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A high temperature phase change heat storage material

A heat storage material and high-temperature phase change technology, which is applied in the field of ceramic materials, can solve the problems of stable operation of heat storage systems without high-temperature phase change, and achieve the effects of eliminating structure and property attenuation, achieving control, and low production costs

Active Publication Date: 2020-12-01
JIANGSU JIANAI HIGH TEMPERATURE MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, so far, there is still no mature high-temperature phase change heat storage system operating stably

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The first step is to mix 40wt% of quartz sand powder, 30wt% of corundum powder, 15wt% of copper oxide, and 15wt% of zinc oxide in proportion according to the proportion, press molding at 100MPa, heat treatment at 900°C for 3 hours, crush and grind 1. Sieve to obtain sieve material A with particle size less than 0.088mm.

[0036] In the second step, mix 50wt% of sieve material A, 30wt% of carbon black, 10wt% of silicon powder, and 10wt% of aluminum oxalate according to the proportion, heat treatment at 200°C for 2 hours, grind and sieve to obtain a particle size smaller than Abrasive B of 0.045 mm.

[0037] In the third step, 20wt% corundum particles, 30wt% corundum powder, 20wt% abrasive B, 20wt% aluminum-silicon alloy, 5wt% silicon powder, 4wt% silicon carbide powder, 1wt% thermosetting phenolic resin Mix evenly according to the ratio, press and shape at 50 MPa, and heat-treat at 1000° C. for 2 hours to obtain the high-temperature phase-change heat storage material. ...

Embodiment 2

[0040] The first step is to mix 50wt% of quartz sand powder, 30wt% of corundum powder, 15wt% of copper oxide, and 5wt% of zinc oxide in proportion according to the proportion, press molding at 50MPa, place heat treatment at 1000°C for 2 hours, crush and grind 1. Sieve to obtain sieve material A with particle size less than 0.088mm.

[0041] In the second step, 60wt% of sieving material A, 20wt% of carbon black, 10wt% of silicon powder, and 10wt% of aluminum oxalate are mixed uniformly in proportion, placed in 150°C for heat treatment for 3 hours, ground and sieved to obtain a particle size smaller than Abrasive B of 0.045 mm.

[0042] In the third step, 30wt% corundum particles, 10wt% corundum powder, 10wt% abrasive B, 40wt% aluminum-silicon alloy, 4wt% silicon powder, 1wt% silicon carbide powder, 5wt% thermosetting phenolic resin Mix evenly according to the ratio, press and shape at 60 MPa, and heat treat at 1200° C. for 2 hours to obtain the high-temperature phase-change he...

Embodiment 3

[0045] The first step is to mix 60wt% of quartz sand powder, 10wt% of corundum powder, 15wt% of copper oxide, and 15wt% of zinc oxide in proportion according to the proportion, press molding at 70MPa, place heat treatment at 1000°C for 2 hours, crush and grind 1. Sieve to obtain sieve material A with particle size less than 0.088mm.

[0046] In the second step, mix 60wt% of sieve material A, 19wt% of carbon black, 1wt% of silicon powder, and 20wt% of aluminum oxalate in proportion, heat treatment at 250°C for 1 hour, grind and sieve to obtain a particle size smaller than Abrasive B of 0.045 mm.

[0047] In the third step, 40wt% corundum particles, 10wt% corundum powder, 10wt% abrasive B, 30wt% aluminum-silicon alloy, 1wt% silicon powder, 5wt% silicon carbide powder, 4wt% thermosetting phenolic resin Mix evenly according to the ratio, press and shape at 70 MPa, and heat-treat at 1000°C for 3 hours to obtain the high-temperature phase-change heat storage material.

[0048] The w...

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Abstract

A high-temperature phase-change heat storage material, which belongs to the technical field of ceramic materials, is prepared according to the following steps: in the first step, quartz sand powder, corundum powder, copper oxide, and zinc oxide are mixed uniformly in proportion, and heat-treated after pressing and forming to obtain sieved Material A; in the second step, the screening material A, carbon black, silicon powder, and aluminum oxalate are mixed evenly according to the proportion, and the grinding material B is obtained after heat treatment; in the third step, the corundum particles, corundum powder, grinding material B, aluminum silicon Alloy, silicon powder, silicon carbide powder, and thermosetting phenolic resin are mixed evenly according to the proportion, and the finished product is obtained after compression molding and heat treatment. The working temperature of the high-temperature phase change heat storage material prepared by this method is greater than 600°C, and it has high heat storage density and thermal conductivity. Large size, high compressive strength, high thermal shock stability, low production cost and simple process.

Description

technical field [0001] The invention belongs to the technical field of ceramic materials, and in particular relates to a high-temperature phase-change heat storage material and a preparation method thereof. Background technique [0002] Phase change heat storage materials are mainly used in the fields of industrial waste / waste heat recovery, comprehensive solar energy development, and high temperature energy saving. At present, the hybrid sintering method and the melt infiltration method are mainly used to prepare phase change heat storage materials, but there are some shortcomings. The mixed sintering method is to mix the matrix material, phase change material, additives, etc., and obtain the heat storage material after molding and sintering. This method is relatively simple, but when the sintering temperature is too high or the content of the phase change material is large, the evaporation loss of the phase change material will be caused, thereby reducing the heat storage...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/06C22C1/05C22C29/00C22C29/12B22F1/00
CPCC09K5/063C22C1/051C22C29/00C22C29/12B22F1/10
Inventor 杨政宏徐华伟张品为李杰黄锋
Owner JIANGSU JIANAI HIGH TEMPERATURE MATERIAL
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