Primers GF-021: specifications, reviews, uses, expenses

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 preparation for enamel coating.

Composition and packing

Being an alkyd primer, GF-021 densely covers the surface, but at the same time it is not absorbed into it. For this reason, and so popular primer GF-021. Manufacturer, characteristics, consumption need a separate consideration. The manufacturer is Brozex. The main composition of GF-021 is a pentaphthalic varnish and a suspension of pigments. There are also stabilizing additives, corrosion inhibitors, desiccants and solvents. Primer can be used as an additional protective coating, and as an independent layer. The consumption is not more than one hundred grams per square meter.

Main advantages

1. Reliability and durability.
2. Easy to work with.
3. Acceptable cost and availability.

Combining all the above characteristics, this type of mixture is the most affordable and reliable coating of various kinds of surfaces.

Features of priming

Before use, the material should be mixed and, if necessary, diluted to operating viscosity. Solvents, turpentine or xylene are used as the solvent. Priming is necessary at a temperature of at least +5 ° C. Surface film must be removed. Apply the primer to the surface with a brush or spray.

About advantages and disadvantages

Advantages of using GF-021 are as follows:

• The ability to save on the amount of coating material for the next layer.
• Good tolerability of temperature fluctuations between -45 and +60 ° C.
• High-quality protection against rust, rot and corrosion.
• Creation of high-quality interlayer adhesion.

Among the shortcomings of the coating, it is worth noting the large time costs required to completely dry it. Usually it takes more than a day. The composition of GF-021 is not intended for use with loose and unstable materials, since such a primer has no penetrating power.

Characteristics and method of storage

Primer GF-021 technical characteristics and properties save only when properly stored. These include the content of the mixture at a normal level of humidity, the absence of direct rays and strictly in the factory container. It is also possible to store material at minus temperature. Shelf life is two years.

The GF-021 primer has the following technical characteristics .

Texture - matte or semi-glossy, homogeneous, no bundles.

Not more than one point - such adhesion is primer GF-021. GOST and TU provide a red-brown color mixture, but it is not standardized. GF-021 is also available in gray and white colors.

Non-volatility is 54-60%, flexural 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 primer are quick-drying a few others. Thus, its conditional viscosity is 80, the hardness is 0.10, and the non-volatility of substances is 60-70%. With regard to impact strength and elasticity in bending, their performance is similar.

Quality primer GF-021 technical characteristics should be high. So, the manufacturer of this material must necessarily attach to it a quality passport, a hygienic certificate and a certificate of conformity. These documents serve as proof that the base for the primer was high-quality raw materials, which was pre-tested.

Supplies of GF-021 are produced in industrial packaging 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 banks are used, containing up to 2.8 kg of the mixture "GF-021 primer". Technical characteristics of it are maintained by each enterprise in accordance with the requirements of GOST, so the material produced at different plants has no significant differences and is almost identical. The difference, as a rule, is the norms of expenditure, which directly proportional to the price per kilogram of output. Other factors that determine this indicator are the manufacturer's reputation and the volume of the mixture.

Preparatory work before application of soil

When it comes to this mixture, the technical characteristics and application of the GF-021 primer are not the only topical issues. It is also necessary to know about compatible types of enamel, which will be applied next layer on top of the primer. In this case, the types are as follows: АУ, КФ, МА, ХВ, МС, ПЭ, УР, ЭП, ЭТ, ХС.

Primer serves as a suitable replacement for coloration, since it falls on the metal with an even and durable layer. Another advantageous advantage of using this mixture is the absence of sticking during grinding.

Before proceeding to the primer, the liquid should be mixed and achieved its uniform density. The film, if it has formed, must be completely removed. The surface of the metal should be degreased or mechanically ground beforehand. Since the smoothness of the surface directly affects the quality of the primer, 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 douche method. In this case, the primer is applied smoothly in two thin layers with a total thickness of not more than 25 μm.

This mixture is characterized by a characteristic sharp odor, for this reason it is necessary to work with it using gloves in well ventilated rooms. Strongly it is contraindicated to use a primer near the fire, since the product is easily flammable.

Shortly after application, the primer hardens and becomes opaque. In case the enamel is to be applied after the primer, the primed area should be treated with sandpaper and further processed only after the required area has become completely smooth.

These are the positive soil GF-021 21 characteristics, experience of application. The consumers' feedback on this mixture is generally positive. And it is not surprising, because this material is suitable for use by both masters and non-professionals. Positive feedback relates, as a rule, to rapid drying of the applied coating, its durability, resistance to corrosion and a more democratic cost in comparison with analogues. Many people also note the fact of a great similarity of the soil with paint, so they agree that there is no need to purchase it.

conclusions

The use of this type of soil provides long-term protection of any wood or metal surfaces. And all this thanks to improved adhesion of the finish coat with the surface. Another advantage of the material is the considerable savings on the dyeing agents. Coating with a primer practically does not differ from the painting either visually or in terms of durability.