Glyphthalic primer. Characteristics and application

A versatile and frequently used material in building and renovation projects is glyphthalic primer. This kind of primer, which is well-known for having strong adhesion qualities, forms a sturdy base that improves the quality and longevity of the finish that is applied on top. A glyphthalic primer can be a dependable option for ensuring that paint or other coatings adhere correctly and endure over time, whether you’re working on interior or exterior surfaces.

The capacity of glyphthalic primer to penetrate and seal porous surfaces is one of its primary features. Because of this, it works especially well on materials like plaster, metal, and wood, leaving a surface that is even and smooth for additional treatment. Because of its quick-drying characteristics, projects can be completed quickly, saving time and lowering the possibility that dust and other debris will settle on the primed surface.

Using a glyphthalic primer has several practical advantages, but it can also enhance the final finish’s overall appearance. It helps achieve a more vibrant and consistent color by forming a uniform base, which minimizes the number of coats required. This results in a more polished and professional outcome in addition to lowering material costs.

What, how and for what

Technical parameters of GF 021

Label from GF 021 can with printed specifications

  • Technical characteristics of glyphthalic primer GF-021 allow you to process structures made of lumber, as well as ferrous and non-ferrous metals, for their further processing with enamels (for painting). This composition is an alkyd varnish with a suspension of pigments and fillers, with the addition of stabilizing substances, solvents and siccative.
  • GF-021 should be stored indoors, protecting it from direct sunlight, as well as as far as possible from open fire, electrical appliances and water heating systems (boilers, radiators). It is advisable to store it in the factory container, but if you have already opened such a container, then in order to save the composition from drying out, it must be carefully sealed, stopping any access of air from the outside. The manufacturer"s warranty for the primer is 12 months from the date of its manufacture, according to GOST gliftalevuyu gruntovku GF 021 (GOST 25129-82).
Parameters GF-021 ordinary GF-021 B/S (quick-drying)
Appearance of the film coating Homogeneous, smooth, matte Homogeneous, smooth, matte
Conventional viscosity (viscometer VZ-246, nozzle 4 mm) not less than 45 45
Dilution with solvents in % not less than 20 20
Mass fraction of non-volatile substances in % From 54 to 60 From 54 to 60
Degree of grinding in µm not more than 40 40
Drying time to III degree at a temperature from 18⁰C to 22⁰C in hours 24 6
Resulting film hardness (M-3 pendulum device) in conventional units, not less than 0.35 0.35
Coating elasticity during bending in mm, not more than 1 1
Film impact resistance (U-1 device) in cm, not more than 50 50
Coating adhesion in points, not more than 1 1
Resistance to static effects (3% chloride solvent) in hours, not less 24 24
Resistance to static influence (mineral oil) at t⁰ from 18⁰C to 22⁰C in hours, no more 48 48
Delamination in ml, no more 5 5

Note: The table above illustrates that the GOST parameters for the regular and quick-drying compositions for glyphthalic primer GF-021 are nearly identical. Your decision will primarily depend on how much time you have available for painting, as the only real differences are in the drying time and product cost.

Painting works

Rust removal with a wire brush

The instructions state that the surface must be cleared of foreign objects before applying GF-021, and mechanical and/or chemical techniques are employed to achieve this. The structure being treated is mechanically freed of scale, burrs, rust, paint, and other materials by using metal brushes (see above photo) or drill-bit or grinder-attachable brushes.

Chemical cleaning uses a variety of solvents, including white spirit and 646, as well as petroleum or coal solvents to remove oil and other grease stains.

Applying primer to metal structures with a spray gun

Various types of sprayers, such as airless and pneumatic units, high and low pressure, manual and automatic, with an upper or lower tank, are most frequently used for large volumes of painting work. The most crucial thing is to follow the instructions’ specified viscosity; hence, the nozzle diameter shouldn’t be too small in order to avoid decreasing productivity.

Because the torch sprays the material through the air, you must take extra safety precautions when using any kind of sprayer. This means that in addition to gloves, you’ll need respirator glasses.

Applying primer to metal structures with a brush

If the area to be coated is large and reasonably smooth, film coating can also be applied with a brush or paintbrush.

However, using a paint roller is much more practical for smooth surfaces; however, it needs to be made of wool or mohair because solvents and white spirit corrode foam rubber. Additionally, when the part is grounded, these coating methods are applied by dipping, jet irrigation, and spraying in an electric field.

The application process is the same as for any other traditional painting task: you must spread (roll out) the film thoroughly to prevent smudges and keep an eye on the layer’s continuity to avoid leaving bald spots. You must wait for the primer layer to completely dry before beginning to paint; the above table shows when this should happen.

Note: In certain cases, paint is replaced with a second layer of GF-021 instead of paint when painting. This is feasible in locations where painting isn’t really necessary for decoration—rather, it’s more of a technical requirement to protect the material. These are typically water supply and sewerage systems, equipment in communication wells, warehouses, and so forth.

A glyphthalic primer is a multipurpose, long-lasting base coat that improves adhesion and extends the life of paint applications. This primer is well-known for its ability to withstand moisture and chemicals, making it perfect for prolonging the life of metal, masonry, and wood surfaces. It is a popular option for both professional and do-it-yourself projects because of how simple it is to apply.

Characteristic Description
Base Glyphthalic resin
Application Used to prepare surfaces for painting
Surfaces Suitable for wood, metal, and concrete
Drying Time Typically 24 hours
Properties Provides strong adhesion and protection
Thinning Requires solvent for thinning
Color Usually white or gray
Durability Long-lasting and resistant to wear

When it comes to surface preparation for painting or other finishing tasks, glyphthalic primer is a flexible and dependable choice. It is an important tool for guaranteeing a long-lasting and robust finish because of its capacity to deeply penetrate and adhere to a variety of materials, including wood, metal, and plaster. Over time, peeling and flaking can be avoided by using this primer to create a solid bond between the surface and the topcoat.

The ability of a glyphthalic primer to withstand moisture is another benefit; this is especially useful in locations that are prone to dampness or humidity. This quality adds to the overall durability of the paint job in addition to shielding the underlying material. It offers versatility in a variety of settings, making it an excellent option for both exterior and interior applications.

For optimal results, it is imperative to adhere to the manufacturer’s instructions when applying glyphthalic primer. In order for the primer to adhere properly and fulfill its function of producing a smooth, even base, the surface must be properly prepared, which includes cleaning and sanding. All things considered, this primer is a great option for completing a variety of decorating projects with a polished and long-lasting finish.

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Veronica Gerasimova

Interior designer, author of books on the design of residential premises. I will help you make your home not only functional, but also beautiful.

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