A shape-fixed phase-change material with sintered carbon as a carrier and its preparation method

Abstract

The invention discloses a shape-stabilized phase change material with shaped sintered carbon as the carrier and a preparation method thereof. The shape-stabilized phase change material with the shapedsintered carbon as the carrier and the preparation method thereof solve the technical problems easy loss of accumulated energy, low thermal conductivity, poor encapsulation properties and poor dimension and shape design of existing composite phase change materials. The shape-stabilized phase change material with the shaped sintered carbon as the carrier is composed of, by weight percentage, 85-95% of organic high-polymer phase change materials and 5-15% of the shaped sintered carbon, wherein the shaped sintered carbon is processed through surface compatibility treatment; the high-polymer phase change materials are distributed inside gaps formed among particles of the shaped sintered carbon. The preparation method of the shape-stabilized phase change material with the shaped sintered carbon as the carrier comprises preparation of the shaped sintered carbon, surface compatibility treatment, heating and melting of the phase change materials and pressurized permeation.

Description

Technical field

[0001] The invention relates to the technical field of phase-change energy storage materials, in particular to a shape-setting phase-change material with shaped sintered carbon as a carrier and a preparation method thereof. Background technique

[0002] Phase change materials have a wide range of applications. Although the theoretical research on phase change energy storage technology is relatively short, it has developed rapidly and has become a new material with great value in energy utilization. The phase change material can be accompanied by a large phase change latent heat during the phase change process, and the material is at a constant temperature during this process, which makes the field of energy storage and temperature control convenient and effective.

[0003] Among the commonly used phase change materials, organic polymers have higher latent heat of phase change. Compared with inorganic hydrated salt phase change materials, there is no overcooling and ...

Examples

Embodiment 1

[0033] Step 1: Preparation of molded sintered carbon

[0034] Mix coconut shell powder activated carbon particles with high density polyethylene (HDPE) at a mass ratio of 5:1, mix them evenly, and put them into a forming mold at a temperature of 150°C and a pressure of 10-15MPa for 30 minutes to form the desired shape. Sintered carbon.

[0035] Step 2: Surface compatibility treatment of molded sintered carbon

[0036] First mix 95% ethanol and 5% water into an alcohol-water solution, add acetic acid to make the pH 4.5-5.5, add the silane coupling agent KH570 under stirring to make the concentration reach 2%, hydrolyze for 5 minutes, and then add the obtained in step 1 The sintered carbon material is added to it, configured into a 20g / L solid-liquid suspension, heated to 45°C, treated for 1 hour, filtered and dried at low temperature after the treatment.

[0037] Step 3: Preparation of shaped sintered carbon composite shaped phase change material

[0038] Put the molded sintered carbon...

Embodiment 2

[0041] Step 1: Preparation of molded sintered carbon

[0042] The powdered activated carbon particles made from coconut shell and high-density polyethylene (HDPE) are mixed at a mass ratio of 3:1, stirred evenly, and then put into a forming mold at a temperature of 150°C, a pressure of 10-15 MPa, and a pressure of 30 minutes to form the desired shape.

[0043] Step 2: Surface compatibility treatment of molded sintered carbon

[0044] First mix 95% ethanol and 5% water into an alcohol-water solution, add acetic acid to make the pH 4.5-5.5, add the silane coupling agent KH570 under stirring to make the concentration reach 2%, hydrolyze for 5 minutes, and then add the obtained in step 1 The sintered carbon material is added to it, configured into a 20g / L solid-liquid suspension, heated to 45°C, treated for 1 hour, filtered and dried at low temperature after the treatment.

[0045] Step 3: Preparation of shaped sintered carbon composite shaped phase change material

[0046] Put the molded ...

Embodiment 3

[0049] Step 1: Preparation of molded sintered carbon

[0050] Mix coconut shell powder activated carbon particles with high density polyethylene (HDPE) at a mass ratio of 5:1, stir evenly, and put them into a forming mold at a temperature of 150°C and a pressure of 10 to 15 MPa for 30 minutes to form a desired shape and sinter carbon.

