COMPOSITION FOR PRODUCING HEAT PROTECTIVE COATING Russian patent published in 2019 - IPC C09D5/00 C09D183/04 

FIELD: aircraft engineering; rocket technology.

SUBSTANCE: invention relates to compositions for obtaining a heat-shielding coating that can be used in the field of aviation, rocket production for thermal protection of exterior metal and non-metallic surfaces of various designs, including large-sized structures in the form of shells with a surface of variable curvature, under the conditions of high-temperature aerodynamic heating. Composition to obtain a heat-resistant coating includes, by weight h.: Styrosil polymer of A brand 62.5÷63.5; glass microspheres MS-V grades of group 2L or MS-VP-A9 of groups 2L 23.5÷25.5; ground mica SMF-125 2.5÷4.0; sublayer P-11 9.0÷10.0; aerosil A-300 0.3÷0.5; product 119-54 3.0; gasoline solvent 40÷50. Composition uses microspheres of glass hollow sodium borosilicate composition with a density of 0.21–0.25 g/cm³ and mica milled phlogopite with a particle size of 125 microns. Technical result is the improvement of the energy-mass characteristics of the products, the expansion of the temperature conditions of their operation at a temperature not lower than 800÷900 °C, providing the possibility of coating the surfaces with vertical, horizontal, having a radius of curvature, including large-sized structures in the form of shells with a surface of variable curvature, which allows to reduce the duration of the technological cycle of coating.

EFFECT: technical result is the improvement of the energy-mass characteristics of products, the expansion of the temperature conditions of their operation.

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