Ceramic spiral fiber reinforced silicone rubber light ablation resistance thermal insulation coating and application thereof

Abstract

The invention relates to a ceramic spiral fiber reinforced silicone rubber light ablation resistance thermal insulation coating and application of the ceramic spiral fiber reinforced silicone rubber light ablation resistance thermal insulation coating, the ceramic spiral fiber reinforced silicone rubber light ablation resistance thermal insulation coating is a double-layer composite coating systemand is compounded from a TI thermal insulation coating on the inner layer and a TA ablation resistance coating on the outer layer, the thickness ratio of the TI thermal insulation coating to the TA ablation resistance coating is (4-7):(2-5), a component B is added in a component A of the TI coating prepared according to the formula in the application, the mixture is blended by using a solvent inthe component A to the specified spraying viscosity and is blade-coated, roller-coated or sprayed to the thickness of 4-7 mm on the surface of a device; a component D is added in a component C of theTA coating prepared according to the formula, the mixture is blended by using a solvent in the component C to the specified spraying viscosity, is sprayed on the surface of a dried TI coating film, and is blade-coated or roller-coated to the thickness of 2-5 mm. Compared with the prior art, the bonding strength of a formed coating is high, and the coating can resist the instantaneous high temperature of more than 1500 DEG C, has an excellent heatproof effect, effectively protects a launcher against ablation damages, and is higher in strength.

Description

technical field [0001] The invention relates to the technical field of high-strength ablation-resistant coatings, in particular to a light-weight ablation-resistant and heat-insulating coating of ceramic spiral fiber reinforced silicone rubber and its application. Background technique [0002] With the development of my country's aerospace and national defense technology, ablation-resistant coatings have been used more and more. For example, the surface of the bundled launch vehicle body needs to be coated with a layer of ablation-resistant and heat-resistant coating to resist the heat flow load of hundreds to tens of thousands of kilowatts per square meter. In addition, the missile launcher needs to be coated with a layer of ablation-resistant coating on the surface to resist the high temperature of the gas flow temperature of 2400K and the high-speed gas erosion. At present, the traditional heat-resistant coatings on the market use phenolic resin, epoxy resin, etc. as mat...

AI Technical Summary

Problems solved by technology

At present, the traditional heat-resistant coatings on the market use phenolic resin, epoxy resin, etc. as matrix resins, relying on the addition of low-density fillers (cork powder, hollow glass microspheres, etc.) ) to achieve the anti-heat insulation performance of the coating. This type of coating achieves the protective effects of ablation, heat insulation and erosion resistance by mechanically mixing various fillers, which leads to the density of this type of coating being much greater than 1.0g / cm3, which cannot meet the requirements Aerospace Lightweight Requirements

In addition, the existing ablation-resistant and heat-resistant coating products have a large construction thickness, and most of them are mainly scraped coating, which has poor workability, and cannot be dried and cured at room temperature, which is inconvenient to use

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