CN103937298A - Inorganic heat dissipation paint and preparation method thereof - Google Patents
Inorganic heat dissipation paint and preparation method thereof Download PDFInfo
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- CN103937298A CN103937298A CN201410113833.9A CN201410113833A CN103937298A CN 103937298 A CN103937298 A CN 103937298A CN 201410113833 A CN201410113833 A CN 201410113833A CN 103937298 A CN103937298 A CN 103937298A
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Abstract
The invention provides inorganic heat dissipation paint and a preparation method thereof. The inorganic heat dissipation paint includes uniformly mixed combination solution and heat dissipation slurry. The components of the combination solution comprise: 5%-20% of phosphate ion, 0.1%-5% of metal cation, 1%-10% of an inorganic oxidizing agent and 65%-93.9% of water. The components of the heat dissipation slurry comprise: 0.1%-10% of a graphite pigment and 90%-99.9% of water. The inorganic heat dissipation paint is obtained in a manner of mixing the combination solution and the heat dissipation slurry uniformly with a mass ratio of the combination solution to the heat dissipation slurry being 1:3-3:1. The inorganic heat dissipation paint is high in bonding force, is high-temperature resistant, is low in price, is wide in raw material source, and is excellent in thermal conductivity and heat dissipating effect. The paint is easy to store, can be used at any time without an on-site preparation operation and has a wide application scope. A film formed from the paint is thin and is light in mass with a weight gain on parts to be sprayed being low. The preparation method of the invention is simple, is free of pollution and is easy to form an industrialized production.
Description
Technical field
The invention belongs to functional coating Development Techniques field, particularly relate to a kind of inorganic heat radiation coating and preparation method thereof, relate in particular to a kind of phosphoric acid salt superpolymer type graphite-like heat radiation coating.
Background technology
Along with electronics microminiaturization, it is highly integrated that system is more and more tending towards high-density, and the heat flow density of product becomes greatly increasingly, and heat-sinking capability deficiency will certainly have influence on performance and the life-span of product.Current cooling electronic component is mainly by solving the mode of spreader surface natural convection or forced convection.The high-temperature component of equipment more adopts high temperature resistant material to solve, if prepare one deck heat radiation coating on high-temperature component surface, will greatly reduce the requirement of high temperature resistant material, thereby reduces production costs.
Existing heat radiation coating major part is organic solvent type heat radiation coating or powder coating, even if there is a small amount of water-based cooling coating, also containing organic composition, unfriendly to environment in system.The filler of existing heat radiation coating generally adopts metallic substance or graphite material.Even the silver powder that metallic substance thermal conductivity is the highest, thermal conductivity is only also 429W/ (MK), and expensive.And that graphite type material has is cheap, the advantage that heat conductivility is good.Even the thermal conductivity of general Graphite Powder 99 is also generally 300W/ (MK).Graphene, especially as a kind of type material, has good thermal conductivity.It is reported that the thermal conductivity of single-layer graphene is 3080-5150W/ (MK), the thermal conductivity of multi-layer graphene is generally also more than 1500W/ (MK), and therefore Graphene heat radiation coating has great application prospect.
Patent CN102250546A provides a kind of preparation method of nano carbon black heat radiation coating, although employing water-based system, but still use the organic composition such as water-base resin and various aqueous promoters, and preparation process need use ball milling method to prepare 4-6h, preparation process complexity.
Although a kind of method of preparing Graphene coating is provided in patent CN102764724A and patent CN102755950A, the aqueous solution that Graphene coating is Graphene or organic solvent solution, coating is easily reunited, and difficulty of construction is higher.And coating need carry out preheating to workpiece while preparing, efficiency consumes high.
Patent CN102573413A provides a kind of preparation method and application of Graphene heat radiation coating, and this Graphene coating need adopt supporting layer+Graphene coating+bonding coat three-layered node to close.Not only complex process needs special processing units but also use temperature affected by bonding coat material.
Summary of the invention
The object of the invention is for provide a kind of eco-friendly, can be applied in 700 DEG C of following aerobic environments, inorganic heat radiation coating in 900 DEG C of following oxygen-free environments and preparation method thereof, and this inorganic heat radiation coating is easy to production, light weight, thin, bonding strength is excellent, and radiating effect is good.
The technical solution adopted in the present invention is:
A kind of inorganic heat radiation coating, comprises the binding soln and the heat radiation slurry that mix; The component of described binding soln and content are:
The component of described heat radiation slurry and content are:
Graphite-like pigment 0.1%～10%
Water 90%～99.9%;
Described binding soln and heat radiation slurry mix and obtain inorganic heat radiation coating by the mass ratio of 1:3～3:1.
