CN102250546A - Nano-sized carbon black heat dissipating paint and preparation method thereof - Google Patents

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

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Publication number
CN102250546A
CN102250546A CN2011102536768A CN201110253676A CN102250546A CN 102250546 A CN102250546 A CN 102250546A CN 2011102536768 A CN2011102536768 A CN 2011102536768A CN 201110253676 A CN201110253676 A CN 201110253676A CN 102250546 A CN102250546 A CN 102250546A
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carbon black
water
nano carbon
mass parts
heat radiation
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CN2011102536768A
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江国华
王日精
王小红
闫永杰
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Zhejiang University of Technology ZJUT
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Zhejiang University of Technology ZJUT
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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

A kind of nano carbon black heat radiation coating and preparation method thereof
Technical field
The present invention relates to a kind of heat radiation coating, especially relate to a kind of outer coating of heat abstractor of coating with the enhancing radiating effect.
Background technology
Material, metal rapid development of modern science and technology, make design, the production of instrument, equipment, parts develop towards miniaturization, lightweight, densification, high efficiency direction, the development of super large-scale integration makes that again the high power density feature of electron device is more and more obvious, and a large amount of heats of Chan Shenging will directly have influence on the job stability and the complete reliability of electron device therefrom.And the cooling power that conventional cooling system can reach is subjected to very big challenge, especially in fields such as the energy, automobile, air-conditioning, agricultural, chemical industry, heating, aerospace, microelectronics, information, technology such as enhancement of heat transfer, raising radiating efficiency are had higher requirement.
Heat transfer process relates to and uses heat sink or radiating element that the thermal load of materials such as electron device, heater block, hot-fluid is shifted rapidly, is in order to reduce self temperature of device work on the one hand. to keep comparatively stable working order; Be with heater block or fluidic transfer of heat on the other hand, so that efficiently utilize heat, as scatterer.In these heat transfer processes, thermal conduction or radiating efficiency often depend on the thermal conductivity of heat sink or radiating element.Use highly heat-conductive material can reduce the inside or the surface temperature of device significantly, thereby also can utilize heat efficiently, economically simultaneously as heat sink or radiating element. have important and practical meanings.Heat radiation coating is the coating that object heat and insulating water-proof are walked in a kind of radiation, coating is directly brushed and is being wanted the body surface of radiating and cooling, heat loss through radiation cooling coating can be walked heat on the brushed material body to the airspace autoemission with infrared wavelength, reduce body surface and internal temperature, radiating and cooling is obvious.The coating heat radiation is not influenced by surrounding medium, and the coating heat radiation can be used in vacuum environment, and coating also has the characteristics of good self-cleaning, insulativity, preservative property, water-repellancy, antiacid alkali, easy construction when playing radiation cooling.
At present, heat radiation filler commonly used mainly contains aluminium nitride, silicon nitride, aluminum oxide, beryllium oxide, magnesium oxide, silicon carbide and zinc oxide etc. in heat radiation coating.Though the thermal conductivity of these oxide compounds or nitride is higher, prevailing price is more expensive.Prepared coating contains various organic solvents simultaneously, has shortcomings such as toxicity is big, environmental pollution is serious.Therefore, seek in this area that a kind of to have a quick and easy heat radiation coating of cheap, environmental friendliness and preparation method very urgent.
Summary of the invention
The object of the present invention is to provide a kind of nano carbon black heat radiation coating and preparation method thereof, advantage such as it has, and good heat dissipation effect, cost of material are cheap, environmental friendliness and preparation method are quick and easy.
For achieving the above object, the present invention has fully utilized the advantage such as good gluing performance, high strength and excellent high temperature resistance, electrical insulation capability of the high heat conductance of nano carbon black and silicone resin.Nano carbon black is dispersed in the water-base resin under various auxiliary agent synergies, has prepared a kind of new environmentally friendly heat radiation coating.
The present invention realizes that the technical scheme that its purpose is taked is: nano carbon black heat radiation coating of the present invention comprises following component:
Water-base resin 30~60 mass parts;
Nano carbon black 3~15 mass parts;
Dispersion agent 0.5~2.5 mass parts of nano carbon black;
Water-based flow agent 0.5~1.5 mass parts;
Water-based defoamer 0.5~1.5 mass parts;
Solvent 30~40 mass parts;
Described solvent is water and/or ethanol.
Further, water-base resin of the present invention is waterborne organic silicon resin, aqueous epoxy resins or waterborne polyurethane resin.
Further, the particle diameter of nano carbon black of the present invention is less than 20 nm.
The method of nano carbon black heat radiation coating of the present invention is as follows:
