Preparation method of a new composite diatomite phase change energy storage material carrier
A phase change energy storage material, diatomite technology, applied in heat exchange materials, chemical instruments and methods, etc., can solve the problems of high cost, hinder the large-scale application of phase change energy storage materials, etc., and achieve comprehensive performance improvement. Effect
Inactive Publication Date: 2020-07-03
QINGHAI UNIVERSITY
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Problems solved by technology
However, the high cost of these materials will hinder the large-scale application of phase change energy storage materials
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[0026] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0027] The application principle of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0028] Such as figure 1 As shown, the preparation method of the novel composite diatomite phase change energy storage material carrier provided by the embodiment of the present invention is:
[0029] S101: After uniformly dispersing a certain quality of diatomite in the organic sugar aqueous solution (the purity of diatomite is more than 90%, wherein SiO 2 The ratio to the amount of C in organic sugars is 4:1 to 1:4) A small amount of concentrated sulfuric acid (concentration above 9...
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The invention belongs to the technical field of composite material preparation, and discloses a preparation method of a novel composite diatomite phase change energy storage material carrier. A certain amount of diatomite is dispersed in a sugar aqueous solution, and a small amount of concentrated sulfuric acid is added; heat insulation treatment is carried out on the mixed slurry in an oven for along time to remove water form sugars and evenly mix the diatomite and carbon; the precursor is rapidly heated to a specified temperature by introducing Ar gas into a high temperature furnace for calcining, and the temperature is rapidly reduced to room temperature after a period of time; the cooled mixture is subjected to medium temperature heat treatment in a muffle furnace under air conditionsto eliminate residual carbon in a product; and the morphology and composition of the product are tested. Under the premise of retaining a porous structure of the diatomite, the preparation method grows SiC nanowires on the surface of diatomite particles and inside pore channels. The high thermal conductivity of the SiC nanowires and the network structure formed by the SiC nanowires can be used toimprove the comprehensive performance of the diatomite-based phase change energy storage material.
Description
technical field [0001] The invention belongs to the technical field of composite material preparation, and in particular relates to a preparation method of a novel composite diatomite phase change energy storage material carrier. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: [0003] Phase change energy storage materials store temporarily unused energy and release it when needed, so as to alleviate the contradiction of energy demand and save energy. As a phase change material, the following requirements must generally be met: high energy storage density; high energy conversion efficiency; good stability; unit component materials are not easy to volatilize and decompose; for multi-component materials, it is required that the components be firmly combined; Segregation will occur; non-toxic, non-corrosive, non-flammable and explosive, and low in price; high thermal conductivity, so that energy can be stored or...
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IPC IPC(8): C09K5/06
CPCC09K5/06
Inventor 马斌马丽莉马国俊张谦信苏科
Owner QINGHAI UNIVERSITY