[0051] Step 2: Surface compatibility treatment of molded sintered carbon

[0052] First mix 95% ethanol and 5% water into an alcohol-water solution, add acetic acid to make the pH 4.5-5.5, add the silane coupling agent KH550 under stirring to make the concentration reach 2%, hydrolyze for 5 minutes, and then add the obtained in step 1. The sintered carbon material is added to it, configured into a 20g / L solid-liquid suspension, heated to 45°C, treated for 1 hour, filtered after the treatment, and dried at low temperature.

[0053] Step 3: Preparation of shaped sintered carbon composite shaped phase change material

[0054] Put the molded sintered carbo...

Technical field

[0001] The invention relates to the technical field of phase-change energy storage materials, in particular to a shape-setting phase-change material with shaped sintered carbon as a carrier and a preparation method thereof. Background technique

[0002] Phase change materials have a wide range of applications. Although the theoretical research on phase change energy storage technology is relatively short, it has developed rapidly and has become a new material with great value in energy utilization. The phase change material can be accompanied by a large phase change latent heat during the phase change process, and the material is at a constant temperature during this process, which makes the field of energy storage and temperature control convenient and effective.

[0003] Among the commonly used phase change materials, organic polymers have higher latent heat of phase change. Compared with inorganic hydrated salt phase change materials, there is no overcooling and ...

Examples

Embodiment 1

[0033] Step 1: Preparation of molded sintered carbon

[0034] Mix coconut shell powder activated carbon particles with high density polyethylene (HDPE) at a mass ratio of 5:1, mix them evenly, and put them into a forming mold at a temperature of 150°C and a pressure of 10-15MPa for 30 minutes to form the desired shape. Sintered carbon.

[0035] Step 2: Surface compatibility treatment of molded sintered carbon

[0036] First mix 95% ethanol and 5% water into an alcohol-water solution, add acetic acid to make the pH 4.5-5.5, add the silane coupling agent KH570 under stirring to make the concentration reach 2%, hydrolyze for 5 minutes, and then add the obtained in step 1 The sintered carbon material is added to it, configured into a 20g / L solid-liquid suspension, heated to 45°C, treated for 1 hour, filtered and dried at low temperature after the treatment.

[0037] Step 3: Preparation of shaped sintered carbon composite shaped phase change material

[0038] Put the molded sintered carbon...

Embodiment 2

[0041] Step 1: Preparation of molded sintered carbon

[0042] The powdered activated carbon particles made from coconut shell and high-density polyethylene (HDPE) are mixed at a mass ratio of 3:1, stirred evenly, and then put into a forming mold at a temperature of 150°C, a pressure of 10-15 MPa, and a pressure of 30 minutes to form the desired shape.

[0043] Step 2: Surface compatibility treatment of molded sintered carbon

[0044] First mix 95% ethanol and 5% water into an alcohol-water solution, add acetic acid to make the pH 4.5-5.5, add the silane coupling agent KH570 under stirring to make the concentration reach 2%, hydrolyze for 5 minutes, and then add the obtained in step 1 The sintered carbon material is added to it, configured into a 20g / L solid-liquid suspension, heated to 45°C, treated for 1 hour, filtered and dried at low temperature after the treatment.

[0045] Step 3: Preparation of shaped sintered carbon composite shaped phase change material

[0046] Put the molded ...

Embodiment 3

[0049] Step 1: Preparation of molded sintered carbon

[0050] Mix coconut shell powder activated carbon particles with high density polyethylene (HDPE) at a mass ratio of 5:1, stir evenly, and put them into a forming mold at a temperature of 150°C and a pressure of 10 to 15 MPa for 30 minutes to form a desired shape and sinter carbon.

[0051] Step 2: Surface compatibility treatment of molded sintered carbon

[0052] First mix 95% ethanol and 5% water into an alcohol-water solution, add acetic acid to make the pH 4.5-5.5, add the silane coupling agent KH550 under stirring to make the concentration reach 2%, hydrolyze for 5 minutes, and then add the obtained in step 1. The sintered carbon material is added to it, configured into a 20g / L solid-liquid suspension, heated to 45°C, treated for 1 hour, filtered after the treatment, and dried at low temperature.

[0053] Step 3: Preparation of shaped sintered carbon composite shaped phase change material

[0054] Put the molded sintered carbo...

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