Char /char compound material antioxygenic property test device

Abstract

The invention belongs to a composite material testing technology, relating to an improvement on an oxidation resistance testing device of a carbon / carbon composite material, which comprises a platform(8), a support(9), a heating device, a temperature testing device (7) and a measuring balance(5). The improvement on an oxidation resistance testing device of a carbon / carbon composite material is characterized in that: the heating device is a medium frequency power supply(1) with a induction coil(2); the measuring balance(5) is an electronic analytical balance; measured sample is arranged in a testing crucible(10) at the central hole of the induction coil(2), and hung on the hook at the bottom of the electronic analytical balance; the temperature testing device(7) is an infrared radiation thermometer; a computer(6) is respectively connected with the output terminals of the electronic analytical balance and the infrared radiation thermometer through serial ports. The improvement on an oxidation resistance testing device of a carbon / carbon composite material has the advantages of convenient and quick operation and short measuring interval; the measuring precision is high with the computer controlling the measurement process automatically; and the weight loss situation of carbon / carbon composite material can be measured online.

Description

technical field [0001] The invention belongs to composite material testing technology and relates to the improvement of a carbon / carbon composite material anti-oxidation performance testing device. Background technique [0002] Since its introduction in 1958, carbon / carbon composite materials have been highly valued in the field of cutting-edge technology. It is still the preferred material for strategic missile end structures and solid rocket motor nozzles, and has been well applied in the field of aviation brakes. At present, the research and application level of carbon / carbon composite materials is second only to resin-based composite materials, and has moved towards industrial application before metal-based composite materials and ceramic-based composite materials. However, carbon starts to oxidize in an aerobic atmosphere at 370 °C, and rapidly oxidizes above 500 °C, leading to catastrophic failure of carbon / carbon composites. Therefore, anti-oxidation protection must ...

AI Technical Summary

Problems solved by technology

At present, the carbon / carbon composite material is carried out anti-oxidation property testing device by a platform 8, the bracket 9 fixed on the platform 8, the heating device installed on the bracket 9, the temperature measuring device 7 fixed on the platform or on the heating device It is composed of a measuring balance 5, and most of the heating devices use resistance wires to heat silicon-molybdenum ceramic tubes. The measuring balance 5 cannot directly output digital data, and can only be recorded manually

The existing measurement device has a long measurement interval and cannot measure the weight loss of carbon / carbon composite materials online, and the measurement accuracy is low

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