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
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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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