Technical characteristics of enamel OS-51-03, rules of consumption and application

OS-51-03 is the name of the organosilicate composition. The category of organosilicates includes enamel paints with improved anti-corrosion properties. OS-51-03 is traditionally used to cover surfaces exposed to the effects of radiation or temperature. They are resistant to exposure to steam, the temperature of which exceeds +400 degrees, resistant to frost and biological influences.

Organosilicate composition OS-51-03 - technical characteristics

Organosilicate 51-03 enamel is a technical paint with special characteristics. Organosilicate composite paints and varnishes were discovered in 1960 by scientists from the Institute of Chemistry and Silicates. They were intended for dyeing in extreme conditions.

Over time, the properties of organosilicates have improved. Researchers have made it possible to create materials such as OS-51-03 that can withstand high temperatures and are resistant to radiation and high pressure.

OS-51-03 is a designation that is used officially. "OS" - means belonging to the category of organosilicates, 51-03 - the number by which the paint is registered in technical catalogs.

Composition and properties

The basis of organosilicate enamel has not changed over the years. The composition includes:

• silicones or silicone polymers;
• hydrosilicones intended to structure the material;
• oxidizing agents or oxides of transition metals, which are responsible for the consistency of the coating and its resistance to external influences.

Basic properties of OS-51-03:

• has radiation resistance with an indicator of more than 1 MGy;
• does not respond to steam with temperatures up to +400 degrees;
• chemical resistant;
• does not fade in the sun;
• shows resistance to biological influences;
• has a water-repellent property;
• does not crack under the influence of low air temperatures;
• Provides a durable, durable and flexible coating provided the surface is properly prepared and applied.

The paint is a viscous suspension without inclusions or clots. As a rule, the color pigment has a calm and even shade.

Scope

The scope of application of the organosilicate composition OS-51-03 is wide, it is used:

• for painting pipes laid outdoors, in water or in the ground;
• to create a finish on metal street structures or concrete structures embedded in buildings (for example, painting emergency stairs, building structures, bridge supports, parts of hydraulic structures, support structures of various buildings);
• for painting cars (for example, coating agricultural vehicles or trucks);
• for covering pipelines, the heating temperature of which reaches +300 degrees;
• when covering various equipment in chemical plants where the influence of acids, alkalis or salts is increased;
• used in power stations or distribution stations.

In each case, the enamel is applied in a special way. When covering large areas, only non-contact paint is used using special devices.

Advantages and disadvantages of enamel

OS-51-03 paint is used in specific situations. The best option is for use in enterprises, power plants and extensive technical facilities. When using enamel on a smaller scale, it is necessary to take into account all the characteristics of the material.

Benefits	Defaults
High coating strength	Limited color range
Work in different temperature conditions	During work, you must strictly follow the instructions
Resistant to sun, temperature, steam, chemical and biological influences	It is impossible to violate the rules of surface preparation
Creates an even, even layer	Priming required
It is possible to choose between a matt and semi-matt finish

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Work with organosilicate enamel involves the use of special tools. To apply paint by airless method, a special gun is needed, inside which a certain pressure must be created.

At what temperatures and humidity is it recommended to use

OS-51-03 is applied to surfaces after special preparation. The air temperature during work can vary from -30 to +35 degrees.It should be borne in mind that a set of optimal coating properties is achieved after 72 hours, at an air temperature of +20 degrees.

Drying time

Most often, anti-corrosion enamel is applied in 2 layers. The first coat cures over a period of 120 to 60 minutes. Enamel reaches full cure in 72-74 hours from the time of topcoat application.

The polymerization of the first layer depends on the air temperature, which is regulated during operation:

• at -20 degrees - 120 minutes:
• at 0 degrees - 90 minutes;
• at +20 degrees - 60 minutes.

Important! It is strictly forbidden to apply the second coat unless the first coat is completely cured.

