Red mud-paraffin composite phase-change energy storage material and mixed grinding preparation method thereof

Abstract

The invention discloses a red mud-paraffin composite phase-change energy storage material which comprises paraffin and red mud. The mass ratio of paraffin to red mud is (0.4-0.55):(0.45-0.6). The invention also discloses a technical scheme for preparing the material through a mixed grinding process. Thermogravimetry and differential thermal analysis tests are adopted for representing the heat stability of the prepared phase-change energy storage material. The preparation method for the phase-change energy storage material disclosed by the invention is simple in process, convenient in operation and suitable for industrial mass production. When the phase-change energy storage material disclosed by the invention is used as a thermal insulation material for a building, the indoor and outdoor heat transferring amplitude of the building can be effectively reduced, the indoor temperature fluctuation can be reduced, the temperature scope suitable for a human body can be kept, the use of heat supply or air conditioner can be reduced and the energy-saving effect of the building can be realized.

Description

technical field [0001] The invention relates to a phase change energy storage material and a preparation method thereof, in particular to a red mud-paraffin composite phase change energy storage material and a preparation method thereof. Background technique [0002] Phase change energy storage material, referred to as phase change material (PCM-Phase Change Material) refers to a substance that changes shape with temperature changes and can provide latent heat, and uses its exothermic or endothermic characteristics during the phase change process to release energy. (or storage). Adding phase-change energy storage materials to gypsum and cement is used as building decoration and insulation materials. Adding phase-change materials to building materials not only does not affect the basic properties of building materials, but can effectively reduce the heat transmission through the maintenance structure. Better thermal insulation and energy saving effect, and improved living co...

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Problems solved by technology

[0006] The phase change composite material is prepared by embedding the phase change material paraffin into the porous material, which can overcome the characteristics of the small thermal conductivity of the organic phase change energy storage material, and provide a phase change energy storage with low preparation cost, simple preparation method and good application performance Material preparation method

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