CN106888548B - A kind of aluminium-based copper-clad laminate and its painting method with graphene/carbon nano-tube composite radiating coating - Google Patents
A kind of aluminium-based copper-clad laminate and its painting method with graphene/carbon nano-tube composite radiating coating Download PDFInfo
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- CN106888548B CN106888548B CN201710131241.3A CN201710131241A CN106888548B CN 106888548 B CN106888548 B CN 106888548B CN 201710131241 A CN201710131241 A CN 201710131241A CN 106888548 B CN106888548 B CN 106888548B
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0201—Thermal arrangements, e.g. for cooling, heating or preventing overheating
- H05K1/0203—Cooling of mounted components
- H05K1/0209—External configuration of printed circuit board adapted for heat dissipation, e.g. lay-out of conductors, coatings
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/06—Thermal details
- H05K2201/066—Heatsink mounted on the surface of the PCB
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10227—Other objects, e.g. metallic pieces
- H05K2201/10416—Metallic blocks or heatsinks completely inserted in a PCB
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Laminated Bodies (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
- Paints Or Removers (AREA)
Abstract
The invention belongs to electronic circuit board field of material technology, and in particular to a kind of aluminium-based copper-clad laminate and its painting method with graphene/carbon nano-tube composite radiating coating.Utilize aluminium-based copper-clad laminate combination technique, there is the radiator of graphene/carbon nano-tube composite radiating coating to be integrated with thermal insulation layer (medium) bonding agent, the bonding of copper foil printed circuit plate surface spraying, forms the aluminium-based copper-clad laminate with graphene/carbon nano-tube composite radiating coating.
Description
Technical field
The invention belongs to electronic circuit board field of material technology, and in particular to one kind has graphene/carbon nano-tube compound
The aluminium-based copper-clad laminate and its painting method of thermal dispersant coatings.
Background technology
Copper-clad plate is the extremely important basic material of printed circuit board, various different forms, different function printed circuit
Plate is all selectively to be processed, etch in copper-clad plate, drilling and the processes such as copper facing, and it is (single that different printed circuits is made
Face, two-sided, multilayer).This wiring board must have good heat dissipation performance, in order to allow wiring board to be in normal work shape
State, prior art is taken installs the technical measures such as the aluminium radiating board with wing rib additional in aluminium foil plate surface.With electronic product skill
Art is constantly flourishing, and small product size is smaller and smaller, power demand is more and more stronger, and powerful power causes product to generate more heat
Amount, dainty volume again limit the heat-dissipating space of electronic device, and many times electronic product is because overheat occurs crashing or block
The phenomenon that shell, has seriously affected product quality.How in a limited space in further increase its heat dissipation effect, farthest
Radiating efficiency is improved, is current field of radiating urgent problem.
Invention content
The present invention provides a kind of aluminium-based copper-clad laminate with graphene/carbon nano-tube composite radiating coating, according to
It is secondary include copper foil printed circuit plate, thermal insulation layer (dielectric layer), radiator, graphene/carbon nano-tube composite radiating coating,
Wherein, the substrate of radiator is aluminium section, and graphene/carbon nano-tube composite radiating coating is attached to the aluminum type
Material substrate surface.
