Graphene-containing heat-dissipating coating and preparation method thereof
A heat-dissipating coating and graphene technology, applied in the field of coatings, can solve the problems of low infrared radiation rate, poor heat transfer performance, poor heat dissipation, etc., achieve high heat transfer performance, good heat transfer performance, and increase the space infrared radiation area Effect
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[0033] Based on the above-mentioned graphene heat-dissipating paint, the present invention also provides a preparation method of a graphene heat-dissipating paint, wherein, such as figure 1 shown, including the following steps:
[0034] S1, uniformly mix the resin, graphene, functional filler, dispersant, leveling agent, colorant and solvent according to a predetermined ratio to obtain a mixed slurry;
[0035] S2, adding zirconium beads to the mixed slurry according to the ratio of the mass ratio of the balls to the material of 1:1, and performing ball milling on the mixed slurry in a planetary sand mill at a predetermined rotational speed to obtain a graphene heat-dissipating coating . Preferably, the rotational speed of the ball milling treatment is 40-600 rpm, and the time is 100-150 min.
Example Embodiment
[0037] Example 1
[0038] Graphene heat dissipation coating includes: 6g N-type high-purity graphene (average number of layers 4 layers, sheet diameter 5μm, thickness 2.86nm), 2g functional graphene, 3.5g spherical alumina powder (particle size 50nm), 4g carbon fiber (tube Diameter 5-20nm, average tube length 3-15μm), 5.5g of carbon black, 35g of water-based silicone modified acrylic resin, 2g of acrylate polymer dispersant, 1.5g of leveling agent, 12g of amino resin, 2.5 g of propylene glycol methyl ether, 17 g of isobutanol, and 9 g of water.
[0039] The preparation method of the graphene heat dissipation coating comprises the following steps:
[0040] 1. Weigh 6g N-type high-purity graphene powder (average number of layers 4 layers, sheet diameter 5μm, thickness 2.86nm), 2g functional graphene, 3.5g spherical alumina powder (particle size 50nm), 4g carbon fiber (pipe diameter 50nm), respectively. 5-20nm, average tube length 3-15μm), 35g silicone acrylic resin, 2g acrylate ...
Example
[0045] Example 2
[0046] Graphene heat dissipation coating includes: 4g N-type high-purity graphene (average number of layers 5 layers, sheet diameter 10μm, thickness 3nm), 4g functional graphene, 6g aluminum nitride powder, 1g carbon fiber (pipe diameter 5-20nm, average pipe Length 3-15μm), 2g alumina fiber, 8g orange pearl powder, 48g water-based acrylic resin, 3g dispersant, 2g leveling agent, 0.1g defoamer, 5.9g industrial ethanol, 16g water
[0047] The preparation method of the graphene heat dissipation coating comprises the following steps:
[0048] 1. Weigh 4g N-type high-purity graphene (average number of layers 5 layers, sheet diameter 10μm, thickness 4nm), 4g functional graphene, 5.9g industrial ethanol, 16g water and 2g acrylate polymer dispersant and stir In the dispersion plate; adjust the speed of the mixer to 1300rpm / min, and the time is 24 hours, and then the composite graphene dispersion can be obtained;
[0049] 2. To (1), add 6g aluminum nitride powder (...
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