THE LOW-HEAT-CONDUCTING DISPERSED AGGREGATES APPLICATION FOR THERMAL CONTROL OF HEAT EXCHANGE PROCESSES IN AEROSPACE SYSTEMS COMPOSITE STRUCTURES
The article presents the results of research on the creation of heat-insulating screens from low- heat-conducting oxide powders in composite structures of aerospace systems. The formation of contact thermal resistance between metal surfaces in a contact pair with powder fillers made of materials of low thermal conductivity is considered. The increase in thermal resistance in comparison with the resistance at direct contact of surfaces and the dependence of the resistance on the dispersion and the number of filler particles is established on the basis of data from specially conducted experiments. The influence of the combination of the main materials of contact pairs and filler materials, which allows creating compounds with optimal thermal properties, is considered.