A phase change heat storage material

Abstract

The invention relates to a phase change thermal storage material, and belongs to the technical field of ceramic materials. The material is prepared from the following steps that 1, quartz sand powder,corundum powder, copper oxide and zinc oxide are mixed to be uniform in proportion, compression moulding is conducted, then thermal treatment is conducted to obtain a screening material A; 2, the screening material A, carbon black and aluminum oxalate hydrate are mixed to be uniform in proportion, thermal treatment is conducted, and then an abrasive material B is obtained; 3, corundum particles,the corundum powder, the abrasive material B, an aluminium-silicon alloy and thermosetting phenolic resin are mixed to be uniform in proportion, compression moulding and thermal treatment are conducted, and a finished product is obtained. The phase change thermal storage material has the advantages of being large in thermal storage density, large in coefficient of thermal conductivity, high in compressive strength, high in thermal shock resistance, low in production cost, simple in process and the like.

Description

technical field

[0001] The invention belongs to the technical field of ceramic materials, and in particular relates to a 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 performance of t...

Examples

Embodiment 1

[0032] 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.

[0033] In the second step, mix 50wt% sieving material A, 30wt% carbon black, and 20wt% aluminum oxalate according to the proportion, heat treatment at 300°C for 1 hour, grind and sieve to obtain grinding material B with a particle size of less than 0.045mm .

[0034] In the third step, 20wt% of corundum particles, 30wt% of corundum powder, 15wt% of abrasive B, 30wt% of aluminum-silicon alloy, and 5wt% of thermosetting phenolic resin are mixed evenly in proportion, pressed and molded at 100MPa, and placed in 1000 ℃ heat treatment for 3 hours to obtain the phase change heat storage material.

[0035] The performance of the phase change heat storage mat...

Embodiment 2

[0037] 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.

[0038] In the second step, mix 60wt% of sieving material A, 30wt% of carbon black, and 10wt% of aluminum oxalate in proportion, heat treatment at 200°C for 2 hours, grind and sieve to obtain grinding material B with a particle size of less than 0.045mm .

[0039] The third step is to mix 30wt% of corundum particles, 10wt% of corundum powder, 10wt% of grinding material B, 40wt% of aluminum-silicon alloy, and 10wt% of thermosetting phenolic resin according to the proportion, press molding at 80MPa, and place in 1200 ℃ heat treatment for 2 hours to obtain the phase change heat storage material.

[0040] The performance of the phase change heat stor...

Embodiment 3

[0042] 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.

[0043] In the second step, mix 65wt% of sieving material A, 20wt% of carbon black, and 15wt% of aluminum oxalate according to the proportion, heat treatment at 150°C for 3 hours, grind and sieve to obtain grinding material B with a particle size of less than 0.045mm .

[0044] The third step is to mix 40wt% of corundum particles, 20wt% of corundum powder, 19wt% of grinding material B, 20wt% of aluminum-silicon alloy, and 1wt% of thermosetting phenolic resin according to the proportion, press molding at 60MPa, and place at 1100 ℃ heat treatment for 1 hour to obtain the phase change heat storage material.

[0045] The performance of the phase cha...

technical field

[0001] The invention belongs to the technical field of ceramic materials, and in particular relates to a 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 performance of t...

Examples

Embodiment 1

[0032] 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.

[0033] In the second step, mix 50wt% sieving material A, 30wt% carbon black, and 20wt% aluminum oxalate according to the proportion, heat treatment at 300°C for 1 hour, grind and sieve to obtain grinding material B with a particle size of less than 0.045mm .

[0034] In the third step, 20wt% of corundum particles, 30wt% of corundum powder, 15wt% of abrasive B, 30wt% of aluminum-silicon alloy, and 5wt% of thermosetting phenolic resin are mixed evenly in proportion, pressed and molded at 100MPa, and placed in 1000 ℃ heat treatment for 3 hours to obtain the phase change heat storage material.

[0035] The performance of the phase change heat storage mat...

Embodiment 2

[0037] 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.

[0038] In the second step, mix 60wt% of sieving material A, 30wt% of carbon black, and 10wt% of aluminum oxalate in proportion, heat treatment at 200°C for 2 hours, grind and sieve to obtain grinding material B with a particle size of less than 0.045mm .

[0039] The third step is to mix 30wt% of corundum particles, 10wt% of corundum powder, 10wt% of grinding material B, 40wt% of aluminum-silicon alloy, and 10wt% of thermosetting phenolic resin according to the proportion, press molding at 80MPa, and place in 1200 ℃ heat treatment for 2 hours to obtain the phase change heat storage material.

[0040] The performance of the phase change heat stor...

Embodiment 3

[0042] 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.

[0043] In the second step, mix 65wt% of sieving material A, 20wt% of carbon black, and 15wt% of aluminum oxalate according to the proportion, heat treatment at 150°C for 3 hours, grind and sieve to obtain grinding material B with a particle size of less than 0.045mm .

[0044] The third step is to mix 40wt% of corundum particles, 20wt% of corundum powder, 19wt% of grinding material B, 20wt% of aluminum-silicon alloy, and 1wt% of thermosetting phenolic resin according to the proportion, press molding at 60MPa, and place at 1100 ℃ heat treatment for 1 hour to obtain the phase change heat storage material.

[0045] The performance of the phase cha...