Take by weighing the dispersion agent of nano carbon black of water-based flow agent, 0.5~2.5 mass parts of nano carbon black powder, 0.5~1.5 mass parts of solvent, 3~15 mass parts of water-base resin, 30~40 mass parts of 30~60 mass parts and the water-based defoamer of 0.5~1.5 mass parts, and thorough mixing obtains mixing solutions, and described solvent is water and/or ethanol; After place ball mill to carry out ball milling described mixing solutions, its grinding rate is that 400~600 r/min, milling time are 4~6 hours.
Compared with prior art, advantage of the present invention is:
(1) the present invention use high heat conductance nano carbon black as heat-conducting medium, have good heat dissipation effect, cheap characteristics.
(2) the present invention uses the film forming material of water-base resin as coating, has that the gluing performance is good, intensity is high and high thermal resistance, electrical insulation capability advantages of higher.
(3) the present invention uses water-base resin, and can make water, ethanol etc. is solvent, has low, the eco-friendly characteristics of price.
(4) the heat radiation coating of the present invention surface of directly coating heat abstractor can increase its area of dissipation, to promote radiating effect, has efficient, convenient, environmental protection characteristics.Nano carbon black heat radiation coating of the present invention can use simple common spraying method, will be by spray thing surface cleaning clean after, with spray gun charcoal blacking evenly is sprayed on body surface and gets final product.
(5) solvent of the present invention's use is water and/or ethanol, and it is fast that the product that spraying is good has drying rate, and bake out temperature is low, even also can dry at normal temperatures, has characteristic of low energy consumption.
(6) preparation method's of the present invention technology is simple, and the preparation condition gentleness is easy and simple to handle, less investment, and energy consumption is low, therefore, is easy to promote and industrialization.
Description of drawings
Fig. 1 is the aluminium flake (curve A) of uncoated heat radiation coating and the intensification change curve that has been coated with the heat radiation coating aluminium flake (curve B) in the embodiment of the invention 1.
Fig. 2 is the aluminium flake (curve A) of uncoated heat radiation coating and the cooling change curve that has been coated with the heat radiation coating aluminium flake (curve B) in the embodiment of the invention 2.
Fig. 3 is the intensification change curve of the heat radiation coating aluminium flake (curve B) in the heat radiation coating aluminium flake (curve A) in the coating embodiment of the invention 1 and the coating embodiment of the invention 4.
Fig. 4 is the cooling change curve of the heat radiation coating aluminium flake (curve B) in the heat radiation coating aluminium flake (curve A) in the coating embodiment of the invention 1 and the coating embodiment of the invention 4.
Embodiment
Below by concrete but and non-restrictive example the present invention exemplarily is elaborated.
In following examples, the nanoparticle dispersion agent TAZ-CNT 1 that the dispersion agent of nano carbon black selects for use sky, Nanjing capable novel material company limited to produce, its composition is a high molecular polymer; The water-based flow agent BD-3033 that the water-based flow agent selects for use Hangzhou Bao Erde organosilicon company limited to produce, its composition is polyether-modified organopolysiloxane; The water-based defoamer BD-304 that the water-based defoamer selects for use Hangzhou Bao Erde organosilicon company limited to produce, its composition is that a kind of O/W type contains high reactivity organo-siloxane emulsion.
Embodiment 1
Earlier the waterborne organic silicon resin (H-900) of 30 g and the water of 30 g are mixed to form mixing solutions.The nano carbon black powder (particle diameter is 15 nm) of getting 3 g afterwards is in this mixing solutions, stir after 1 minute, each 0.5 g of dispersion agent (TAZ-CNT1), water-based flow agent (BD-3033) and water-based defoamer (BD-304) that adds nano carbon black is in this mixing solutions.This mixing solutions places ball mill to grind and obtains nano carbon black heat radiation coating of the present invention at last, and wherein grinding rate is that 400 r/min, milling time are 6 hours.Pouring out ground coating seals up for safekeeping stand-by.
Testing method:
Prepare two aluminium flakes of two 7.5 cm * 7.5 cm * 0.2 cm specifications, wherein one is control group, its surperficial uncoated heat radiation coating; Another piece is an experimental group, the preparation-obtained heat radiation coating of its surface coated embodiment.Heat-conducting cream is smeared in the wick bottom of the LED lamp of two 5 the same W, be separately fixed at these two blocks above the aluminium sheet.Connect direct supply, the power of two LED lamps is transferred to the same, utilize temperature measurer that the wick of two LED lamps is measured temperature contrast under the different aluminium sheet situation of thermograph.Through experiment test as can be known, after the LED lamp of 5W is fixed on the aluminium flake still with same power work, and the aluminium flake back side has the temperature of the LED lamp on the aluminium flake of nanometer heat radiation coating of spray present embodiment lower than the temperature of the LED lamp on the aluminium flake that does not spray the nanometer heat sink material, and the temperature maximum difference can reach 18 ℃ (Fig. 1).Illustrate that thus nano carbon black heat radiation coating of the present invention has better heat radiating effect.
Embodiment 2
Earlier the aqueous epoxy resins (E44) of 40 g and the ethanol of 35 g are mixed to form mixing solutions.The nano carbon black powder (particle diameter is 15 nm) of getting 6 g afterwards is in this mixing solutions, stir after 1 minute, each 1.0 g of dispersion agent (TAZ-CNT1) 1.5 g, water-based flow agent (BD-3033) and water-based defoamer (BD-304) that add nano carbon black are in this mixing solutions.This mixing solutions places ball mill to grind and obtains nano carbon black heat radiation coating of the present invention at last, and wherein grinding rate is that 500 r/min, milling time are 5 hours.Good coating is sealed up for safekeeping stand-by to pour out ball milling.
