CN106888548A - 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
- Publication number
- CN106888548A CN106888548A CN201710131241.3A CN201710131241A CN106888548A CN 106888548 A CN106888548 A CN 106888548A CN 201710131241 A CN201710131241 A CN 201710131241A CN 106888548 A CN106888548 A CN 106888548A
- Authority
- CN
- China
- Prior art keywords
- graphene
- carbon nano
- aluminium
- composite radiating
- tube composite
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
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.Using aluminium-based copper-clad laminate combination technique, there are the radiator of graphene/carbon nano-tube composite radiating coating and thermal insulation layer (medium) bonding agent, the bonding of copper foil printed circuit plate to be integrated surface spraying, form 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 a kind of compound with graphene/carbon nano-tube
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 multi-forms, the printed circuit of difference in functionality
Plate, is all selectively to be processed in copper-clad plate, etched, drilled and the operation such as copper facing, is made different printed circuits (single
Face, two-sided, multilayer).This wiring board must possess good heat dispersion, in order to be able to allow wiring board to be in normal work shape
State, prior art is taken and 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 less and less, power demand is more and more stronger, and powerful power causes product to produce more heat
Amount, dainty volume again limits the heat-dissipating space of electronic device, and many times electronic product is because overheat occurs crashing or blocks
The phenomenon of shell, has had a strong impact on product quality.How its radiating effect is further improved in limited space, farthest
Radiating efficiency is improved, is current field of radiating urgent problem.
The content of the invention
The invention provides a kind of aluminium-based copper-clad laminate with graphene/carbon nano-tube composite radiating coating, according to
It is secondary including 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.
Present invention also offers a kind of above-mentioned aluminium-based copper foil coated pressure 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, obtain graphene/carbon nano-tube compound scattered
Hot coating dispersion liquid,
Wherein, in graphene/carbon nano-tube, the mass ratio of Graphene and CNT is 1:0.8~1.2,
Solvent is deionized water, ethanol, the mixed solvent of acetone, and the volume ratio of three is followed successively by 1：1~3：1~3,
Graphene/carbon nano-tube is 10~15 with the mass ratio of solvent：85~90,
During ultrasonic disperse, supersonic frequency is 30KHZ, and ultrasonic power is 2000W, and ultrasonic time is 30min,
A certain amount of binding agent (such as epoxy resin) can also be further added in the dispersion liquid of certain step (1)；
(2) the aluminium section substrate surface of radiator is coated on after reduced glutathione deionized water is disperseed, 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/CNT composite radiating coating, control the thickness of the graphene/carbon nano-tube composite radiating coating after solidification for 50~
120 μm,
Wherein, the concentration after the dispersion of reduced glutathione deionized water is 40~45g/L, reduced glutathione point
Require to coat to substrate surface as early as possible after dissipating in deionized water, and require graphite spraying alkene/CNT thereon as early as possible
Composite radiating coating dispersion liquid, because reduced glutathione itself can also occur certain decomposition in water, if respectively
Operation link interval too long, is easily caused reduced glutathione failure, and spraying effect is not good enough,
Curing process is 1~1.5h for the treatment of at 150~180 DEG C,
The characteristics of directly Graphene/carbon nanotube composite material high-specific surface area being utilized in this programme, i.e. superficial attractive forces
By force, surface can be big, and network structure can be formed when coating is dried, so that strengthen the adhesive force of coating and aluminium section substrate surface,
Avoid and influence is produced on thermal conductivity using adhesive；Simultaneously this programme be by the way of direct spraying realize heat dissipating layer with
Stable bond between aluminium section substrate, instead of traditional sheet material laminating operation；While applicant further found that, solidifying
Cheng Zhong, can occur certain chemical reaction between Graphene/carbon nanotube composite material, reduced glutathione and aluminium section three
So as to realize the strong bonded to thermal dispersant coatings, and in the solidification process of this programme, unnecessary reduced glutathione
Gradually decompose totally, in will not remaining 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 and thermal insulation layer (medium) bonding agent, Copper Foil to print
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 Figure 1.
