VARNISH BT-577 AND PAINT BT-177

TECHNICAL CONDITIONS

GOST 5631-79

STATE COMMITTEE OF THE USSR
ON PRODUCT QUALITY MANAGEMENT AND STANDARDS
Moscow

STATE STANDARD OF THE USSR UNION

Validity from 01.01.80
until 01/01/95

This standard applies to BT-577 varnish and BT-177 paint.

Varnish BT-577 is a solution of bitumen in organic solvents with the introduction of synthetic modifying additives and drier. Varnish is intended to protect surfaces metal structures and products during short-term storage and transportation (six months in a temperate climate according to GOST 6992-68 for a single-layer coating), as well as for the manufacture of aluminum paint.

BT-177 paint is a suspension of aluminum powder PAP-2 according to GOST 5494-71 in varnish BT-577 and is prepared immediately before application by mixing 80 - 85% varnish BT-577 and 15 - 20% aluminum powder. BT-177 paint is intended for painting structures and products operated in atmospheric conditions.

Coating with BT-177 paint (in two layers over the primed surface) should preserve protective properties in a temperate climate for at least two and a half years.

BT-577 varnish is applied to the surface with a spray gun, brush, pouring or dipping, and BT-177 paint is applied with a spray gun or brush.

1. TECHNICAL REQUIREMENTS

1.1. Varnish BT-577 must be manufactured in accordance with the requirements of this standard for the recipe and technological regulations, approved in in the prescribed manner.

When marking transport containers, a danger sign must be applied according to GOST 19433-88 (class 3, classification code 3313).

Sec. . (Changed edition, Amendment No. 2).

6. MANUFACTURER WARRANTY

6.1. The manufacturer guarantees that the varnish meets all the requirements of this standard, subject to storage and transportation conditions.

6.2. Guarantee period varnish storage - six months from the date of manufacture.

6.1, 6.2. (Changed edition, Amendment No. 1).

INFORMATION DATA

1. DEVELOPED AND INTRODUCED by the USSR Ministry of Chemical Industry

DEVELOPERS

V. B. Manerov, V. M. Makarova(topic leader), A. A. Kaverinskaya, E, D. Kazantseva

2. APPROVED AND ENTERED INTO EFFECT by Resolution State Committee USSR according to standards dated March 13, 1979 No. 895

3. Inspection frequency - 5 years

4. INSTEAD GOST 5631-70

5. REFERENCE REGULATIVE AND TECHNICAL DOCUMENTS

Send a request

Paint BT-177 is a suspension of aluminum powder (powder) in bitumen varnish BT-577. It is popularly known as “silver”, which is determined by the appearance of the paint and varnish material. Bituminous paint BT-177 is widely used for painting the surfaces of various metals in order to give them decorative properties and resistance to, in particular, atmospheric (on outdoors), as well as resistance to static impact weak solutions salts and water. Silver can also be applied to wood, concrete and some other types of surfaces.

You can buy BT-177 (silver) paint at a wholesale price in original packaging, capacity - 25 kg. Price for BT-177 golden – check.

The composition of silver paint BT-177 includes aluminum powder of the PAP-1 or PAP-2 brand. The difference between these brands of aluminum powder is only in the size of the aluminum particles - PAP-2 is more finely dispersed. The mass fraction of non-volatile components is about 40%. Viscosity may vary depending on the amount of solvent used, but the optimal values ​​are around 18-35 s according to VZ-4.

Often the paint is prepared immediately before it is used. To do this, 15-20% aluminum powder is mixed in 80-85% semi-finished bitumen varnish BT-577. On sale there is already a mixed composition, which you just need to shake, or varnish and powder separately. They must be mixed very well before use. In order for the paint layer long time remained intact and did not peel off from the base metal, it is necessary to carry out quality training surfaces before application protective coating. To do this, it must be cleaned of various types of contaminants (dirt, rust residues, dust, oil stains, etc.), degreased, and only then begin painting with silver. Bituminous paint BT-177 can be applied to the protected surface using several methods: airless or pneumatic spraying, roller, brush, dipping, and in some cases, pouring. It is advisable to paint a surface previously treated with a primer, but this is not necessary. Apply this paint and varnish material in one or two layers at relative humidity air no more than 80% and temperature from +5 to +35°C. In the case of two-layer application, bitumen paint BT-177 (silver) effectively protects the surface from atmospheric corrosion in moderate conditions. climatic conditions at least 2.5 years.

