Heat dissipation coating and preparation method thereof

A technology for heat-dissipating coatings and metals, applied in anti-corrosion coatings, fire-retardant coatings, coatings, etc., to achieve the effects of good heat resistance, enhanced adhesion, and good mechanical properties

Active Publication Date: 2022-03-22
东莞市安宿泰电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, theoretically, infrared rays (electromagnetic waves) radiated from heat-generating items do not emit a constant amount of energy at all wavelengths, but have an energy density distribution that depends on wavelengths that are determined by temperature and are expressed at all wavelengt

Method used

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  • Heat dissipation coating and preparation method thereof
  • Heat dissipation coating and preparation method thereof

Examples

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Embodiment 1

[0057] The present embodiment provides a heat-dissipating paint, specifically comprising the following steps:

[0058] S1. Preparation of metal oxide composite nano-ceramic powder: Dissolve 1g titanium nitrate, 1g aluminum nitrate, and 2g copper nitrate in 100g water, add 15g citric acid, heat to 60°C, evaporate the solvent for 2 hours to obtain a sol; then increase to 150 ℃, reduce the pressure to 0.01MPa to form xerogel, take it out, ignite the xerogel, and grind it finely to obtain metal oxide composite nano-ceramic powder;

[0059]S2. Preparation of ferrite-coated metal oxide nano-ceramic powder: uniformly disperse 10 g of the metal oxide composite nano-ceramic powder prepared in step S1 in 50 g of an aqueous solution containing polyvinyl alcohol, the content of which is 2 wt%. Obtain suspension, be heated to 40 ℃, configure the solution of ferrous sulfate solution and ammonium bicarbonate, the content of ferrous sulfate in ferrous sulfate solution is 15wt%, and the conten...

Embodiment 2

[0064] The present embodiment provides a heat-dissipating paint, specifically comprising the following steps:

[0065] S1. Preparation of metal oxide composite nano-ceramic powder: dissolve 1g titanium nitrate, 3g aluminum nitrate, 4g copper nitrate in 100g water, add 25g sodium citrate, heat to 80°C, evaporate the solvent for 4h to obtain a sol; then increase to 170°C, reduce the pressure to 0.1MPa to form a xerogel, take it out, ignite the xerogel, and grind it finely to obtain metal oxide composite nano-ceramic powder;

[0066] S2. Preparation of ferrite-coated metal oxide nano-ceramic powder: uniformly disperse 10 g of the metal oxide composite nano-ceramic powder prepared in step S1 in 50 g of an aqueous solution containing polyvinyl alcohol, the content of which is 7 wt%. Obtain suspension, be heated to 50 ℃, configure the solution of ferrous sulfate solution and ammonium bicarbonate, the content of ferrous sulfate in the ferrous sulfate solution is 20wt%, the content of...

Embodiment 3

[0071] The present embodiment provides a heat-dissipating paint, specifically comprising the following steps:

[0072] S1. Preparation of metal oxide composite nano-ceramic powder: Dissolve 1g titanium nitrate, 2g aluminum nitrate, and 3g copper nitrate in 100g water, add 20g citric acid, heat to 70°C, evaporate the solvent for 3h to obtain a sol; then increase to 160 ℃, reduce the pressure to 0.05MPa to form xerogel, take it out, ignite the xerogel, and grind it finely to obtain metal oxide composite nano-ceramic powder;

[0073] S2. Preparation of ferrite-coated metal oxide nano-ceramic powder: uniformly disperse 10 g of the metal oxide composite nano-ceramic powder prepared in step S1 in 50 g of an aqueous solution containing polyvinyl alcohol, the content of which is 5 wt%. Obtain suspension, be heated to 45 ℃, configure the solution of ferrous sulfate solution and ammonium bicarbonate, the content of ferrous sulfate in ferrous sulfate solution is 17wt%, and the content of...

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Abstract

The invention provides a heat dissipation coating and a preparation method thereof, and belongs to the technical field of coatings. The preparation method comprises the following steps: reacting titanium nitrate, aluminum nitrate and copper nitrate with a complexing agent to form sol, heating to form xerogel, igniting to obtain metal oxide composite nano ceramic powder, reacting with ferrous sulfate and ammonium bicarbonate to obtain iron oxide coated metal oxide nano ceramic powder, and reacting with dopamine hydrochloride under the catalysis of a Tris-HCl solution containing Co ions to obtain the iron oxide coated metal oxide nano ceramic powder. And uniformly mixing the polydopamine-coated ceramic powder microspheres with silane coupling agent modified carbon nanotubes, organic silicon modified acrylic resin, urea resin, a dispersing agent and an auxiliary agent to obtain the heat dissipation coating. The heat dissipation coating prepared by the invention has the advantages of favorable mechanical properties, favorable heat resistance, favorable weather resistance, favorable chemical corrosion resistance, favorable flexibility, favorable elasticity and favorable film-forming property, has the functions of self-heat dissipation and far infrared release, and has wide application prospects.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a heat-dissipating coating and a preparation method thereof. Background technique [0002] The heat dissipation problem of electronic equipment is related to the reliability and life of electronic equipment. It is a bottleneck affecting the development of today's electronics industry. With the three major development trends of high performance, miniaturization and integration in the electronics industry, the heat dissipation problem is becoming more and more prominent. . In addition, heat dissipation is also one of the main factors that limit the power increase of light-emitting diodes (LEDs), especially in some special and harsh environments, such as the heat dissipation problem of high-power LED lamps used in underwater closed environments is particularly prominent. Research on high-power LED lamps Finding a better way to dissipate heat is an urgent problem to be solved. [...

Claims

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Application Information

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IPC IPC(8): C09D133/00C09D161/24C09D7/62C09D5/08
CPCC09D133/00C09D7/62C09D5/18C09D5/08C08K2003/2272C08K2003/2227C08K2003/2248C08K2003/2241C08K2201/011C08L2201/08C08L61/24C08K9/06C08K3/041C08K9/10C08K3/22Y02P20/10
Inventor 孙海坤李想余庚
Owner 东莞市安宿泰电子科技有限公司
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