Coating durability

The durability of the coating is characterized by control with the U-2 device. This is one of the characteristics determined by the strength of the blow. The impact resistance indicator remains stable for the entire service life, it is equal to 30 centimeters. The electrical resistance of the coating is characterized by 10 square feet. per mm.

Palette of shades

One of the disadvantages of the organosilicate composition is considered poor color gamut. OS-51-03 is available in several types:

• smooth and homogeneous matte;
• semi-matte;
• Green;
• light gray;
• grey;
• black;
• brown.

A semi-matte finish is usually gray and green.

Requirements for OS-51-03

Silicate composition OS-51-03 is produced in accordance with state technical standards. After testing, the paint must meet the following requirements:

• ensure a uniform and uniform coating without visible defects;
• the required viscosity index of the suspension is 20 s;
• the adhesion index cannot be less than 1 point;
• the thickness of one layer is 100 microns (the calculation is made on the basis of the dried layer);
• work at temperatures from -30 to +35 degrees;
• steam aging at temperatures up to +400 degrees;
• resistance to radiation and chemical attack.

Reference! Subject to the measures taken during the preparation and cleaning of the surface, the service life of paint materials is 10-15 years.

Material consumption calculator per square meter

Organosilicate enamel is purchased at the rate of consumption per coat:

• the total thickness of the dried finish should be 150-220 microns;
• if the dried coating is less than 150 microns, then the deterioration of the anticorrosive properties, a reduction in the service life and the appearance of surface defects are foreseeable;
• if the thickness of the dried coating is greater than 220 microns, then a decrease in physical parameters is possible, the coating cracks predictably and the resistance to a vapor environment decreases;
• The consumption of composite material per layer of standard thickness ranges from 200 to 250 grams per square meter.

In some cases, when it is necessary to apply several layers that do not exceed the declared thickness of the finishing layer, the consumption can be increased up to 350 grams per square meter.

With pneumatic spray

It should be borne in mind that the consumption of the composite material directly depends on the choice of the type of application. Pneumatic spraying is the expenditure of funds using a special device called a spray gun. When working with a sprayer, the following recommendations should be observed:

• the distance between the spray nozzle and the surface should not exceed 200-400 millimeters;
• the air pressure inside the atomizer is between 1.5 and 2.5 grams per square centimeter.

Reference! Special skills are required to operate a pneumatic spray gun.

Airless spray

For airless spraying, special devices are used, inside which the working pressure of the material is created. During the work, the following recommendations are observed:

• the distance between the nozzle of the device and the surface to be painted should not be less than 300 millimeters;
• inside the nozzle, an operating pressure of 80 to 150 bar is created;
• the diameter of the nozzle of an airless spray is measured in millimeters, it should not exceed values ​​​​from 0.33 to 0.017;
• when painting, it is necessary to select the optimal spray angle (20, 30 or 40 degrees).

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Most often, this method is used for painting large areas.

Manual application

For manual application, use brushes or rollers. Paint consumption increases during operation.

Rollers are selected based on the configuration of the surface, the presence of protrusions or additional parts. Rolls are purchased without plush, velor or other smooth fabric. It is better to choose brushes made of natural fibers. In order to create a layer of suitable thickness, for manual application it is necessary to paint the surface 2-3 times.

Stripe Dye

Stripe coating is a type of coating useful for creating a solid layer on weld beads, end cap edges, and other hard-to-reach places. The strip coating method is combined with airless application and pneumatic spraying.

Application technology

One of the rules when working with an organosilicate composition is the correct and high-quality surface preparation. If mistakes are made during stripping, this will affect the physical characteristics of the coating created.

Coaching

The surface is prepared for painting in accordance with the standards (according to GOST 9-402.80). First, traces of dust, dirt, remnants of the old coating are removed from the surface one by one. If metal structures are processed, then they work separately with traces of rust. To remove stains of corrosive properties, special converters are used. These are the substances with which the entire surface is treated.

