Enamel HS-759
October 13, 2018
vVrnish XC-724
October 13, 2018
Enamel HV-785
Type: Enamels HV-785 of various colors are a suspension of pigments in a solution of chlorinated polyvinyl chloride and alkyd resins in a mixture of volatile organic solvents with the addition of a plasticizer.
XB-784 lacquer is a solution of chlorinated polyvinyl chloride resin in a mixture of volatile organic solvents with the addition of a plasticizer.
Scope : Enamels and varnishes are intended for protection in complex multi-layer coating of pre-primed surfaces of equipment, metal structures, as well as concrete and reinforced concrete building structures operated indoors, against the effects of aggressive gases (SO2, CO2, Cl2), acids (sulfuric, phosphoric , salt) and solutions of salts and alkalis at a temperature not higher than + 60 ° C. Enamels are black and red-brown are also intended to protect in a multilayer coating previously primed by erhnostey metal structures operating in atmospheric conditions from corrosive gases and other chemical industries at temperatures above + 60 ° C and the lacquer – a primer for concrete constructions.
The complex coating is chosen separately for each type of aggressive environment in accordance with the regulatory and technical documentation for painting certain types of equipment and structures.
Specifications :
| No | Name of the indicator | Requirements TNPA |
| EnamelHB-785 | ||
| one | Enamel film color:
|
Must be within the limits of permissible deviations established by the samples (standards) of the “Card index” color or by the control samples of the color |
| – yellow | 210, 294 | |
| – Ivory | 214, 265 | |
| – Gray | 590, counter arr. | |
| – red-brown | counter. arr. | |
| – white | also | |
| – the black | not standardized | |
| 2 | Color varnish on iodometric scale,
mg J 2 /100 cm 3 , not more than |
– |
| 3 | The appearance of the film | After drying, the enamel film should be uniform, without wrinkles, pock marks, smudges and foreign inclusions |
| four | Relative viscosity according to the viscometer of the type VZ – 246 (or VZ – 4) with a nozzle diameter of 4 mm at a temperature of (20.0 ± 0.5) ° C, s, for enamel: blackother colors |
40 – 100 30 – 60 |
| five | Mass fraction of nonvolatile substances,%, for enamel: red-brownblack other colors |
26 – 3023 – 29
28 – 36 |
| 6 | Milling degree, µm, not more, for enamel: gray whiteblack red-brown other colors |
35 30Not standardized 50 40 |
| 7 | Hookiness of the dried film, g / m 2 , not more than, for enamel: ivory yellowgray red-brown white black |
80150
70 65 90 60 |
| eight | Drying time at a temperature of (20 ± 2) ° С, h, not more than degree 3 to degree 4to degree 5 |
one–
24 |
| 9 | Flexural elasticity of the film, mm, not more | one |
| ten | Adhesion of film, points, not more | 2 |
| eleven | Film hardness by pendulum device type TML (pendulum A), relative units, not less, for enamel: red-brown, black, other colors |
0.2
0.15 |
| 12 | The resistance of the coating to the static effects of acid and alkali | After the test, the coating should be unchanged, and the metal under it should be free of corrosion. Allowed to change the color of the film |
Advantages: Enamel is used to obtain a chemically resistant paint coating to protect the surface from the effects of aggressive media of alkaline and acidic nature. The coating has high decorative and protective properties .
Surface preparation: Enamels are applied to the primed surface. Under the enamel XB-785, it is allowed to use primers according to GOST 9.401. Surface preparation before applying primers is carried out in accordance with the requirements of the TNP on the product, GOST 9.402 or STB ISO 12944-4. To avoid moisture condensation, the temperature of the surface to be painted must be at least 3 ° С higher than the dew point temperature.
Application: Before applying, the enamel is mixed, diluted to a working viscosity of 16 – 22 s using an OT viscometer – 246 (or
OT – 4) solvent R-4 or R-4A (GOST 7827) and filtered. Enamels are applied to the surface by spraying.
The consumer independently selects the working viscosity depending on the working conditions (ambient temperature in the room, the diameter of the spray nozzle, the working pressure of compressed air, etc.).
In case of storage at low temperatures, the enamel is kept in a warm room before application (to avoid moisture condensation on the painted surface during painting).
Enamel cause at least two layers. Interlayer drying is not less than 1 hour at a temperature of (20 ± 2) ° C, the last layer – 24 hours at a temperature of (20 ± 2) ° C or 2 hours at a temperature of (60 – 65) ° C.
The thickness of the dried single-layer coating should be 18 – 23 microns.
The consumption of enamels for a single-layer coating is 160 – 200 g / m², without taking into account the complexity of the surface to be painted, its preparation, application method, enamel color, coating thickness, personnel qualifications and other factors.
Storage: Enamels should be stored in tightly closed containers, protected from moisture and direct sunlight. Keep away from fire.
Precautionary measures: Persons associated with paint work must be provided with personal protective equipment (workwear, goggles, rubber gloves). When carrying out painting works and after they finish, ventilate the room.
The dried coating does not have a toxic effect on the environment and the human body.