Testing method:
Prepare two aluminium flakes of two 7.5cm * 7.5cm * 0.2cm specifications, wherein one is control group, its surperficial uncoated heat radiation coating; Another piece is an experimental group, the heat radiation coating that its surface coated embodiment prepares.Two aluminium flakes were placed on 95 ℃ of temperature of heating plate balances after 30 minutes, temp.-sensing wire is fixed in the aluminium flake center, remove hot-plate, the temperature of utilizing temperature measurer to write down different aluminium sheets descends and changes.As shown in Figure 2, it is about 17.9 minutes that the aluminium flake of the heat radiation coating of coating embodiment is cooled to half used time of starting temperature, and the aluminium flake of uncoated heat radiation coating is cooled to about 36.5 minutes of the used time of a half of starting temperature, and both can reach 19.4 at temperature difference maximum oC, this illustrates that also nano carbon black heat radiation coating of the present invention has better heat radiating effect.
Embodiment 3
Earlier the waterborne polyurethane resin (CS1600) of 50 g and the water of 40 g are mixed to form mixing solutions.The nano carbon black powder (particle diameter is 18 nm) of getting 9 g afterwards is in this mixing solutions, stir after 1 minute, each 1.5 g of dispersion agent (TAZ-CNT1) 2.5 g, water-based flow agent (BD-3033) and water-based defoamer (BD-304) that add nano carbon black are in this mixing solutions.This mixing solutions places ball mill to grind and obtains nano carbon black heat radiation coating of the present invention at last, and wherein grinding rate is that 600 r/min, milling time are 4 hours.Good coating is sealed up for safekeeping stand-by to pour out ball milling.
Test as can be known by the method that embodiment 1 and embodiment 2 are put down in writing, the coating that present embodiment prepares also has embodiment 1 and embodiment 2 similar intensification and cooling variation tendency, illustrates that nano carbon black heat radiation coating of the present invention has better heat radiating effect.
Embodiment 4
Earlier the waterborne organic silicon resin (H-900) of 60 g and the mixed solvent of 35 g are mixed with the formation mixing solutions, wherein, mixed solvent is the mixture of the water of the ethanol of 20 g and 15 g.The nano carbon black powder (particle diameter is 25 nm) of getting 12 g afterwards is in this mixing solutions, stir after 1 minute, each 1.5 g of dispersion agent (TAZ-CNT1) 2.5 g, water-based flow agent (BD-3033) and water-based defoamer (BD-304) that add nano carbon black are in this mixing solutions.This mixing solutions places ball mill to grind and obtains nano carbon black heat radiation coating of the present invention at last, and wherein grinding rate is that 400 r/min, milling time are 6 hours.Good coating is sealed up for safekeeping stand-by to pour out ball milling.
Test as can be known by the method that embodiment 1 and embodiment 2 are put down in writing, the coating that present embodiment prepares also has embodiment 1 and embodiment 2 similar intensification and cooling variation tendency.Illustrate that nano carbon black heat radiation coating of the present invention has better heat radiating effect.By Fig. 3 and Fig. 4 as can be known, the radiating effect of the aluminium sheet of the heat radiation coating of coating embodiment 1 is better than the radiating effect of the aluminium sheet of the heat radiation coating of coating embodiment 4.
Embodiment 5
Earlier the aqueous epoxy resins (E44) of 50 g and the mixed solvent of 30 g are mixed with the formation mixing solutions, wherein, mixed solvent is the mixture of the water of the ethanol of 10 g and 20 g.The nano carbon black powder (particle diameter is 10 nm) of getting 15 g afterwards is in this mixing solutions, stir after 1 minute, each 1 g of dispersion agent (TAZ-CNT1) 1.5 g, water-based flow agent (BD-3033) and water-based defoamer (BD-304) that adds nano carbon black is in this mixing solutions.This mixing solutions places ball mill to grind and obtains nano carbon black heat radiation coating of the present invention at last, and wherein grinding rate is that 550 r/min, milling time are 5 hours.Good coating is sealed up for safekeeping stand-by to pour out ball milling.
Test as can be known by the method that embodiment 1 and embodiment 2 are put down in writing, the coating that present embodiment prepares also has embodiment 1 and embodiment 2 similar intensification and cooling variation tendency.Illustrate that nano carbon black heat radiation coating of the present invention has better heat radiating effect.
Embodiment 6
Earlier the waterborne polyurethane resin (CS1600) of 60 g and the mixed solvent of 40 g are mixed with the formation mixing solutions, wherein, mixed solvent is the mixture of the water of the ethanol of 10 g and 30 g.The nano carbon black powder (particle diameter is 15 nm) of getting 15 g afterwards is in this mixing solutions, stir after 1 minute, each 1.5 g of dispersion agent (TAZ-CNT1) 2 g, water-based flow agent (BD-3033) and water-based defoamer (BD-304) that add nano carbon black are in this mixing solutions.This mixing solutions places ball mill to grind and obtains nano carbon black heat radiation coating of the present invention at last, and wherein grinding rate is that 450 r/min, milling time are 6 hours.Good coating is sealed up for safekeeping stand-by to pour out ball milling.
Test as can be known by the method that embodiment 1 and embodiment 2 are put down in writing, the coating that present embodiment prepares also has embodiment 1 and embodiment 2 similar intensification and cooling variation tendency.Illustrate that nano carbon black heat radiation coating of the present invention has better heat radiating effect.
Comprehensive above-mentioned embodiment can learn that the present invention only needs this nano carbon black coating is coated on the heat abstractor, just has better heat radiating effect.

