A kind of heat storage magnetic material with shell structure and its preparation method

A magnetic material and heat storage technology, which is applied in the direction of magnetic materials, heat exchange materials, magnetic objects, etc., can solve the problems of affecting safety, limiting the use range of thermal effects, and restricting the promotion of use, so as to achieve the effect of efficient heat storage

Active Publication Date: 2019-11-08
COLLEGE OF SCI & TECH NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Electronic equipment is widely used, but its thermal effect and electromagnetic radiation seriously limit its scope of use, affect its safety, and severely restrict its promotion and use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] This embodiment provides a heat storage magnetic material with a shell structure, including a core, a heat storage inner layer and a magnetic outer layer. The shape of the core is spherical, and the heat storage inner layer is coated on the outer layer of the core. The magnetic The outer layer covers the outer layer of the heat storage inner layer.

[0025] Specifically, the method for preparing a heat storage magnetic material with a shell structure includes synthesizing a core and synthesizing a heat storage magnetic material.

[0026] Synthetic core comprises the following steps:

[0027] ① Prepare the oil phase mixture: mix n-octadecane, methyl methacrylate, methacrylic acid and benzoyl peroxide to form an oil phase mixture;

[0028] ②Methyl methacrylate monomers and methacrylic acid monomers start to polymerize under nitrogen atmosphere and 85°C to form methyl methacrylate-methacrylic acid polymers;

[0029] ③ Add K to the oil phase mixture 2 S 2 o 8 The aqueo...

Embodiment 2

[0040] This embodiment provides a heat storage magnetic material with a shell structure, including a core, a heat storage inner layer and a magnetic outer layer. The shape of the core is spherical, and the heat storage inner layer is coated on the outer layer of the core. The magnetic The outer layer covers the outer layer of the heat storage inner layer.

[0041] Specifically, the method for preparing a heat storage magnetic material with a shell structure includes synthesizing a core and synthesizing a heat storage magnetic material.

[0042] Synthetic core comprises the following steps:

[0043] ① Prepare the water phase mixture: Dissolve 0.125g of sodium lauryl sulfate as a dispersant in distilled water to form a water phase mixture;

[0044] ② Prepare the oil phase mixture: mix n-octadecane, methyl methacrylate, methacrylic acid and benzoyl peroxide to form an oil phase mixture;

[0045] ③The oil phase mixture and the water phase mixture are heated, mixed and stirred to...

Embodiment 3

[0056] This embodiment provides a heat storage magnetic material with a shell structure, including a core, a heat storage inner layer and a magnetic outer layer. The shape of the core is spherical, and the heat storage inner layer is coated on the outer layer of the core. The magnetic The outer layer covers the outer layer of the heat storage inner layer.

[0057] Specifically, the method for preparing a heat storage magnetic material with a shell structure includes synthesizing a core and synthesizing a heat storage magnetic material.

[0058] Synthetic core comprises the following steps:

[0059] ① Prepare the water phase mixture: Dissolve 0.25g of sodium lauryl sulfate as a dispersant in distilled water to form a water phase mixture;

[0060] ② Prepare the oil phase mixture: mix n-octadecane, methyl methacrylate, methacrylic acid and benzoyl peroxide to form an oil phase mixture;

[0061] ③The oil phase mixture and the water phase mixture are heated, mixed and stirred to ...

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PUM

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Abstract

The invention relates to a shell-structure heat storage magnetic material and a preparation method thereof. The shell-structure heat storage magnetic material comprises a core body, a heat storage inner layer and a magnetic outer layer, wherein the core body is in a spherical shape, the heat storage inner layer wraps an outer layer of the core body, the magnetic outer layer wraps an outer layer ofthe heat storage inner layer, the material of the core body is n-octadecane, the material of the heat storage inner layer is a methyl methacrylate-methacrylic acid polymer, and the material of the magnetic outer layer is ferrosoferric oxide. High-efficiency heat storage is achieved by employing the n-octadecane and the methyl methacrylate-methacrylic acid polymer, the ferrosoferric oxide is synthesized on a surface of the methyl methacrylate-methacrylic acid polymer to form integration of heat storage and magnetic effect, the saturation magnetic intensity of the synthesized heat storage magnetic material is 12.5 emu.g<-1>, and the enthalpy can reach 152.2 J.g<-1>.

Description

technical field [0001] The invention relates to a heat storage magnetic material with a shell structure and a preparation method thereof. Background technique [0002] Electronic equipment is widely used, but its thermal effect and electromagnetic radiation seriously limit its application range, affect its safety, and severely restrict its popularization and use. Contents of the invention [0003] The object of the present invention is to overcome the above-mentioned deficiencies in the prior art, and provide a heat storage magnetic material with a great heat storage function and a shell-like structure forming stable electromagnetic shielding and a preparation method thereof. [0004] The technical solution provided by the present invention is: a heat storage magnetic material with a shell structure, characterized in that it includes a core, a heat storage inner layer and a magnetic outer layer, the shape of the core is spherical, and the heat storage inner layer is coated...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F1/00H01F1/03H01F41/00C08F220/14C08F220/04C09K5/06H05K9/00
CPCC08F220/14C09K5/063H01F1/00H01F1/0315H01F41/00H05K9/0081C08F220/04
Inventor 诸跃进庄学恒张英张京
Owner COLLEGE OF SCI & TECH NINGBO UNIV
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