The present invention also provides a kind of above-mentioned aluminium-based copper foil coated pressures with graphene/carbon nano-tube composite radiating coating
The painting method of plate：
(1) graphene/carbon nano-tube, solvent are mixed and ultrasonic disperse is abundant, it is compound scattered to obtain graphene/carbon nano-tube
Hot coating dispersion liquid,
Wherein, in graphene/carbon nano-tube, the mass ratio of graphene and carbon nanotube is 1:0.8~1.2,
Solvent be deionized water, ethyl alcohol, acetone mixed solvent, the volume ratio of three is followed successively by 1：1~3：1~3,
The mass ratio of graphene/carbon nano-tube and solvent is 10~15：85~90,
When ultrasonic disperse, supersonic frequency 30KHZ, ultrasonic power 2000W, ultrasonic time 30min,
A certain amount of binder (such as epoxy resin) can also further be added in the dispersion liquid of certain step (1)；
(2) the aluminium section substrate surface of radiator is coated on after disperseing reduced glutathione deionized water, then
The graphene/carbon nano-tube composite radiating coating dispersion liquid obtained in step (1) in spraying, then obtains stone by curing process
Black alkene/carbon nanotube composite radiating coating, control solidification after graphene/carbon nano-tube composite radiating coating thickness be 50~
120 μm,
Wherein, a concentration of 40~45g/L after reduced glutathione deionized water is disperseed, reduced glutathione point
It requires to be coated as early as possible to substrate surface after dissipating in deionized water, and requires graphite spraying alkene/carbon nanotube on it as early as possible
Composite radiating coating dispersion liquid, this is because itself certain decomposition can also occur for reduced glutathione in water, if respectively
Operation link interval too long, is easy to cause reduced glutathione failure, and spraying effect is not good enough,
Curing process is that 1~1.5h is handled at 150~180 DEG C,
The characteristics of Graphene/carbon nanotube composite material high-specific surface area is directly utilized in this programme, i.e. superficial attractive forces
By force, surface energy is big, and coating can form reticular structure when drying, to enhance the adhesive force of coating and aluminium section substrate surface,
It avoids and thermal conductivity is had an impact using adhesive；Simultaneously this programme using direct spraying by the way of i.e. realize heat dissipating layer and
Stable bond between aluminium section substrate, instead of traditional plank laminating operation；Applicant further found that, curing simultaneously
Between Graphene/carbon nanotube composite material, reduced glutathione and aluminium section three certain chemical reaction can occur for Cheng Zhong
To realize the firm connection to thermal dispersant coatings, and in the solidification process of this programme, extra reduced glutathione
It gradually decomposes totally, will not remain in aluminium section substrate surface or thermal dispersant coatings.
On the basis of above-mentioned coating processes, the present invention utilizes existing aluminium-based copper-clad laminate combination technique,
Surface spraying has the radiator of graphene/carbon nano-tube composite radiating coating to be printed with thermal insulation layer (medium) bonding agent, copper foil
Circuit board bonding processed is integrated, and forms the aluminium-based copper-clad laminate with graphene/carbon nano-tube composite radiating coating, substantially
Structure is as shown in Fig. 1.
Beneficial effects of the present invention further include：
The present invention using graphene/carbon nano-tube composite radiating coating as aluminium-based copper-clad laminate radiator coating,
Due to the three dimensions hierarchical structure that graphene/carbon nano-tube is constituted, there is high-specific surface area, excellent thermal conductivity, can increase
Coating heat dissipation area reduces body surface and internal temperature；The space structure and height of graphene/carbon nano-tube composite radiating coating
Specific surface area can be excited by the resonance effects of matel coated spreader surface, significantly improve infrared emittance, accelerate heat from dissipating
Hot device surface Quick diffusing.The above feature can greatly improve the radiating efficiency of aluminium-based copper-clad laminate radiator, and reduce
Maintenance cost and manpower have very strong practicability.
Description of the drawings
Fig. 1 is that the aluminium-based copper-clad laminate structure with graphene/carbon nano-tube composite radiating coating is shown in the present invention
It is intended to, wherein 1-radiator, 2-copper foil printed circuit plates, 3-thermal insulation layers (dielectric layer), 4-graphene/carbon nanometers
Pipe composite radiating coating.
Specific implementation mode
Embodiment 1
(1) by graphene/carbon nano-tube (mass ratio 1：1) mixed solvent with deionized water, ethyl alcohol, acetone three (is gone
Ionized water, ethyl alcohol, acetone mass ratio be 1：2：3) according to 15：85 mass ratio is mixed to be incorporated in that frequency is 30KHz, power is
Ultrasonic disperse 30min under conditions of 2000W obtains graphene/carbon nano-tube composite radiating coating dispersion liquid；
(2) graphene/carbon nano-tube obtained in the upper step (1) of radiator aluminium section substrate surface spraying is compound scattered
Hot coating dispersion liquid, then passes through 160 DEG C of curing process 1.2 hours, obtains graphene/carbon nano-tube composite radiating coating, controls
Thermal dispersant coatings thickness after system solidification is 100 μm.
After testing：The thermal coefficient of prepared graphene/carbon nano-tube composite radiating coating is 780w/ in the present embodiment
m·k；
Then determine graphene/carbon nano-tube composite radiating coating in radiator aluminium section substrate table using scratch experiment
Adhesive strength on face, the square lattice for being 2mm with the knife scribing length of side in graphene/carbon nano-tube composite radiating coating surface
It 25, is fully pasted onto with adhesive tape on the grid of these squares, the graphene/carbon of torn fast adhesive tape, square lattice is received
There are 13 to fall off in mitron composite radiating coating.