The transducers are applied in a thin layer and left for 30 minutes. After that, the white foam formed as a result of the reaction is cleaned with a rag or special brushes.

The next stage of preparation is dusting. This is to clean the surface of deposited dust; the procedure is carried out using industrial vacuum cleaners.

Primer

For OS-51-03 enamel, a primer coat is not required. It is applied in exceptional cases where the surface is a complex coating with unusual physical characteristics.

Painting concrete and metal surfaces

Concrete and metal surfaces are painted using special tools. Most often it is an industrial application, which involves the work of technical specialists. When staining, the basic recommendations are followed:

• when spraying, the spray gun is kept at a distance of 200 to 400 millimeters from the surface;
• during operation, the angle of inclination of the sprayer is observed, otherwise the layer will turn out to be uneven, uneven spots may appear;
• metal structures are painted in three layers, but provided that the thickness of the coating does not exceed 200 microns;
• concrete structures are painted in two layers without taking into account the primer layer;
• an important condition of the work is compliance with the drying time intervals of each subsequent layer;
• in this case, it is necessary to observe the requirements for polymerization of the coating, which depend on the air temperature in the room where the painting takes place.

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Do not forget about the preparation of the working solution. This is an important condition that includes mixing, thinning and finishing to the desired consistency.

The paint is stirred after opening the lid, the sediment is completely removed and insisted until the air bubbles disappear from the surface.

OS-51-03 is used for cold and hot curing. When using the cold hardening method, a hardener is mixed into the paint. Then the composition, if necessary, is diluted with toluene. The viscosity of the composition should be at least 22 s.

Xylene is used as a diluent for the hot polymerization process; it is applicable at temperatures from +10 to +35 degrees.

Final coverage

A special varnish is used as a top coat for OS-51-03. The composition of the material ensures its physical characteristics. Varnish, when applied to organosilicate enamel, increases anti-corrosion properties, contributes to the creation of a resistant coating with anti-radiation properties.

Varnish is a colorless liquid of medium viscosity. For applying varnish, brushes and rollers are traditionally used, as well as spray guns. The varnish gives a semi-gloss finish, is applied in one coat. The thickness of such a layer does not exceed 30-50 microns.The film can only be applied at an air temperature of +5 to +30 degrees, while the air humidity should remain within 80 percent.

Reference! The final polymerization time of the varnish is 5 days.

Advice from the masters

Working with organosilicate compositions requires certain skills and abilities. In addition, you must follow the security measures:

• hands and clothing are protected with gloves and a special fabric coverall;
• eyes are protected with goggles of glass construction;
• the respiratory organs are closed to the ingress of volatile components with the help of respirators.

Recommendations from specialists:

• When painting concrete structures, special attention is paid to cleaning. Small nicks that remain on the rough concrete surface can interfere with the curing process. They are sealed with mastic, if necessary, covered with a layer of a special primer mixture.
• Concrete structures that have been recently produced should not be painted for 30 days from the date of installation. This rule is due to the fact that the industrial moisture accumulation effect persists for some time inside the concrete.
• When degreasing metal structures, it is unacceptable to use white spirit or gasoline. Better to use technical degreasers.
• During the work, it is imperative to observe the time intervals provided for the drying of each subsequent layer.
• If there is a masonry element in the structure to be painted, you must wait 10 to 12 months before the building materials shrink naturally.
• The enamel can be kept for 12 months from the date of issue. Do not defrost or freeze paint containers, this technique will predictably affect the technical characteristics of paint materials.
• Do not keep an open can of paint for more than a week. At the same time, the container is not placed near heating devices, is not exposed to the sun and is not frozen outside at subzero temperatures.

If you follow the rules when working with OS-51-03, the service life will be 10-15 years. In case of violation of the points relating to the preparation and cleaning of the surface, as well as the storage of the composition, the period of operation without loss of qualities is reduced by one third.