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Nano-sized carbon black heat dissipating paint and preparation method thereof

A nano-carbon black and heat-dissipating coating technology, used in epoxy resin coatings, polyurea/polyurethane coatings, coatings, etc., can solve problems such as serious environmental pollution and high toxicity, and achieve good adhesion performance, low price, and high price. low cost effect

Inactive Publication Date: 2011-11-23
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these oxides or nitrides have higher thermal conductivity, they are generally more expensive
At the same time, the prepared coating contains various organic solvents, which have the disadvantages of high toxicity and serious environmental pollution.

Method used

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  • Nano-sized carbon black heat dissipating paint and preparation method thereof
  • Nano-sized carbon black heat dissipating paint and preparation method thereof
  • Nano-sized carbon black heat dissipating paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] First mix 30 g of water-based silicone resin (H-900) and 30 g of water to form a mixed solution. Then take 3 g of nano carbon black powder (particle size 15 nm) in the mixed solution, stir for 1 minute, add nano carbon black dispersant (TAZ-CNT1), water-based leveling agent (BD-3033) and 0.5 g each of water-based defoamer (BD-304) in this mixed solution. Finally, the mixed solution is placed in a ball mill for grinding to obtain the nano carbon black heat dissipation paint of the present invention, wherein the grinding speed is 400 r / min and the grinding time is 6 hours. Pour out the ground paint and seal it for later use.

[0034] testing method:

[0035] Prepare two aluminum sheets with the size of 7.5 cm×7.5 cm×0.2 cm, one of which is the control group, and its surface is not coated with heat dissipation paint; the other is the experimental group, whose surface is coated with the heat dissipation paint prepared in the examples . Apply thermal paste to the bottom of th...

Embodiment 2

[0037] First mix 40 g of water-based epoxy resin (E44) and 35 g of ethanol to form a mixed solution. Then take 6 g of nano carbon black powder (particle size 15 nm) in the mixed solution, stir for 1 minute, add 1.5 g of nano carbon black dispersant (TAZ-CNT1), water-based leveling agent (BD-3033) ) And 1.0 g of water-based defoamer (BD-304) in the mixed solution. Finally, the mixed solution is placed in a ball mill for grinding to obtain the nano carbon black heat dissipation paint of the present invention, wherein the grinding speed is 500 r / min and the grinding time is 5 hours. Pour out the ball-milled paint and store it for later use.

[0038] testing method:

[0039] Prepare two aluminum sheets with a size of 7.5cm×7.5cm×0.2cm, one of which is the control group, and its surface is not coated with heat dissipation paint; the other is the experimental group, whose surface is coated with the heat dissipation paint prepared in the examples. Place the two aluminum plates on the 9...

Embodiment 3

[0041] First mix 50 g of water-based polyurethane resin (CS1600) and 40 g of water to form a mixed solution. Then take 9 g of nano carbon black powder (particle size 18 nm) in the mixed solution, stir for 1 minute, add 2.5 g of nano carbon black dispersant (TAZ-CNT1), water-based leveling agent (BD-3033) ) And water-based defoamer (BD-304) 1.5 g each in the mixed solution. Finally, the mixed solution is placed in a ball mill for grinding to obtain the nano carbon black heat dissipation paint of the present invention, wherein the grinding speed is 600 r / min and the grinding time is 4 hours. Pour out the ball-milled paint and store it for later use.

[0042] According to the method described in Example 1 and Example 2, it can be seen that the coating prepared in this example also has similar heating and cooling trends as in Example 1 and Example 2, indicating that the nano carbon black heat dissipation coating of the present invention Has good heat dissipation effect.

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Abstract

The invention relates to a nano-sized carbon black heat dissipating paint and a preparation method thereof. The paint is composed of waterborne resin, nano-sized carbon black, a dispersant of nano-sized carbon black, a waterborne leveling agent, a waterborne anti-foaming agent, and a solvent. The materials are sufficiently mixed through ball-milling, such that the heat dissipating paint is prepared. The heat dissipating paint comprises components of, by mass: 30 to 60 parts of waterborne resin, 3 to 15 parts of nano-sized carbon black, 0.5 to 2.5 parts of the dispersant of nano-sized carbon black, 0.5 to 1.5 parts of the waterborne leveling agent, 0.5 to 1.5 parts of the waterborne anti-foaming agent, and 30 to 40 parts of the solvent. The heat dissipating paint can be directly painted on heat dissipating apparatuses for increasing the heat dissipating areas of the apparatuses and improving the heat dissipating effects. The nano-sized carbon black heat dissipating paint has characteristics of highly efficient, convenient and environment friendly.

Description

technical field [0001] The invention relates to a heat dissipation coating, in particular to a coating which can be coated on the outside of a heat dissipation device to enhance the heat dissipation effect. Background technique [0002] The rapid development of modern science and technology of materials and metals has made the design and production of instruments, equipment, and components develop in the direction of miniaturization, light weight, compactness, and high efficiency. The development of VLSI has also made the high power density of electronic devices It is becoming more and more obvious that the resulting large amount of heat will directly affect the working stability and complete reliability of electronic devices. However, the cooling capacity achieved by conventional cooling systems is greatly challenged, especially in the fields of energy, automobiles, air conditioning, agriculture, chemicals, heating, aerospace, microelectronics, information, etc. put forwar...

Claims

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Application Information

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IPC IPC(8): C09D183/04C09D163/00C09D163/02C09D175/04C09D7/12
Inventor 江国华王日精王小红闫永杰
Owner ZHEJIANG SCI-TECH UNIV
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