Beneficial effects of the present invention also include：
The present invention uses graphene/carbon nano-tube composite radiating coating as aluminium-based copper-clad laminate radiator coating,
Due to the three dimensions hierarchy that graphene/carbon nano-tube is constituted, with high-specific surface area, excellent thermal conductivity, can increase
Coating area of dissipation, 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.Above feature can greatly improve the radiating efficiency of aluminium-based copper-clad laminate radiator, and reduce
Maintenance cost and manpower, with very strong practicality.
Brief description of the drawings
Fig. 1 is that the aluminium-based copper-clad laminate structure for having graphene/carbon nano-tube composite radiating coating in the present invention is shown
It is intended to, wherein, 1-radiator, 2-copper foil printed circuit plate, 3-thermal insulation layer (dielectric layer), 4-graphene/carbon nanometer
Pipe composite radiating coating.
Specific embodiment
Embodiment 1
(1) by graphene/carbon nano-tube (mass ratio 1：1) (gone with deionized water, ethanol, the mixed solvent of acetone three
Ionized water, ethanol, the mass ratio of acetone are 1：2：3) according to 15：The mixed frequency that is incorporated in of 85 mass ratio is for 30KHz, power are
Ultrasonic disperse 30min under conditions of 2000W, obtains graphene/carbon nano-tube composite radiating coating dispersion liquid；
(2) graphene/carbon nano-tube for being obtained in the upper step (1) of radiator aluminium section substrate surface spraying is compound scattered
Hot coating dispersion liquid, then by 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 conductivity factor of graphene/carbon nano-tube composite radiating coating prepared in the present embodiment is 780w/
m·k；
Then determine graphene/carbon nano-tube composite radiating coating in radiator aluminium section substrate table using scratch experiment
Adhesive strength on face, in the square lattice that the graphene/carbon nano-tube composite radiating coating surface knife scribing length of side is 2mm
25, fully it is pasted onto with adhesive tape on these foursquare grid, torn fast adhesive tape, the graphene/carbon of square lattice is received
There are 13 to come off in mitron composite radiating coating.
Embodiment 2
Compared to embodiment 1, before graphite spraying alkene/CNT composite radiating coating dispersion liquid, prior to radiator
Aluminium section substrate surface coats reduced glutathione dispersion liquid, and remaining operation is with embodiment 1：
(1) by graphene/carbon nano-tube (mass ratio 1：1) (gone with deionized water, ethanol, the mixed solvent of acetone three
Ionized water, ethanol, the mass ratio of acetone are 1：2：3) according to 15：The mixed frequency that is incorporated in of 85 mass ratio is for 30KHz, power are
Ultrasonic disperse 30min under conditions of 2000W, obtains graphene/carbon nano-tube composite radiating coating dispersion liquid；
(2) it is the rapid aluminium for being coated on radiator after 42g/L reduced glutathione deionized water to be dispersed into concentration
The graphene/carbon nano-tube composite radiating coating dispersion liquid obtained in matter section bar substrate surface, then the upper step (1) of rapid spraying,
Then by 160 DEG C of curing process 1.2 hours, graphene/carbon nano-tube composite radiating coating, the radiating after control solidification are obtained
Coating layer thickness is 100 μm.
After testing：The thermal conductivity factor of graphene/carbon nano-tube composite radiating coating prepared in the present embodiment is 800w/
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 method of testing is with embodiment 1：25 graphene/carbon nano-tubes of square lattice are measured to be combined
Thermal dispersant coatings none come off, it was demonstrated that use painting method of the invention, heat dissipating layer adhesive strength is excellent, satisfaction uses needs.