If necessary, silver paint is diluted to the desired consistency using solvent, turpentine, white spirit or a mixture of these solvents in a 1:1 ratio. The consumption of BT-177 paint per layer largely depends on the skill of the painter, the method of applying paintwork materials, and surface preparation, but on average it is about 80-130 g/m2 with a layer thickness of 20-25 microns.

The paint and varnish material has good adhesion to metal surfaces.

Both hot and cold drying are used to harden the paint layer. Under natural conditions (i.e. at a temperature of 20°C), BT-177 paint dries to degree 3 within 16 hours. When hot drying (100-110°C and above, up to 200°C), the drying time is reduced to half an hour.

Appearance of the finished protective coating: uniform semi-gloss film of silver color, without craters, sagging, bubbles, wrinkles and other defects. The bending of the coating is no more than 1 mm. The hiding power of BT-177 paint is no more than 30 g/m2.

The appearance, namely, the color of the finished coating, greatly depends on the quality of the aluminum powder used and its floatability. There are powders that do not float to the surface of the film, but form a sediment. In this case paintwork will have a brownish tint (light to dark). A similar effect is observed when too large quantities bitumen varnish, then you just need to dilute the paint. During long-term storage of diluted silver powder, aluminum powder settles to the bottom of the container over time and is then quite difficult to stir. To prevent such situations, it is advisable to dilute the BT-177 paint immediately before use.

The guaranteed shelf life of bitumen varnish BT-577 is 0.5 years, and that of aluminum powder is 12 months. The shelf life of BT-177 paint is 0.5 years.

Serebryanka is manufactured according to GOST 5631-79.

STATE STANDARD OF THE USSR UNION

VARNISH BT-577 AND PAINT BT-177

TECHNICAL CONDITIONS

GOST 5631-79

STATE COMMITTEE OF THE USSR
ON PRODUCT QUALITY MANAGEMENT AND STANDARDS
Moscow

STATE STANDARD OF THE USSR UNION

Validity from 01.01.80
until 01/01/95

This standard applies to BT-577 varnish and BT-177 paint. Varnish BT-577 is a solution of bitumen in organic solvents with the introduction of synthetic modifying additives and drier. The varnish is intended to protect the surfaces of metal structures and products during short-term storage and transportation (six months in a temperate climate according to GOST 6992-68 for a single-layer coating), as well as for the production of aluminum paint. BT-177 paint is a suspension of aluminum powder PAP-2 according to GOST 5494-71 in varnish BT-577 and is prepared immediately before application by mixing 80 - 85% varnish BT-577 and 15 - 20% aluminum powder. BT-177 paint is intended for painting structures and products operated in atmospheric conditions. Coating with BT-177 paint (in two layers over a primed surface) should retain protective properties in a temperate climate for at least two and a half years. BT-577 varnish is applied to the surface with a spray gun, brush, pouring or dipping, and BT-177 paint is applied with a spray gun or brush. (Changed edition, Amendment No. 2).

1. TECHNICAL REQUIREMENTS

Table 1

table 2

2. SAFETY REQUIREMENTS

Table 3

3. ACCEPTANCE RULES

4. TEST METHODS

5. PACKAGING, LABELING, TRANSPORTATION AND STORAGE

6. MANUFACTURER WARRANTY

INFORMATION DATA

1. DEVELOPED AND INTRODUCED by the Ministry of Chemical Industry of the USSR DEVELOPERS V. B. Manerov, V. M. Makarova (topic leader), A. A. Kaverinskaya, E., D. Kazantseva 2. APPROVED AND ENTERED INTO EFFECT by Resolution of the USSR State Committee for Standards dated 03/13/79 No. 895 3. Inspection frequency - 5 years 4. INSTEAD GOST 5631-70 5. REFERENCE REGULATIVE AND TECHNICAL DOCUMENTS

BT-177 (GOST 5631-79) is used for painting structures and products used outside in atmospheric conditions.