Described phosphate anion derives from one or more in phosphoric acid, Vanadium Pentoxide in FLAKES and phosphoric acid salt.
Described metallic cation is one or more in the positively charged ion of magnesium, aluminium, copper and zinc, derives from one or more in magnesium, aluminium, copper, zinc and above-mentioned metal oxide and salt.
Described inorganic oxidizer is one or more in chromic anhydride, potassium permanganate and Vanadium Pentoxide in FLAKES.
Described water is deionized water.
Described graphite-like pigment is one or more in graphite, CNT (carbon nano-tube), carbon black and Graphene.
The preparation method of described inorganic heat radiation coating, specifically comprises the following steps:
A. by formula ratio, one or more of the raw material containing magnesium, aluminium, copper, zinc are added in the phosphoric acid, Vanadium Pentoxide in FLAKES of corresponding formula ratio, phosphatic one or more mixture, question response obtains inorganic phosphate superpolymer after completely;
B. the inorganic phosphate superpolymer, inorganic oxidizer and the water-dispersion that by formula ratio, step a are obtained mix, and obtain binding soln;
C. press formula ratio by graphite-like colo(u)rant dispersion in water, obtain the slurry that dispels the heat;
D. the heat radiation slurry that binding soln step b being obtained and step c obtain is in mass ratio for 1:3～3:1 mixes;
E. mixing solutions steps d being obtained adopts ultrasonic dispersion or high-speed stirring mode to mix, and obtains inorganic heat radiation coating.
Compared with prior art, advantage of the present invention is:
(1) to adopt inorganic phosphate superpolymer be the filmogen of heat radiation coating in the present invention, has high, the resistant to elevated temperatures advantage of bonding force.
(2) the present invention adopts water as solvent, has cheap, raw material advantage widely.
(3) the present invention adopts graphite type material as filler, has thermal conductivity good, the advantage of radiating effect excellence.Especially adopt Graphene not only to have thermal conductivity as filler good, it is reported that the thermal conductivity of single-layer graphene is 3080-5150W/ (MK), the thermal conductivity of multi-layer graphene is generally also more than 1500W/ (MK).There is resistant to elevated temperatures advantage simultaneously, can be applied in 700 DEG C of following aerobic environments and in 900 DEG C of following oxygen-free environments.
(4) in the present invention the preparation method of inorganic heat radiation coating simple, pollution-free be easy to industrialization produce.
(5) in the present invention, inorganic heat radiation coating storage is simple, without now with the current.
(6) in the present invention, heat radiation coating can adopt spraying method to prepare coating, can arbitrarily angledly spray,
Even the high-temperature component in baroque heat radiation elements or equipment is all suitable for, applied widely.
(7) in the present invention, the film forming of heat radiation coating is thin, and quality is light, low to the weightening finish of spraying parts, is specially adapted to be sprayed on radiating element or high-temperature component.
Brief description of the drawings
Fig. 1 is the thermogravimetric curve of heat radiation coating in aerobic environment in the embodiment of the present invention 1.
Fig. 2 is the thermogravimetric curve of heat radiation coating in oxygen-free environment in the embodiment of the present invention 1.
Embodiment
The invention discloses a kind of inorganic heat radiation coating and preparation method thereof, concrete:
Inorganic heat radiation coating comprises the binding soln A and the heat radiation slurry B that mix.Wherein:
The component of binding soln A and content are:
Wherein: phosphate anion derives from one or more of phosphoric acid, Vanadium Pentoxide in FLAKES and phosphoric acid salt etc.Metallic cation is one or more in the positively charged ion of magnesium, aluminium, copper and zinc etc., derives from one or more of magnesium, aluminium, copper, zinc and above-mentioned metal oxide and salt etc.Inorganic oxidizer is corrosion inhibitor, is one or more in these strong oxidizers such as chromic anhydride, potassium permanganate and Vanadium Pentoxide in FLAKES.Water is deionized water.
Component and the content of heat radiation slurry B are:
Graphite-like pigment 0.1%～10%
Water 90%～99.9%;
Wherein: graphite-like pigment is heat radiation pigment, be one or more of these graphite-like products such as graphite, CNT (carbon nano-tube), carbon black and Graphene.Water is deionized water.
The preparation method of the inorganic heat radiation coating of the present invention, is to prepare respectively inorganic binding soln A and heat radiation slurry B, and the mode of disperseing by ultrasonic dispersion or high-speed stirring, mixes and obtain inorganic heat radiation coating in connection with solution A, two kinds of components of heat radiation slurry B.
