High efficiency heat prevention and heat insulation coating material and making method thereof

Abstract

The invention provides a high efficiency heat prevention and heat insulation coating material and a making method thereof. The method includes: weighing and mixing 650 low molecular polyamide, 651 lowmolecular polyamide, 2-ethyl-4-methylimidazole evenly; adding a diluent composed of an X-12 solvent, ethyl acetate and anhydrous ethanol, fully mixing the substances to prepare a 50% low molecular polyamide composite curing agent system so as to form a component B; drying glass beads, iron oxide, mica powder, amine polyphosphate, aluminum hydroxide, silica and silicon carbide in a 80DEG C dryingoven for 5h, and conducting natural cooling to obtain a component C; and during use, fully mixing the component C, the component B and 100 mass parts of ES-06 epoxy silicone resin. The high efficiencyheat prevention and heat insulation coating material provided by the invention has the characteristics of low density, good ablation resistance, no swelling or cracking after coating curing, etc., and has excellent comprehensive performance.

Description

technical field [0001] The invention relates to a low-density, heat-proof, heat-insulating, ablation-resistant and erosion-resistant coating and a preparation method thereof, which are applied to external thermal protection of solid rocket motors flying at high Mach numbers. Background technique [0002] With the development of modern aerospace technology, aircraft (solid rockets) fly in the atmosphere for a long time at a high Mach number. Due to aerodynamic heating, if the external thermal protection measures are not effective, not only the instruments in the bomb bay cannot work normally, but also the single metal materials Body structures cannot withstand such high thermal loads. In order to ensure the safe flight of the aircraft at a high Mach number in the atmosphere, it is necessary to protect the outer surface of the aircraft from heat. Thermal protection materials should have good thermal insulation properties, good erosion resistance, high mechanical properties an...

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Problems solved by technology

[0007] In order to overcome the deficiencies of the prior art, the present invention provides a low-density, high-efficiency heat-proof and heat-insulating coating, medium-temperature curing, and good spraying processability, which relates to matrix resin screening of heat-proof and heat-insulating coatings, and suitable medium-temperature curing systems. Compatibility optimization, functional filler selection and dosage optimization, diluent compatibility and process verification test, coating performance test and preparation, and spraying process test can solve the problems of aircraft with high Mach number and long flight time The problem of external heat protection focuses on solving the problems of poor heat insulation, high brittleness, high temperature curing limitations and bulging cracks after curing of the existing coatings.

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