Purpose of the material

BT 177 (silver) paint is intended for the protection and decoration of metal, wood, concrete structure and products that are used in an open atmosphere.

Advantages

BT 177 is a paint with next row advantages:

It is capable of giving the surface decorative look;
- provide surface protection from negative atmospheric influences;
- has an anti-corrosion effect;
- drying is fast enough;
- the coating can serve for 2.5 years if properly painted.

Main characteristics and properties of the material

BT 177 - which consists of two main components: varnish BT-577 and they are mixed before use. This paint is a material that is quite resistant to atmospheric influences. It can be applied to a primed or unprimed surface. pre-treatment. The paint has excellent adhesion to metal, when dried it is possible to obtain a shiny, mirror-like, elastic, temperature-resistant coating that can withstand temperatures of 200 C, among other things, it provides excellent protection against rust, high humidity air and the action of solutions complex substances contained in water onto the painted surface. BT 177 is a paint that is applied with a brush, roller or sprayed onto the product. Drying of paint occurs both under natural conditions and through the use of hot drying.

Appearance of coatings

After the paint has dried, the surface acquires a smooth structure without any wrinkles or pockmarks.

Solvent

Data paints and varnishes if necessary, dilute with white spirit, solvent, turpentine, or a mixture of them in the required ratio (1:1).

Applying paint to the product

The product should be prepared before applying paint. If it has been previously painted, it should be cleaned and dried. Only after completing these steps can you paint the surface using a roller, brush or spray method. These paints and varnishes are applied in one or two layers; the air temperature during paint application can vary from +5 to +35C and humidity is a maximum of 80%. When using paint at low temperatures, it should be noted that the temperature of the material must be at least +15C.

How much paint does it take to make one layer?

For a surface to be painted measuring 1 sq. m. you will need from 110 to 130 grams. The actual consumption, as a rule, depends on how well the surface to be painted is prepared, what painting method is used and what is the professionalism of the personnel.

One layer of paint is 20-25 microns thick and depends on the painting method and the qualifications of the personnel.

How to dry a painted product?

The drying time of the paint at an air temperature of 20-22C is 15-16 hours; at a temperature of 100-110 C, the paint is dried for 30 minutes, the coating should first be kept for 30 minutes at After hot drying, before use, the painted coating should be kept for at least 3 hours in air, the temperature of which is 18-22 ° C.

Coating service life

If all requirements for surface preparation, paint application (primer layer and 2 layers of paint), as well as drying of the painted product are met, the coating can be used for up to 2.5 years in a temperate climate.

Main technical characteristics

BT 177 paint has the following characteristics:

• Drying at a temperature of 20-22°C to the third degree takes no more than 16 hours.
• At air temperatures from 100 to 110°C - no more than 30 minutes.
• The elasticity of the film when bending is no more than 1 mm.
• Undried film has a covering power of no more than 30 g/m2.

Metal products are painted with BT 177 paint, the characteristics of which are indicated above, as follows:

• 1 layer - primer (eg GF) on a rusty Unicor surface, or using one layer of a corrosion converter;
• Layer 2 - one (or two) layer of this type of paint.

With absence ground cover you can simply apply two coats of paint.

How should it be stored correctly?

The paint components (varnish and duralumin powder) will be stored in a hermetically sealed container, protected from moisture, exposure to temperature influences (direct rays of the sun and heat) at air temperatures from minus 40C to plus 40C.

In what container is it produced?

The varnish that makes up the paint is sold in tin cans or industrial containers; aluminum powder - in drums. Packages can be large, holding 15, 25, 57 kg, or small, weighing from 0.8 to 2.8 kg.

manufacturer installed

The guaranteed shelf life of varnish from the date of manufacture is six months, and aluminum powder is stored for one year from the date of manufacture.

