A kind of heat dissipation coating and preparation method thereof

A technology for heat-dissipating coatings and oxides, used in anti-corrosion coatings, fire-resistant coatings, coatings, etc., to achieve the effect of increasing heat conduction channels, good mechanical properties, and high-density capillary phenomenon

Active Publication Date: 2022-07-05
东莞市安宿泰电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 wavelengths of infrared rays. Heat-dissipating coatings that emit infrared radiation efficiency close to black bodies can also absorb electromagnetic waves from the outside world, so they are not suitable for products that only need to implement heat dissipation solutions in a specific temperature range

Method used

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  • A kind of heat dissipation coating and preparation method thereof
  • A kind of heat dissipation coating and preparation method thereof
  • A kind of heat dissipation coating and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0057] The present embodiment provides a heat dissipation paint, which specifically includes the following steps:

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

[0059]S2. Preparation of ferrite-wrapped metal oxide nano-ceramic powder: 10 g of the metal oxide composite nano-ceramic powder prepared in step S1 was uniformly dispersed in 50 g of an aqueous solution containing polyvinyl alcohol, and the content of polyvinyl alcohol was 2wt%, A suspension is obtained, heated to 40° C., and a solution of ferrous sulfate solution and ammonium bicarbonate is prepared. 50g ferrous sulfate solution was direc...

Embodiment 2

[0064] The present embodiment provides a heat dissipation paint, which specifically includes the following steps:

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

[0066] S2. Preparation of ferrite-wrapped metal oxide nano-ceramic powder: 10 g of the metal oxide composite nano-ceramic powder prepared in step S1 was uniformly dispersed in 50 g of an aqueous solution containing polyvinyl alcohol, and the content of polyvinyl alcohol was 7wt%, A suspension is obtained, heated to 50° C., and a solution of ferrous sulfate solution and ammonium bicarbonate is prepared. 50g ferrous sulfate solution w...

Embodiment 3

[0071] The present embodiment provides a heat dissipation paint, which specifically includes the following steps:

[0072] S1. Preparation of metal oxide composite nano-ceramic powder: Dissolve 1g of titanium nitrate, 2g of aluminum nitrate, and 3g of copper nitrate in 100g of water, add 20g of 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, form a dry gel, take out, ignite the dry gel, grind it finely, and obtain the metal oxide composite nano-ceramic powder;

[0073] S2. Preparation of ferrite-wrapped metal oxide nano-ceramic powder: 10 g of the metal oxide composite nano-ceramic powder prepared in step S1 is uniformly dispersed in 50 g of an aqueous solution containing polyvinyl alcohol, and the content of polyvinyl alcohol is 5wt%, A suspension is obtained, heated to 45° C., and a solution of ferrous sulfate solution and ammonium bicarbonate is prepared. 50g ferrous sulfate solution was direc...

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Abstract

The invention provides a heat dissipation coating and a preparation method thereof, belonging to the technical field of coatings. React titanium nitrate, aluminum nitrate, copper nitrate with a complexing agent to form a sol, heat to form a dry gel, ignite to obtain metal oxide composite nano-ceramic powder, and react with ferrous sulfate and ammonium bicarbonate to obtain ferrite-coated metal Oxide nano-ceramic powder, under the catalysis of Tris-HCl solution containing Co ions, react with dopamine hydrochloride to obtain polydopamine-coated ceramic powder microspheres, modified carbon nanotubes with silane coupling agent, silicone modified acrylic acid The resin, the urea-formaldehyde resin, the dispersant and the auxiliary agent are evenly mixed to obtain a heat dissipation coating. The heat-dissipating paint prepared by the invention has good mechanical properties, good heat resistance, weather resistance, chemical corrosion resistance, good flexibility and elasticity, good film-forming property, self-heating and far-infrared releasing effects, and has broad application prospects.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a heat dissipation 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 electronic industry. With the three development trends of high performance, miniaturization and integration in the electronic 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 increase of light emitting diode (LED) power, especially in some special and harsh environments, such as the heat dissipation problem of high-power LED lamps used in underwater closed environments. It is an urgent problem to find a better way to dissipate heat. [0003] In thermodynamics, heat dissipation is heat transfer, and there are three...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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