SU1270138A1 - Composition for coating building structures - Google Patents

Abstract

KSPOSITION TO COATING CONSTRUCTION STRUCTURES, including an epoxide resin, a resin, a solvent, and a salt of phosphoric acid, which, in order to improve the flame retardant and strength properties, it contains polyammonium phosphate and polymetafate, as well as polyphosphate, and strength, as the salts of phosphoric acid, and polymethaphosphate, and contains polyammonium phosphate and polymetaphosphate, as well as salts of phosphoric acid, polyammonium phosphate, and polymetafate, which contains phosphate acid and polymethaphosphate. in the following ratio of components, May.%: Epoxy diano36 45 va resin Polyethylene4, 0 3.0 18 polyamine Polyammonium 20 phosphate i Polymetaphos (L 20 10 10 18 8 8 sodium fata Ammonium chloride Clay

Description

1 | invention relates to the compositions of protective coatings that increase the fire resistance of building structures. .

 The aim of the invented € 1 is to increase the flame retardant and strength properties.

An introduction to the proposed refractory coating of additives — ammonium chloride and clay — decomposing at different temperature intervals (300–1200 ° C) with gas removal corresponds to the formation of a heat insulating screen with low thermal conductivity values — due to an increase of 10–12 times the thickness of the proposed fire retardant layer composition.

The release of water vapor reduces smoke generation due to a decrease in the oxygen concentration in the combustion zone.

The presence in the composition of the proposed composition for coating clay building structures has a plasticizing effect.

A decrease in ammonium chloride, polyammonium phosphate and polymetafossbate below the proposed content leads to a decrease in the flame retardant effect. A decrease in the clay content leads to an increase in the content of epoxy resin and a decrease in flame retardant properties.

The composition is prepared as follows.

The mixture consisting of metered amounts of clay, ammonium chloride, sodium polymetaphosphate, and polyammonium phosphate is thoroughly mixed and the required amount of epoxy resin cured with a calculated amount of polyethylene polyamine is added. The prepared composition is applied with a spatula to a protected surface and dried under natural conditions.

The compositions of the proposed compositions are given in table. one.

The properties of the compositions are given in table; 2

Table 1

Epoxy resin Dianova SmO Polyethylenepolyamine Polyammonium phosphate Sodium polymetaphosphate Ammonium chloride Clay

Disubstituted ammonium phosphate

Oxalic acid

Urea formaldehyde resin

50.0 5.0

11.0 9.25

24.75

Flammability group of wood structures protected by composition

Fire resistance for coated metal structures protected by the composition, h

The temperature of the end of the pulling process, resulting in the formation of heat C of the insulating screen.

Ratio of the moment of destruction of the protective layer to the moment of the destruction of the substrate by tensile strength,%

difficult to burn

0.85

0.50

0.75

0.70

1200

1200

300

1200

Claims (1)

COMPOSITION FOR COATING CONSTRUCTION STRUCTURES, including epoxy diane resin, polyethylene polyamine and salts of phosphoric acid, characterized in that, in order to increase flame retardant and strength properties, it contains polyammonium phosphate and sodium polymethophosphate and, in addition, ammonium chloride as salts of phosphoric acid in the following ratio of components, wt.%: Epoxy Diano resin 36 - 45 Polyethylene- polyamine 3.0 - 4.0 Polyammonium phosphate 18 - 20 Polymetaphos fat sodium 18 - 20 Ammonium chloride 8-10 Clay 8-10 4HWT‘Tis 1270138 ²