Specifically comprise the following steps:
A. by formula ratio, one or more of the raw material containing magnesium, aluminium, copper, zinc are added in the phosphoric acid, Vanadium Pentoxide in FLAKES of corresponding formula ratio, phosphatic one or more mixture, question response obtains inorganic phosphate superpolymer after completely; The filmogen that this inorganic phosphate superpolymer is inorganic heat radiation coating.
B. the inorganic phosphate superpolymer, inorganic oxidizer and the water-dispersion that by formula ratio, step a are obtained mix, and obtain binding soln A;
C. press formula ratio by graphite-like colo(u)rant dispersion in water, slurry B obtains dispelling the heat;
D. the heat radiation slurry B that binding soln A step b being obtained and step c obtain is in mass ratio for 1:3～3:1 mixes;
E. mixing solutions steps d being obtained adopts ultrasonic dispersion or high-speed stirring mode to mix, and obtains inorganic heat radiation coating.
Below in conjunction with embodiment and accompanying drawing, the present invention will be further described; described content is only the basic explanation of the present invention under conceiving; but this explanation is not limited to example below, any equivalent transformation of doing according to technical scheme of the present invention, all belongs to protection scope of the present invention.
Embodiment 1
First the metallic aluminium powder of 5g is added in the phosphoric acid solution of 10g, after question response is complete, obtain inorganic phosphate aluminium salt superpolymer, secondly the chromic anhydride of 5g is added in inorganic phosphate aluminium salt superpolymer and mixed, finally with 80g water, mixture diluted is obtained to binding soln A.
The Graphene of 3g is distributed in the pure water of 97g, slurry B obtains dispelling the heat.
Be 2:1 mixing in mass ratio in connection with solution A and heat radiation slurry B.Adopt ultrasonic dispersing mode to disperse 1h to obtain inorganic heat radiation coating mixing solutions.
For the use temperature of heat radiation coating in test implementation example 1, due to device-restrictive, in aerobic environment 25-700 DEG C, oxygen-free environment 25-900 DEG C, carry out thermogravimetric experiment respectively, thermogravimetric curve is respectively as shown in Figure 1 and Figure 2.
As can be seen from Figure 1 the heat radiation coating that prepared by embodiment 1 can use in the aerobic environment of 25-700 DEG C, plays effect of heat radiation.
As can be seen from Figure 2 the heat radiation coating that prepared by embodiment 1 can use in the oxygen-free environment of 25-900 DEG C, plays effect of heat radiation.
For heat radiation coating in test implementation example 1 is in the bonding strength on aluminium test plate (panel) surface, on aluminium base, use spraying method preparation heat radiation coating, carry out bonding strength test according to GB GB/T9286-1998.It is 0 grade in conjunction with grade.When actual spraying, heat radiation coating prepared by embodiment 1 has good bonding properties on aluminium base, is 0 grade in conjunction with grade.
Embodiment 2
First the magnesiumcarbonate of 5g is added in the phosphoric acid solution of 20g, after question response is complete, obtain inorganic phosphate magnesium salts superpolymer, secondly the potassium permanganate of 5g is added in inorganic phosphate magnesium salts superpolymer and mixed, finally with 70g water, mixture diluted is obtained to binding soln A.
By the carbon black dispersion of 5g, in the pure water of 95g, slurry B obtains dispelling the heat.
Be 3:2 mixing in mass ratio in connection with solution A and heat radiation slurry B.Adopt ultrasonic dispersing mode to disperse 0.5h to obtain inorganic heat radiation coating mixing solutions.
Embodiment 3
First the cupric oxide of 3g is added in the phosphoric acid solution of 17g, after question response is complete, obtain inorganic phosphate mantoquita superpolymer, secondly the Vanadium Pentoxide in FLAKES of 3g is added in inorganic phosphate mantoquita superpolymer and mixed, finally with 77g water, mixture diluted is obtained to binding soln A.
The graphite of 3g is distributed in the pure water of 97g, slurry B obtains dispelling the heat.
Be 5:3 mixing in mass ratio in connection with solution A and heat radiation slurry B.Adopt ultrasonic dispersing mode to disperse 1.5h to obtain inorganic heat radiation coating mixing solutions.
Claims (7)
1. an inorganic heat radiation coating, comprises the binding soln and the heat radiation slurry that mix; It is characterized in that: the component of described binding soln and content are:
The component of described heat radiation slurry and content are:
Graphite-like pigment 0.1%～10%
Water 90%～99.9%;
Described binding soln and heat radiation slurry mix and obtain inorganic heat radiation coating by the mass ratio of 1:3～3:1.
