Heat storage material and preparation method thereof

Abstract

The invention discloses a heat storage material and a preparation method, the heat storage material is prepared by mixing paraffin, expandable graphite, active carbon and copper powder. wherein paraffin mass fraction accounts for 65%, paraffin melting point is selected between 50 and 70 DEG C, expandable graphite mass fraction accounts for 15%, and mass fraction sum of active carbon and copper powder accounts for 20%. The material has the advantages of fast heat absorption and heat release, no corrosivity to metal containers and unchanged profile after phase transition.

Description

1. Technical field

[0001] The invention relates to the field of phase change heat storage materials, in particular to a heat storage material prepared by compounding organic matter, expanded graphite, activated carbon and copper powder. 2. Background technology

[0002] Energy saving and environmental protection are an important topic in the field of energy utilization. Using phase change latent heat of phase change heat storage materials to store energy is a new type of energy saving technology. During the phase change process, the phase change material absorbs the heat of the surrounding environment, and releases heat to the surrounding environment when the temperature of the surrounding environment decreases, so as to achieve the purpose of controlling the temperature of the surrounding environment and saving energy. It has broad application prospects in solar energy utilization, heat energy recovery, air conditioning and refrigeration, building energy saving, aerospace a...

Examples

Example Embodiment

[0018] The following examples further illustrate the implementation of the present invention:

[0019] Place the strip-shaped activated carbon as the cathode in the copper electroplating solution for electroplating. After completion, the activated carbon is pulverized and ground to obtain an activated carbon-copper powder mixture; the expandable graphite and the activated carbon-copper powder mixture are mixed in a 3:4 mass ratio to form expandable The graphite-activated carbon-copper powder mixture is dried in a vacuum drying oven at 60°C for 10 hours; the dried expandable graphite-activated carbon-copper powder mixture is placed in a stainless steel container and heated to 800°C to expand for 60 seconds to obtain expanded graphite ; Take 65g of paraffin wax with a melting point of 60°C and 35g of expanded graphite-activated carbon-copper powder mixture and mix, heat to 80°C, blend, and absorb under stirring for about 1 hour to make a heat storage material. The phase transition ...

1. Technical field

[0001] The invention relates to the field of phase change heat storage materials, in particular to a heat storage material prepared by compounding organic matter, expanded graphite, activated carbon and copper powder. 2. Background technology

[0002] Energy saving and environmental protection are an important topic in the field of energy utilization. Using phase change latent heat of phase change heat storage materials to store energy is a new type of energy saving technology. During the phase change process, the phase change material absorbs the heat of the surrounding environment, and releases heat to the surrounding environment when the temperature of the surrounding environment decreases, so as to achieve the purpose of controlling the temperature of the surrounding environment and saving energy. It has broad application prospects in solar energy utilization, heat energy recovery, air conditioning and refrigeration, building energy saving, aerospace a...

Examples

Example Embodiment

[0018] The following examples further illustrate the implementation of the present invention:

[0019] Place the strip-shaped activated carbon as the cathode in the copper electroplating solution for electroplating. After completion, the activated carbon is pulverized and ground to obtain an activated carbon-copper powder mixture; the expandable graphite and the activated carbon-copper powder mixture are mixed in a 3:4 mass ratio to form expandable The graphite-activated carbon-copper powder mixture is dried in a vacuum drying oven at 60°C for 10 hours; the dried expandable graphite-activated carbon-copper powder mixture is placed in a stainless steel container and heated to 800°C to expand for 60 seconds to obtain expanded graphite ; Take 65g of paraffin wax with a melting point of 60°C and 35g of expanded graphite-activated carbon-copper powder mixture and mix, heat to 80°C, blend, and absorb under stirring for about 1 hour to make a heat storage material. The phase transition ...