Embodiment 2
Compared to embodiment 1, before graphite spraying alkene/carbon nanotube composite radiating coating dispersion liquid, prior to radiator
Aluminium section substrate surface coats reduced glutathione dispersion liquid, remaining operation is the same as embodiment 1：
(1) by graphene/carbon nano-tube (mass ratio 1：1) mixed solvent with deionized water, ethyl alcohol, acetone three (is gone
Ionized water, ethyl alcohol, acetone mass ratio be 1：2：3) according to 15：85 mass ratio is mixed to be incorporated in that frequency is 30KHz, power is
Ultrasonic disperse 30min under conditions of 2000W obtains graphene/carbon nano-tube composite radiating coating dispersion liquid；
(2) aluminium of radiator is coated on after reduced glutathione being dispersed to a concentration of 42g/L with deionized water rapidly
The graphene/carbon nano-tube composite radiating coating dispersion liquid obtained in matter proximate matter substrate surface, then the upper step (1) of rapid spraying,
Then pass through 160 DEG C of curing process 1.2 hours, obtain graphene/carbon nano-tube composite radiating coating, the heat dissipation after control solidification
Coating layer thickness is 100 μm.
After testing：The thermal coefficient of prepared graphene/carbon nano-tube composite radiating coating is 800w/ in the present embodiment
m·k；
Then determine graphene/carbon nano-tube composite radiating coating in radiator aluminium section substrate table using scratch experiment
Adhesive strength on face, specific test method is the same as embodiment 1：The graphene/carbon nano-tube for measuring 25 square lattices is compound
Thermal dispersant coatings none fall off, it was demonstrated that painting method using the present invention, heat dissipating layer adhesive strength is excellent, meet use needs.
Embodiment 3
Compared to embodiment 1, a certain amount of binder is only added in the dispersion liquid of step (1), remaining operation is the same as real
Apply example 1：
(1) by graphene/carbon nano-tube (mass ratio 1：1), epoxy adhesive and deionized water, ethyl alcohol, acetone three
Person mixed solvent (deionized water, ethyl alcohol, acetone mass ratio be 1：2：3) according to 15：8：77 mass ratio is mixed to be incorporated in frequency
Ultrasonic disperse 30min under conditions of rate is 30KHz, power is 2000W obtains graphene/carbon nano-tube composite radiating coating point
Dispersion liquid；
(2) graphene/carbon nano-tube obtained in the upper step (1) of radiator aluminium section substrate surface spraying is compound scattered
Hot coating dispersion liquid, then passes through 160 DEG C of curing process 1.2 hours, obtains graphene/carbon nano-tube composite radiating coating, controls
Thermal dispersant coatings thickness after system solidification is 100 μm.
After testing：The thermal coefficient of prepared graphene/carbon nano-tube composite radiating coating is 710w/ in the present embodiment
m·k；
Then determine graphene/carbon nano-tube composite radiating coating in radiator aluminium section substrate table using scratch experiment
Adhesive strength on face, specific test method is the same as embodiment 1：The graphene/carbon nano-tube for measuring 25 square lattices is compound
There is 1 to fall off in thermal dispersant coatings.
On the basis of the various embodiments described above, using existing aluminium-based copper-clad laminate combination technique, surface is sprayed
The radiator and thermal insulation layer bonding agent, copper foil printed circuit plate for being coated with graphene/carbon nano-tube composite radiating coating bind
It is integrated, forms the aluminium-based copper-clad laminate with graphene/carbon nano-tube composite radiating coating, general configuration such as attached drawing 1
It is shown.
Claims (9)
1. a kind of aluminium-based copper-clad laminate with graphene/carbon nano-tube composite radiating coating, it is characterised in that：Described
Aluminium-based copper-clad laminate is received including copper foil printed circuit plate, thermal insulation layer, radiator, graphene/carbon successively in structure
Mitron composite radiating coating；The spreader surface coats reduced glutathione.
2. the aluminium-based copper-clad laminate with graphene/carbon nano-tube composite radiating coating as described in claim 1, special
Sign is：The substrate of the radiator is aluminium section, and the graphene/carbon nano-tube composite radiating coating is attached to described
Aluminium section substrate surface.