2. inorganic heat radiation coating according to claim 1, is characterized in that: described phosphate anion derives from one or more in phosphoric acid, Vanadium Pentoxide in FLAKES and phosphoric acid salt.
3. inorganic heat radiation coating according to claim 1, is characterized in that: described metallic cation is one or more in the positively charged ion of magnesium, aluminium, copper and zinc, derives from one or more in magnesium, aluminium, copper, zinc and above-mentioned metal oxide and salt.
4. inorganic heat radiation coating according to claim 1, is characterized in that: described inorganic oxidizer is one or more in chromic anhydride, potassium permanganate and Vanadium Pentoxide in FLAKES.
5. inorganic heat radiation coating according to claim 1, is characterized in that: described water is deionized water.
6. inorganic heat radiation coating according to claim 1, is characterized in that: described graphite-like pigment is one or more in graphite, CNT (carbon nano-tube), carbon black and Graphene.
7. according to the preparation method of inorganic heat radiation coating described in any one in claim 1～6, it is characterized in that: specifically comprise the following steps:
A. by formula ratio, one or more of the raw material containing magnesium, aluminium, copper, zinc are added in the phosphoric acid, Vanadium Pentoxide in FLAKES of corresponding formula ratio, phosphatic one or more mixture, question response obtains inorganic phosphate superpolymer after completely;
B. the inorganic phosphate superpolymer, inorganic oxidizer and the water-dispersion that by formula ratio, step a are obtained mix, and obtain binding soln;
C. press formula ratio by graphite-like colo(u)rant dispersion in water, obtain the slurry that dispels the heat;
D. the heat radiation slurry that binding soln step b being obtained and step c obtain is in mass ratio for 1:3～3:1 mixes;
E. mixing solutions steps d being obtained adopts ultrasonic dispersion or high-speed stirring mode to mix, and obtains inorganic heat radiation coating.
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| CN201410113833.9A CN103937298A (en) | 2014-03-25 | 2014-03-25 | Inorganic heat dissipation paint and preparation method thereof |
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| CN201410113833.9A CN103937298A (en) | 2014-03-25 | 2014-03-25 | Inorganic heat dissipation paint and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104848188A (en) * | 2015-03-30 | 2015-08-19 | 创金美科技（深圳）有限公司 | Method for improving performance of lamp radiator |
| CN109652845A (en) * | 2019-01-18 | 2019-04-19 | 东华大学 | A kind of preparation method of graphene enhancing composite coating based on chromium |
| CN115029022A (en) * | 2022-06-08 | 2022-09-09 | 郑州新世纪材料基因组工程研究院有限公司 | High-temperature electric heating slurry, electric infrared heating film and preparation method |
Citations (4)
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| JPS6412308B2 (en) * | 1981-06-17 | 1989-02-28 | Sumitomo Chemical Co | |
| CN1465630A (en) * | 2002-06-27 | 2004-01-07 | 朱春富 | Energy-saving type inorganic electrothermal coating material |
| CN101736138A (en) * | 2009-12-23 | 2010-06-16 | 北京科技大学 | Antioxidant coating applied to high-temperature alloy heat treatment |
| CN101906347A (en) * | 2010-08-05 | 2010-12-08 | 安徽工业大学 | Normal temperature cured water-based high temperature resistant solid lubricating coating and preparation method thereof |
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2014
- 2014-03-25 CN CN201410113833.9A patent/CN103937298A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6412308B2 (en) * | 1981-06-17 | 1989-02-28 | Sumitomo Chemical Co | |
| CN1465630A (en) * | 2002-06-27 | 2004-01-07 | 朱春富 | Energy-saving type inorganic electrothermal coating material |
| CN101736138A (en) * | 2009-12-23 | 2010-06-16 | 北京科技大学 | Antioxidant coating applied to high-temperature alloy heat treatment |
| CN101906347A (en) * | 2010-08-05 | 2010-12-08 | 安徽工业大学 | Normal temperature cured water-based high temperature resistant solid lubricating coating and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104848188A (en) * | 2015-03-30 | 2015-08-19 | 创金美科技（深圳）有限公司 | Method for improving performance of lamp radiator |
| CN109652845A (en) * | 2019-01-18 | 2019-04-19 | 东华大学 | A kind of preparation method of graphene enhancing composite coating based on chromium |
| CN115029022A (en) * | 2022-06-08 | 2022-09-09 | 郑州新世纪材料基因组工程研究院有限公司 | High-temperature electric heating slurry, electric infrared heating film and preparation method |
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Application publication date: 20140723 |