In order to simulate the thermal insulation and flame retardant effect of SiO2 aerogel cotton felt materials between electric cores of new energy power batteries in the high-temperature and high-pressure environment caused by thermal runaway,collision extrusion,puncture,etc,this experiment designed a system and method to detect the thermal insulation performance of aerogel materials in the high-temperature and high-pressure environment.By measuring and recording the temperature of the hot and cold surfaces of aerogel materials through the temperature measurement and analysis system to calculate the temperature differ-ence between the hot and cold surfaces of aerogel materials,the thermal insulation performance of aerogel materials is judged.At the same time,the glass fiber SiO2 aerogel cotton felt of the same batch was characterized by thermal conductivity,compressive strength,thermogravimetric analysis and other properties.The test results show that the measured performance of glass fiber SiO2 aerogel cotton felt is better than the requirements specified in standard GB/T 34336-2017"Reinforced Nanoporous Aerogel Prod-ucts for Thermal Insulation",and can be used in the field of new energy vehicles.
关键词
SiO2气凝胶/隔热性能/高温高压/冷热面温度差
Key words
SiO2 aerogel/thermal insulation performance/high temperature and high pressure/temperature difference between hot and cold surfaces
维普
万方数据