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Composite intensified heat dissipation coating containing graphene or graphene oxide and preparation method of coating

A heat-dissipating coating and graphene technology, applied in polyester coatings, coatings, etc., can solve the problem of high thermal conductivity, and achieve the effects of large specific surface area, good film formation and high thermal conductivity

Active Publication Date: 2013-03-13
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Patent CN 101353553A (2009) provides a heat-dissipating coating and its preparation method. The material uses zinc oxide, silicon carbide and aluminum powder as fillers for the heat-dissipating coating. It has good flame retardancy and high thermal conductivity; the method of use is simple and can be directly Coating on the heat sink makes the surface of the heat sink form an irregular concave-convex surface, increases the heat dissipation area of ​​the heat sink, and improves the heat dissipation effect, but when the diameter of the heat dissipation particles is small, the particles will be difficult to be uniform due to "clusters" dispersed in resin

Method used

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  • Composite intensified heat dissipation coating containing graphene or graphene oxide and preparation method of coating
  • Composite intensified heat dissipation coating containing graphene or graphene oxide and preparation method of coating
  • Composite intensified heat dissipation coating containing graphene or graphene oxide and preparation method of coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] 1. Weigh 20g of tourmaline and 64g of iron oxide (Fe 2 o 3 ), 12g of manganese oxide (MnO 2 ), 4g of cobalt oxide (Co 2 o 3 ), according to the mass ratio of material: ball: water = 1:3:1, put it into a ball mill tank (1 liter ball mill tank, the ball is zirconia with a diameter of 1 cm), and ball mill at a speed of 1100r / min for 1 hour;

[0050] 2. Put the ball-milled slurry into a Buchner funnel for suction filtration, dry and grind the obtained filter cake; put the ground mixture into a muffle furnace, heat-treat at 800°C for 3 hours, and then Cool the furnace to room temperature;

[0051] 3. Put the heat-treated mixture into a ball mill for 3 hours, dry and grind to obtain tourmaline-transition metal oxide composite powder (DF powder for short);

[0052] 4. Weigh 30g of DF powder and 2g of titanate coupling agent (NDZ-201, the same as other embodiments of the present invention) into a 1000ml round bottom flask, add toluene until the flask is submerged in DF pow...

Embodiment 2

[0057] 1. Weigh 20g of tourmaline and 64g of iron oxide (Fe 2 o 3 ), 12g of manganese oxide (MnO 2 ), 4g of cobalt oxide (Co 2 o 3 ), according to the mass ratio of material: ball: water = 1:3:1, put it into the ball mill tank, and ball mill at a speed of 1100r / min for 1 hour;

[0058] 2. Put the ball-milled slurry into a Buchner funnel for suction filtration, dry and grind the obtained filter cake; put the ground mixture into a muffle furnace, heat-treat at 800°C for 3 hours, and then Cool the furnace to room temperature;

[0059] 3. Put the heat-treated mixture into a ball mill for 3 hours, dry and grind to obtain tourmaline-transition metal oxide composite powder (DF powder for short);

[0060] 4. Weigh 30g of DF powder and 2g of titanate coupling agent into a 1000ml round bottom flask, add toluene until the flask is submerged in DF powder, put the flask into an electric heating mantle for reflux modification for 4 hours;

[0061] 5. Recover the toluene in the reactio...

Embodiment 3

[0065] Steps 1 to 3 are the same as in Embodiment 1, and then continue with the following steps:

[0066] 4. Weigh 3g of graphene oxide, add 30ml of deionized water to ultrasonically disperse to obtain graphite oxide suspension, add it into a round bottom flask, weigh 30g of DF powder into the round bottom flask, add ethanol until 1 / 3 of the flask is immersed in DF Put the flask into the electric heating mantle to reflux for 3 hours, so that the graphene oxide is wrapped on the DF powder, filter, dry, and grind to obtain the DF powder (referred to as GODF powder) coated with graphene oxide on the surface;

[0067] 5. Weigh 30g of GODF powder and 2g of titanate coupling agent into a 1000ml round bottom flask, add toluene until the flask is submerged in GODF powder, put the flask into an electric heating mantle for reflux modification for 4 hours;

[0068] 6. Recover the toluene in the reaction solution with a rotary evaporator;

[0069] 7. Take out the modified filler, dry, di...

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Abstract

The invention discloses a composite intensified heat dissipation coating containing graphene or graphene oxide and a preparation method of the coating. The performances of the coating are combined with the performances of infrared ray radiation of tourmaline and transition metal oxide, larger specific surface areas and high thermal conductivity coefficients of the graphene and the graphene oxide, excellent adhesive property of resin, high strength and excellent high-temperature resistance. The functional powder and the graphene or the graphene oxide are dispersed in the resin under the synergistic effect of various auxiliaries so as to prepare the composite intensified heat dissipation coating. In the preparation method, the graphene or the graphene oxide wraps the surface of the infrared emission powder by a reflux method; based on the higher thermal conductivity coefficient of the graphene or the graphene oxide, the thermal resistance of infrared particles can be lowered effectively and the infrared emissivity of the infrared particles is improved; in comparative test with the normal heat dissipation coating, the infrared emissivity of the coating provided by the invention can be 0.96 and is improved by 6.6%, 6.37% of energy is saved, and better energy-saving effect is realized.

Description

technical field [0001] The invention relates to a heat dissipation coating, in particular to a method for preparing a composite enhanced heat dissipation coating containing graphene or graphene oxide and its application. Background technique [0002] The energy problem is a major problem facing society today. All countries in the world are looking for new energy and energy-saving ways, and environmental protection and energy conservation are the top priority. Building energy consumption accounts for a large proportion of energy consumption, 30% to 40% in developed countries, and more than 25% in my country. [0003] Heat energy is currently the most widely used energy source, and almost all production and living activities are directly or indirectly related to the generation, transmission, utilization, and dissipation of heat energy. The generation of heat energy mainly depends on various equipment for obtaining heat energy, including kilns, boilers, ovens, electric heaters...

Claims

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Application Information

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IPC IPC(8): C09D167/08C09D5/00C09D7/12
Inventor 薛刚梁金生张学亮苑砚坤王赛飞
Owner HEBEI UNIV OF TECH
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