GOST 3134-78

GOST 5233-89

GOST 5494-95

Introductory part, 4.2

GOST 6613-86

GOST 6806-73

GOST 6992-68

Introductory part

GOST 8420-74

GOST 8784-75

GOST 8832-76

GOST 9980.1-86

GOST 9980.2-86

GOST 9980.3-86

GOST 9980.4-2002

GOST 9980.5-86

GOST 10214-78

GOST 16523-97

GOST 17537-72

GOST 19007-73

GOST 19433-88

TU 21-0284461-058-90

5. The validity period was lifted according to Protocol No. 4-93 of the Interstate Council for Standardization, Metrology and Certification (IUS 4-94)

6. EDITION (September 2003) with Amendments No. 1, 2, approved in June 1984, March 1989 (IUS 10-84, 6-89), Amendment (IUS 5-2002)


This standard applies to BT-577 varnish and BT-177 paint.

Varnish BT-577 is a solution of bitumen in organic solvents with the introduction of synthetic modifying additives and drier. The varnish is intended to protect the surfaces of metal structures and products during short-term storage and transportation (six months in a temperate climate according to GOST 6992 for a single-layer coating), as well as for the production of aluminum paint.

BT-177 paint is a suspension of PAP-2 aluminum powder according to GOST 5494 in BT-577 varnish and is prepared immediately before application by mixing 80-85% BT-577 varnish and 15-20% aluminum powder. BT-177 paint is intended for painting structures and products operated in atmospheric conditions.

Coating with BT-177 paint (in two layers over a primed surface) should retain protective properties in a temperate climate for at least two and a half years.

BT-577 varnish is applied to the surface with a spray gun, brush, pouring or dipping, and BT-177 paint is applied with a spray gun or brush.

1. TECHNICAL REQUIREMENTS

1. TECHNICAL REQUIREMENTS

1.1. Varnish BT-577 must be manufactured in accordance with the requirements of this standard according to the recipe and technological regulations approved in the prescribed manner.

1.2a. (Deleted, Amendment No. 2).

1.2. Before use, the varnish is diluted to working viscosity with white spirit (nefras-S4-155/200) in accordance with GOST 3134, solvent in accordance with GOST 1928 or in accordance with GOST 10214, turpentine in accordance with GOST 1571 or a mixture of these solvents.

1.3. Varnish BT-577 (OKP code 23 1113 0600 09) must comply with the requirements and standards specified in Table 1.

Table 1

1.2-1.4. (Changed edition, Amendment No. 2).

2. SAFETY REQUIREMENTS

2.1. Varnish is flammable and toxic. Solvent vapors included in the varnish, when concentrated in the air of the working area, have an irritating effect on the mucous membrane of the eyes and respiratory organs. Prolonged work with varnish leads to irritation of the skin of the hands.

(Changed edition, Amendment No. 2).

2.2. The main properties of solvents are given in Table 3.

Table 3

2.3. Methods for determining solvent vapors in the air of the working area of ​​premises must be specified in the regulatory and technical documentation for painting products.

2.4. During the production, testing and use of varnish, fire safety and industrial sanitation requirements in accordance with GOST 12.3.005 must be observed.

2.5. All work related to the production and use of varnish must be carried out in workshops equipped with local and general ventilation. All persons must be provided with special clothing and personal protective equipment in accordance with GOST 12.4.011.

2.6. Fire extinguishing agents: sand, felt, carbon dioxide, water in a fine spray, chemical or air-mechanical foam from stationary installations or fire extinguishers.

2.7. Control over the content of maximum permissible emissions (MPE) into the atmosphere - in accordance with GOST 17.2.3.02.

(Introduced additionally, Amendment No. 2).

3. ACCEPTANCE RULES

3.1. Rules for acceptance of varnish - according to GOST 9980.1.

4. TEST METHODS

4.1. Sampling - according to GOST 9980.2.

4.2. Preparing for the test

Before testing, the varnish is kept at (20±2) °C for at least 2 hours, mixed and filtered through a sieve with mesh 02 according to GOST 6613.