Claims (4)

1. a nano carbon black heat radiation coating is characterized in that, comprises following component:
Water-base resin 30~60 mass parts;
Nano carbon black 3~15 mass parts;
Dispersion agent 0.5~2.5 mass parts of nano carbon black;
Water-based flow agent 0.5~1.5 mass parts;
Water-based defoamer 0.5~1.5 mass parts;
Solvent 30~40 mass parts;
Described solvent is water and/or ethanol.
2. nano carbon black heat radiation coating according to claim 1 is characterized in that: described water-base resin is waterborne organic silicon resin, aqueous epoxy resins or waterborne polyurethane resin.
3. nano carbon black heat radiation coating according to claim 1 is characterized in that: the particle diameter of described nano carbon black is less than 20 nm.
4. a method for preparing the nano carbon black heat radiation coating of claim 1 is characterized in that, comprises the steps:
Take by weighing the dispersion agent of nano carbon black of water-based flow agent, 0.5~2.5 mass parts of nano carbon black powder, 0.5~1.5 mass parts of solvent, 3~15 mass parts of water-base resin, 30~40 mass parts of 30~60 mass parts and the water-based defoamer of 0.5~1.5 mass parts, and thorough mixing obtains mixing solutions, and described solvent is water and/or ethanol; After place ball mill to carry out ball milling described mixing solutions, its grinding rate is that 400~600 r/min, milling time are 4~6 hours.
CN2011102536768A 2011-08-31 2011-08-31 Nano-sized carbon black heat dissipating paint and preparation method thereof Pending CN102250546A (en)

