High temperature-resistant flame-retardant insulating paint and preparation thereof

Abstract

The invention relates to high-temperature resistant flame-retarding insulating coating and a method for preparing the same, which belong to the material technical field and are used for heat insulation in an aircraft. The compositions by weight percentage of the compositions of the high-temperature resistant flame-retarding insulating coating are: 60 to 70 percent of organic silicone resins, 15 to 20 percent of hollow microballoon filling insulant, 10 to 15 percent of composite fire retardant and 1 to 3 percent of auxiliary agent. The high-temperature resistant flame-retarding insulating coating has low density, high adhesion, good fire resistance and high heat insulation efficiency. The preparation method is to prepare the product with a mesopore structure through addition of the composite fire retardant, coupling agent and the auxiliary agent into the organic silicone resins, uniform mixture of the compositions through high-speed ball milling, addition of the hollow microballoon filling insulant, and low-speed stirring and uniform dispersion.

Description

technical field [0001] The invention relates to a high-temperature-resistant, flame-retardant and heat-insulating coating and a preparation method thereof, belonging to the technical field of materials, and used for heat-insulating protection in aviation vehicles. Background technique [0002] For heat insulation coatings for aircraft, they must have the characteristics of low density, high temperature resistance, flame retardancy, high adhesion and high heat insulation efficiency. , but comprehensive indicators such as temperature resistance, flame retardancy, heat insulation, adhesion, and density are still difficult to meet the stringent requirements in the aviation and aerospace fields. The main problems are: thermal insulation coatings with organic resins as binders have good designability and high thermal insulation efficiency, but generally have low temperature resistance, lower than 200 ° C, poor or no flame retardancy This is fatal to the aircraft, because the heat...

AI Technical Summary

Problems solved by technology

[0002] For aircraft heat insulation coatings, it must have the characteristics of low density, high temperature resistance, flame retardancy, high adhesion and high heat insulation efficiency, while the existing Although the single performance index of thermal insulation coatings has reached a relatively high level, it is still difficult to meet the stringent requirements of aviation and aerospace fields with comprehensive indicators such as temperature resistance, flame retardancy, heat insulation, adhesion, and density.

The main problems are: thermal insulation coatings with organic resins as binders have good designability and high thermal insulation efficiency, but generally have low temperature resistance, lower than 200 ° C, poor or no flame retardancy This is fatal to the aircraft. The high temperature-resistant heat-insulating coating must be mixed with a large amount of heat-resistant filler, resulting in an increase in density, which is greater than 0.4g / cm3. The efficiency is reduced, and the thermal conductivity is greater than 0.1w / m·k; while the inorganic heat-insulating coating with silicate or phosphate as the binder has the characteristics of high temperature resistance and non-combustibility, but there are low adhesion, high density, greater than 0.4g / cm3, etc.