The viscosity of the varnish and the mass fraction of non-volatile substances are determined without diluting the varnish.

To determine other indicators, the varnish is diluted with white spirit (nefras-S4-155/200) at 20 °C to a viscosity of 18-23 s using a VZ-246 (or VZ-4) viscometer and applied with a paint sprayer to the prepared plates in one layer.

To test the varnish and its mixture with aluminum powder, the plates are prepared in accordance with GOST 8832, section 3.

The hardness of the varnish film and the hiding power of the paint are determined on glass for photographic plates measuring 9x12-1.2 according to TU 21-0284461-058*.
________________
* Specifications are the author's development. Behind additional information refer to the link

The elasticity of the film during bending is determined on plates made of black hot-rolled sheet with a size of 20x150 mm and a thickness of 0.25-0.32 mm.

The remaining indicators are determined on plates measuring 70x150 mm from black hot-rolled sheet metal with a thickness of 0.25-0.28 mm or from steel grades 08 kp and 08 ps with a thickness of 0.5-1.0 mm according to GOST 16523.

To test varnish mixed with aluminum powder, take a sample of varnish prepared according to clause 4.2, with a viscosity of 18-23 s using a viscometer type VZ-246 (or VZ-4) at 20 ° C, mixed with aluminum powder in accordance with GOST 5494, grade PAP-2 in the ratio indicated below.

Varnish BT-577 - 80-85%.

Aluminum powder - 15-20%.

The resulting paint is filtered through a sieve with mesh 056 according to GOST 6613.

The paint is applied with a spray gun in one layer.

The plates with applied varnish and paint are kept in air at (20±2) °C for 30 minutes, then placed in a thermostat and the varnish film is dried at 100-110 °C for 20 minutes, the paint film is dried for 30 minutes.

After drying in a thermostat, the samples are kept in air at (20±2) °C for 3 hours.

The thickness of the varnish and paint film after drying should be 20-25 microns.

To determine the resistance of the film to the static effects of water and a 3% solution, varnish is applied to the plate on both sides.

(Changed edition, Amendment No. 1, 2).

4.3. The appearance of the varnish and paint film is determined visually in natural diffused light.

4.3a. The conditional viscosity of the varnish is determined using a viscometer type VZ-246 (or VZ-4) with a nozzle diameter of 4 mm at a temperature of (20.0±0.5) °C.

(Changed edition, Amendment No. 2).

4.3b. The mass fraction of non-volatile substances is determined according to GOST 17537. To do this, a sample of the tested varnish weighing 1.5-2 g is placed in a drying oven and kept at a temperature of (140±2) °C. The first weighing is carried out after 1.5 hours of exposure in the cabinet, subsequent weighings are carried out every 30 minutes until constant weight.

4.3a, 4.3b. (Introduced additionally, Amendment No. 1).

4.4. The resistance of the varnish film to the static effects of water and a 3% solution is determined according to GOST 9.403, with painted and dried samples placed in the test solution at 2/3 of the height and after exposure in water or solution for the time specified in subparagraphs 7 and 8 Table 1, the samples are kept in air at (20±2) °C for 2 hours and the appearance of the film is examined. The film must be unchanged, slight matting is allowed.

5.3. Transportation and storage - according to GOST 9980.5 *.
________________
* In the territory Russian Federation the document is not valid. GOST 9980.5-2009 is in force. - Database manufacturer's note.

Section 5. (Changed edition, Amendment No. 2).

6. MANUFACTURER WARRANTY

6.1. The manufacturer guarantees that the varnish meets all the requirements of this standard, subject to storage and transportation conditions.

6.2. The guaranteed shelf life of the varnish is six months from the date of manufacture.

6.1, 6.2. (Changed edition, Amendment No. 1, Amendment).



Electronic document text
prepared by Kodeks JSC and verified against:
official publication
M.: IPK Standards Publishing House, 2003