Heat insulation performance testing device and testing method for thermal protection material type selection

Abstract

The invention discloses a heat insulation performance testing device and testing method for thermal protection material type selection, the whole testing device comprises a butane flame spray gun, a fixing table and a refractory brick, a sample is inserted into the refractory brick, and thermometers are arranged at the two ends of the sample. During testing, a to-be-tested sample is placed in the heat preservation module, the heating module is used for heating the front face of the sample under the required heat flux density, and the heat insulation performance of the sample is represented through the heating rate of the back face of the sample. The testing device is simple, easy to operate and relatively low in testing cost, can be used for well testing the heat insulation performance of the material under laboratory conditions, and is very suitable for characterizing the heat insulation performance of the thermal protection material in the research and development stage of the thermal protection material; and then whether the heat insulation performance of the prepared material meets the requirement under the given heat flux density and heating time or not is determined, so that model selection and subsequent application of the thermal protection material are achieved, and the method has great application prospects and use value.

Description

technical field [0001] The invention belongs to the field of thermal protection, and relates to a thermal insulation performance testing device and a testing method for the selection of thermal protection materials. Background technique [0002] "Heat" has always been accompanied by the development of aerospace technology, such as the high temperature generated by the combustion of fuel in rocket thrusters and the high temperature generated by aerodynamic heating on the surface of the aircraft. Therefore, thermal protection materials are particularly critical in the field of aerospace technology. At the same time, in the aerospace field, the heat flux density of materials is generally high, and the thermal insulation performance of thermal protection materials under high heat flux density is one of its key performance indicators, so it needs to be characterized by appropriate methods. [0003] The currently used test methods for thermal insulation performance (such as graphi...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art, and provide a heat insulation performance testing device and testing method for thermal protection material selection, so as to solve the problem that existing equipment for heat insulation performance testing of thermal protection materials is relatively large. , the testing process is complicated, which is not conducive to the problem of using it under laboratory conditions

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