Properties Study of Graphite Solid Waste Based Electrothermal Energy Storage and Insulation Composite Sheet
Graphite waste has high conductivity and good stability,which shows strong application potential in electric heat composite panels,providing a possibility for the comprehensive utilization of graphite waste and the sustainable develop-ment of the graphite development and utilization industry.Based on this,a new type of electric heat composite panel was pre-pared by layering and coating with graphite waste-based electric heat panel material and thermal storage material and thermal insulation material.The application performance of the composite panel was explored by testing the volume resistivity of the composite panel with different amounts of spherical graphite tailings at different temperatures and humidities,as well as the in-fluence of the voltage and connection method on its heating performance.The results showed that the optimal amount of spheri-cal graphite tailings in the electric heat layer is 9%,and the permeability threshold of the composite panel is 8%～9%.When the alternating voltage is adjusted to 36 V,the composite panel has better heating performance and higher heating rate,and the surface temperature of the composite panel rises faster.Compared with the series connection,the parallel connection of the com-posite panel has better heating performance,the surface heating rate is 2～3 times that of the series connection.Under these conditions,the composite panel has stable performance and is almost unaffected by the ambient temperature and humidity,pro-viding new theoretical basis for the practical application of graphite waste-based multi-functional composite panels.
万方数据
维普
