it is produced in accordance with GOST. Such products are marked with relevant certificates and additional documents. Among them:
- Certificate of conformity
- Quality passport
- Hygienic certificate
These documents prove the high quality of the product and that it was produced in accordance with the stated recipe and technology.
For the GF-021 primer, there is a corresponding GOST 25129. Products based on it are manufactured by Zebra, Autotrade, Tex, Lakra, Unisil and others. A characteristic difference that complies with GOST is the red-brown color of the substance. The shade is not standardized and depends on production conditions.
Important! Primer is available in the market in gray and white. This is not always a fake; such products are produced depending on technical conditions.
A characteristic feature of GOST is that the primer is prepared using alkyd film formers. Since this substance is expensive, petroleum-polymer drying oils are used in counterfeits. At the same time, adhesion becomes significantly worse, which also applies to anti-corrosion properties.
Rules for preparing surfaces for priming
Primer GF-021 is needed for preparation for subsequent application of enamel. Recommended compatible materials for the primer film are enamels of types UR, HV, PE, HS, EP, ET, MCh KF, MS, NTs, PF, MA, AU.
For metal surfaces (structures of industrial facilities, garages, support poles), a primer can also replace painting, thanks to the formation of a uniform, durable layer of gray or brown color. The resulting film lends itself well to sanding without the sandpaper sticking.
Before priming the product, the following preparatory work is carried out:
- The primer is mixed so that its density is uniform and diluted with a solvent. If a dense film forms, it is removed from the soil surface.
- Before painting, the metal surface is treated with sandpaper or special compounds and degreased. If an old metal part is being processed, it is advisable to remove rust from it mechanically.
- The surfaces to be primed must be free of cracks, protruding welds, burrs and sharp edges.
Primer Features
The primed surface guarantees the quality and durability of the finish . The primer solution is in some way a binding agent between the paint and the surface. It also protects the structure from negative environmental factors.
Today there is a large selection of soil solutions on the market. Depending on the scope of application, the primer can be:
- for interior work;
- for external work;
- universal.
Moreover, all these materials are divided into solutions of deep as well as surface penetration . As for the GF 021 primer, it is a common material that is used to prepare the surface for painting work. It belongs to general purpose . This means that it can be used for finishing both external and internal structures, regardless of the material of manufacture.
Primer GF 021 is used for processing metal, wood and plastic structures. It easily tolerates temperature changes. The solution has a thick consistency, which allows it to be used to repair small cracks and defects . The primer coating reliably protects the finishing coat from the negative effects of ultraviolet radiation and moisture.
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Carrying out priming work - the main nuances
The instructions regulating the use of GF-021 primer specify that the material can be applied with a roller, brush or spray gun, as well as by pouring or jetting. Apply the primer in 2 layers in a thin layer, smoothly, without sharp strokes. In this case, usually the total thickness of the coating does not exceed 18-25 microns.
Work on both metal and wood is carried out only in rooms with good ventilation, since the material has a pungent odor. For safety, gloves are also used, since the material is dangerous for the skin and mucous membranes (this only applies to liquid soil, not dried film). It is not allowed to carry out work near an open flame (the product is flammable) and at temperatures below +5? C.
The applied primer becomes matte after drying. It can be used as a base layer or enamel applied on top. Before further coating, the primed surface is sanded with P600 or P800 sandpaper - the surface becomes smooth and the paint applies without defects.
Composition of the substance
Primer GF 021 consists of almost 60% pigments and mineral fillers . It contains solvents, corrosion inhibitors, and stabilizers that improve the adhesion of the material to the surface. This composition allows you to create a uniform and even coating . Before use, the primer is diluted with a solvent. In this case, white spirit will be the optimal solution.
The substance is supplied to the market in containers of various sizes. For household purposes, containers whose volume does not exceed 2.8 kg are used. If you need to treat a large surface area, then it is better to pay attention to the primer in large containers, the volume of which is 25 or 50 kg.
To preserve all the technical characteristics of a substance, it is necessary to properly approach its storage. The primer should be stored in a closed container away from devices that emit heat energy. You should also avoid damp rooms and places that are in direct sunlight.
According to the information printed on the container, GF 021 metal primer has a service life of 1 year. In this case, a film may form on its surface. Before use, the film is removed and the substance is thoroughly mixed. If necessary, the solution is stirred with a solvent.
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