3. a kind of painting method of the aluminium-based copper-clad laminate with graphene/carbon nano-tube composite radiating coating, feature
It is：The painting method is,
(1) graphene/carbon nano-tube, solvent are mixed and ultrasonic disperse is abundant, obtain the painting of graphene/carbon nano-tube composite radiating
Layer dispersion liquid；
(2) the graphene/carbon nano-tube composite radiating obtained in upper step (1) is sprayed in radiator aluminium section substrate surface to apply
Layer dispersion liquid, before graphite spraying alkene/carbon nanotube composite radiating coating dispersion liquid, prior to the radiator aluminium section
Substrate surface coating reduced glutathione is scattered in deionized water and is formed by dispersion liquid, then obtains stone by curing process
Black alkene/carbon nanotube composite radiating coating.
4. the painting of the aluminium-based copper-clad laminate with graphene/carbon nano-tube composite radiating coating as claimed in claim 3
Coating method, it is characterised in that：In graphene/carbon nano-tube described in step (1), the mass ratio of graphene and carbon nanotube is
1:0.8~1.2.
5. the painting of the aluminium-based copper-clad laminate with graphene/carbon nano-tube composite radiating coating as claimed in claim 3
Coating method, it is characterised in that：Solvent described in step (1) be deionized water, ethyl alcohol, acetone mixed solvent, the body of three
Product ratio is followed successively by 1：1~3：1~3.
6. the painting of the aluminium-based copper-clad laminate with graphene/carbon nano-tube composite radiating coating as claimed in claim 3
Coating method, it is characterised in that：In step (1), the mass ratio of graphene/carbon nano-tube and solvent is 10~15：85~90.
7. the painting of the aluminium-based copper-clad laminate with graphene/carbon nano-tube composite radiating coating as claimed in claim 3
Coating method, it is characterised in that：In step (1), supersonic frequency 30KHZ, ultrasonic power 2000W, ultrasonic time 30min.
8. the painting of the aluminium-based copper-clad laminate with graphene/carbon nano-tube composite radiating coating as claimed in claim 3
Coating method, it is characterised in that：In step (2), reduced glutathione deionized water disperse after a concentration of 40~45g/L.
9. the painting of the aluminium-based copper-clad laminate with graphene/carbon nano-tube composite radiating coating as claimed in claim 3
Coating method, it is characterised in that：In step (2), curing process is that 1~1.5h is handled at 150~180 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710131241.3A CN106888548B (en) | 2017-03-07 | 2017-03-07 | A kind of aluminium-based copper-clad laminate and its painting method with graphene/carbon nano-tube composite radiating coating |
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| CN201710131241.3A CN106888548B (en) | 2017-03-07 | 2017-03-07 | A kind of aluminium-based copper-clad laminate and its painting method with graphene/carbon nano-tube composite radiating coating |
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| CN106888548B true CN106888548B (en) | 2018-11-13 |
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| CN109021784B (en) * | 2018-07-14 | 2021-03-12 | 安徽星鑫材料科技股份有限公司 | Carbon nano tube heat dissipation coating and preparation method thereof |
| CN112391128B (en) * | 2019-08-13 | 2023-01-10 | 上海优梯熙光学材料有限公司 | High-thermal-conductivity graphene heat dissipation material and preparation process thereof |
| CN115442955B (en) * | 2022-08-31 | 2023-06-20 | 楚能新能源股份有限公司 | PCB (printed circuit board) applied to battery module and preparation method thereof |
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| JP5947297B2 (en) * | 2010-08-05 | 2016-07-06 | ハンワ ケミカル コーポレイション | Highly efficient heat-dissipating paint composition using carbon material |
| CN103725263A (en) * | 2013-12-17 | 2014-04-16 | 张家港康得新光电材料有限公司 | Film made from graphene-carbon nanotube composite material and preparation method of film |
| CN104231701A (en) * | 2014-10-09 | 2014-12-24 | 哈尔滨工业大学 | Infrared radiating coating for photovoltaic module backing plate and preparation method of radiating photovoltaic module backing plate |
| CN104693968A (en) * | 2015-03-09 | 2015-06-10 | 安徽宏皇信息科技有限公司 | High heat conduction and dissipation coating and preparation method thereof |
| CN105131699A (en) * | 2015-09-29 | 2015-12-09 | 华南师范大学 | Composite diamond heat-dissipating material and preparing method thereof |
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Inventor after: Xue Maoquan Inventor after: Yuan Feng Inventor before: Yuan Feng Inventor before: Xue Maoquan |
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Address after: 213164 No.28, Mingxin Middle Road, Wujin District, Changzhou City, Jiangsu Province Patentee after: Changzhou Polytechnic Address before: 213164 No.28, Mingxin Middle Road, Wujin District, Changzhou City, Jiangsu Province Patentee before: Changzhou Institute of Industry Technology |