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102627912A (en) * 2012-03-20 2012-08-08 江苏同辉照明科技有限公司 Preparation method of lighting tube heat dissipation paint
CN103173098A (en) * 2013-04-12 2013-06-26 东莞旭光五金氧化制品有限公司 Radiation heat dissipation cooling coating and production technology thereof
CN103555196A (en) * 2013-09-25 2014-02-05 天长市天泰光电科技有限公司 Nano aluminum nitride heat radiation paint for LED lamp and preparation method thereof
CN103834258A (en) * 2012-11-21 2014-06-04 湖南纳金节能环保科技有限公司 Nanometer diamond heat-dispersing energy-saving environmental-protection thin film coating, and preparation method and application method thereof
CN104059450A (en) * 2014-05-28 2014-09-24 安徽阜阳富龙建筑材料有限责任公司 High-temperature-resistant radiating coating
CN104119773A (en) * 2014-07-18 2014-10-29 山东晶华光电科技有限公司 Special heat radiation coating for heat radiator and preparation method thereof
CN104152004A (en) * 2014-05-06 2014-11-19 阜阳市光普照明科技有限公司 Nano carbon black radiating coating
CN104650697A (en) * 2014-06-26 2015-05-27 柳州市安龙机械设备有限公司 High temperature resistant nano coating
CN104804618A (en) * 2014-01-24 2015-07-29 江苏联科纳米科技有限公司 Aqueous heat dissipation coating and preparation method thereof
CN105524535A (en) * 2016-01-22 2016-04-27 何挺 Nanometer radiation heat radiation paint and manufacturing method thereof
CN106675392A (en) * 2016-12-09 2017-05-17 东来涂料技术(上海)有限公司 Water-based pressure-sensitive paint for detecting tire pressure and preparation method thereof
CN106867369A (en) * 2015-12-10 2017-06-20 天津榛发科技有限责任公司 A kind of LED lamp radiator carborundum coating
CN110016274A (en) * 2019-02-28 2019-07-16 常州五荣化工有限公司 A kind of preparation method of composite heat dissipation material
WO2022205581A1 (en) * 2021-03-29 2022-10-06 苏州大学 Nano-lamellar carbon black emulsion, and preparation method therefor and application thereof

Citations (1)

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Publication number Priority date Publication date Assignee Title
CN101649159A (en) * 2009-07-03 2010-02-17 山东富美科技有限公司 Preparation of nanoscale waterborne electric conduction coating liquid used for reconditioning charge roller

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101649159A (en) * 2009-07-03 2010-02-17 山东富美科技有限公司 Preparation of nanoscale waterborne electric conduction coating liquid used for reconditioning charge roller

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102627912A (en) * 2012-03-20 2012-08-08 江苏同辉照明科技有限公司 Preparation method of lighting tube heat dissipation paint
CN103834258A (en) * 2012-11-21 2014-06-04 湖南纳金节能环保科技有限公司 Nanometer diamond heat-dispersing energy-saving environmental-protection thin film coating, and preparation method and application method thereof
CN103173098A (en) * 2013-04-12 2013-06-26 东莞旭光五金氧化制品有限公司 Radiation heat dissipation cooling coating and production technology thereof
CN103173098B (en) * 2013-04-12 2016-01-20 东莞旭光五金氧化制品有限公司 Heat loss through radiation High tailored coating and production technique thereof
CN103555196A (en) * 2013-09-25 2014-02-05 天长市天泰光电科技有限公司 Nano aluminum nitride heat radiation paint for LED lamp and preparation method thereof
CN104804618A (en) * 2014-01-24 2015-07-29 江苏联科纳米科技有限公司 Aqueous heat dissipation coating and preparation method thereof
CN104804618B (en) * 2014-01-24 2017-11-07 江苏联科纳米科技有限公司 A kind of water-based cooling coating and preparation method thereof
CN104152004A (en) * 2014-05-06 2014-11-19 阜阳市光普照明科技有限公司 Nano carbon black radiating coating
CN104059450A (en) * 2014-05-28 2014-09-24 安徽阜阳富龙建筑材料有限责任公司 High-temperature-resistant radiating coating
CN104650697A (en) * 2014-06-26 2015-05-27 柳州市安龙机械设备有限公司 High temperature resistant nano coating
CN104119773A (en) * 2014-07-18 2014-10-29 山东晶华光电科技有限公司 Special heat radiation coating for heat radiator and preparation method thereof
CN106867369A (en) * 2015-12-10 2017-06-20 天津榛发科技有限责任公司 A kind of LED lamp radiator carborundum coating
CN105524535A (en) * 2016-01-22 2016-04-27 何挺 Nanometer radiation heat radiation paint and manufacturing method thereof
CN106675392A (en) * 2016-12-09 2017-05-17 东来涂料技术(上海)有限公司 Water-based pressure-sensitive paint for detecting tire pressure and preparation method thereof
CN110016274A (en) * 2019-02-28 2019-07-16 常州五荣化工有限公司 A kind of preparation method of composite heat dissipation material
WO2022205581A1 (en) * 2021-03-29 2022-10-06 苏州大学 Nano-lamellar carbon black emulsion, and preparation method therefor and application thereof

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Application publication date: 20111123