A phase change heat storage material

Abstract

The invention relates to a phase change thermal storage material, and belongs to the technical field of ceramic materials. The material is prepared from the following steps that 1, quartz sand powder,corundum powder, copper oxide and zinc oxide are mixed to be uniform in proportion, compression moulding is conducted, then thermal treatment is conducted to obtain a screening material A; 2, the screening material A, carbon black and aluminum oxalate hydrate are mixed to be uniform in proportion, thermal treatment is conducted, and then an abrasive material B is obtained; 3, corundum particles,the corundum powder, the abrasive material B, an aluminium-silicon alloy and thermosetting phenolic resin are mixed to be uniform in proportion, compression moulding and thermal treatment are conducted, and a finished product is obtained. The phase change thermal storage material has the advantages of being large in thermal storage density, large in coefficient of thermal conductivity, high in compressive strength, high in thermal shock resistance, low in production cost, simple in process and the like.

Description

technical field

[0001] The invention belongs to the technical field of ceramic materials, and in particular relates to a phase change heat storage material and a preparation method thereof. Background technique

[0002] Phase change heat storage materials are mainly used in the fields of industrial waste / waste heat recovery, comprehensive solar energy development, and high temperature energy saving. At present, the hybrid sintering method and the melt infiltration method are mainly used to prepare phase change heat storage materials, but there are some shortcomings. The mixed sintering method is to mix the matrix material, phase change material, additives, etc., and obtain the heat storage material after molding and sintering. This method is relatively simple, but when the sintering temperature is too high or the content of the phase change material is large, the evaporation loss of the phase change material will be caused, thereby reducing the heat storage performance of t...