A method of obtaining a flame-retardant coating

 

(57) Abstract:

Usage: fire-resistant coatings on various surfaces. The essence of: coating the surface of the insulating layer of the composition containing siloxane rubber 30 60; glass microspheres 40 70; and then flame-retardant layer of the composition containing siloxane rubber 20,0 79,5; glass microspheres 20,0 60,0; boron nitride 0,5 20,0; the drying of each layer is carried out at 20 to 80°C, and final heat treatment of the coating at 80 to 150°C, and the total thickness of the fire-resistant layer does not exceed 3 mm, the Speed of coating failure at 1000°C 0,15 0,55 mm/s, the deformation 8 12% 2 table.

The invention relates to methods of producing fire-resistant coatings on various surfaces various products.

A method of obtaining fire-resistant coating, comprising applying to the surface a composition comprising liquid glass, hollow phosphate microspheres, nepheline flame retardant and asbestos [1]

The disadvantage is the resulting low strength characteristics, poor thermal insulation properties and, as a consequence, the limited application used in its composition.

These drawbacks are explained by krupkee closest to the technical nature of the present invention is a method of obtaining a flame-retardant coating, comprising coating the surface of the suspension containing titanium dioxide, ammonium acetate and water, in the form of several layers with intermediate drying of each layer and the final heat treatment of the coating oxidative annealing at a temperature of more than 500about[2]

The disadvantages of this method include low insulating properties of the resulting coating and its low impact strength.

The aim of the invention is to obtain coatings with high resistance and high thermal insulation and strength.

This task is solved in that in a method of producing fire-resistant coating, comprising applying to the surface several layers of a composition containing a binder and a filler with intermediate drying of each layer and the final heat treatment of the coating, first on the surface cause the insulating layers of a composition containing, by weight.

Siloxane rubber 30-60

The glass microspheres 40-70, and then fire-resistant layers of a composition containing, by weight.

Siloxane rubber 20,0-79,5

The glass microspheres of 20.0-60.0 sec

The boron nitride of 0.5 to 20.0.

As siloxane rubber is used polyorganosiloxane glass microspheres microspheres with a diameter of 100-400 μm.

The number of insulating layers is 2 to 30, and fire 2 7.

P R I m e R s 1-2. Coverage examples are given as described above. The compositions of the layers, their thickness, quantity and conditions of application are given in table.1, the properties of the coatings in table.2.

The METHOD of OBTAINING FIRE-resistant COATING, comprising applying to the surface several layers of a composition containing a binder and a filler, with intermediate drying of each layer and the final heat treatment of the coating, wherein the first surface is applied insulating layers of a composition containing, by weight.

Siloxane rubber 30 60

The glass microspheres 40 70

and then layers of fire-resistant composition containing, by weight.

Siloxane rubber 20,0 79,5

The glass microspheres 20,0 60,0

The boron nitride 0,5 20,0

the drying of each intermediate layer is carried out at 20 80oWith a final heat treatment of the coating at 80 150oS, and the total thickness of fire-resistant layer does not exceed 3 mm

 

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SUBSTANCE: coating for application to worn surfaces comprising composition including at least one curable polyurethane and at least one chlorinated polyolefine which provides improved adhesion to a worn surface as compared to adhesion of a coating composition including the same at least one curable polyurethane but not including at least one chlorinated polyolefine. The method of refinishing a worn surface comprises application of a curable polyurethane top finishing coating that includes at least one chlorinated polyolefine to the worn surface, and curing the curable polyurethane top finishing coating, wherein, before application of the curable polyurethane top finishing coating, the worn surface is treated with a solvent without any mechanical scraping.

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