Highly-heat-conductive shaped phase-change heat-storage material and preparation method thereof
A phase-change heat storage material and heat storage material technology, applied in the field of phase-change heat storage materials, can solve problems such as liquid leakage, poor thermal conductivity, and insufficient solar energy, and achieve fast heat absorption and heat release, high thermal conductivity, and phase-change heat storage. The effect of high enthalpy change
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[0019] Below with example, the embodiment of the present invention is described further:
[0020] Process the porous copper foam into a cylinder of φ46*1500. Make a mold according to the size of φ46*1500, and put the finished porous copper foam into the mold. The dry graphite powder is placed in a closed container and heated to 800°C to form expanded graphite. Heat and melt the paraffin, add expanded graphite according to 10% mass ratio, stir and absorb for 1 hour, then inject the mixture into the mold, so that the liquid amount of the mixture just submerges the porous copper foam. After cooling and removing the mold, a shaped heat storage material is obtained. Porous copper foam is a material with a porosity of 98%, so the mass fraction of porous copper foam in the mixture accounts for 16.8%, the mass fraction of paraffin wax accounts for 74.88%, and the mass fraction of expanded graphite accounts for 8.32%. The latent heat of phase change of the material is 136kJ / kg, and ...
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