Embodiment 3
Compared to embodiment 1, a certain amount of binding agent is only added in the dispersion liquid of step (1), remaining operation is with real
Apply example 1：
(1) by graphene/carbon nano-tube (mass ratio 1：1), epoxy adhesive and deionized water, ethanol, acetone three
(deionized water, ethanol, the mass ratio of acetone are 1 to the mixed solvent of person：2：3) according to 15：8：77 mass ratio is mixed to be incorporated in frequency
Rate is 30KHz, power is ultrasonic disperse 30min under conditions of 2000W, obtains graphene/carbon nano-tube composite radiating coating point
Dispersion liquid；
(2) graphene/carbon nano-tube for being obtained in the upper step (1) of radiator aluminium section substrate surface spraying is compound scattered
Hot coating dispersion liquid, then by 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 conductivity factor of graphene/carbon nano-tube composite radiating coating prepared in the present embodiment is 710w/
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 method of testing is with embodiment 1：25 graphene/carbon nano-tubes of square lattice are measured to be combined
There is 1 to come 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 scribbling 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 accompanying drawing 1
It is shown.
Claims (10)
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 includes that copper foil printed circuit plate, thermal insulation layer, radiator, graphene/carbon are received successively in structure
Mitron composite radiating coating.
2. there is the aluminium-based copper-clad laminate of graphene/carbon nano-tube composite radiating coating as claimed in claim 1, it is special
Levy and be：The substrate of described 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, its feature
It is：Described 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 the upper step (1) of radiator aluminium section substrate surface spraying is applied
Layer dispersion liquid, then obtains graphene/carbon nano-tube composite radiating coating by curing process.
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 step (2) before graphite spraying alkene/CNT composite radiating coating dispersion liquid, prior to institute
The radiator aluminium section substrate surface coating reduced glutathione stated is scattered in the dispersion liquid that deionized water is formed.
5. the aluminium-based copper-clad laminate with graphene/carbon nano-tube composite radiating coating as described in claim 3 or 4
Painting method, it is characterised in that：In graphene/carbon nano-tube described in step (1), the mass ratio of Graphene and CNT
It is 1:0.8~1.2.
6. the aluminium-based copper-clad laminate with graphene/carbon nano-tube composite radiating coating as described in claim 3 or 4
Painting method, it is characterised in that：Solvent described in step (1) is deionized water, ethanol, the mixed solvent of acetone, three's
Volume ratio is followed successively by 1：1~3：1~3.
7. the aluminium-based copper-clad laminate with graphene/carbon nano-tube composite radiating coating as described in claim 3 or 4
Painting method, it is characterised in that：In step (1), graphene/carbon nano-tube is 10~15 with the mass ratio of solvent：85~90.
8. the aluminium-based copper-clad laminate with graphene/carbon nano-tube composite radiating coating as described in claim 3 or 4
Painting method, it is characterised in that：In step (1), supersonic frequency is 30KHZ, and ultrasonic power is 2000W, and ultrasonic time is
30min。
9. the painting of the aluminium-based copper-clad laminate with graphene/carbon nano-tube composite radiating coating as claimed in claim 4
Coating method, it is characterised in that：In step (2), the concentration after the dispersion of reduced glutathione deionized water is 40~45g/L.
10. the aluminium-based copper-clad laminate with graphene/carbon nano-tube composite radiating coating as described in claim 3 or 4
Painting method, it is characterised in that：In step (2), curing process is 1~1.5h for the treatment of at 150~180 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| CN106888548A true CN106888548A (en) | 2017-06-23 |
| CN106888548B CN106888548B (en) | 2018-11-13 |
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| CN109021784A (en) * | 2018-07-14 | 2018-12-18 | 合肥艾飞新材料有限公司 | A kind of carbon nanotube heat radiation coating and preparation method thereof |
| CN112391128A (en) * | 2019-08-13 | 2021-02-23 | 上海优梯熙光学材料有限公司 | High-thermal-conductivity graphene heat dissipation material and preparation process thereof |
| CN115442955A (en) * | 2022-08-31 | 2022-12-06 | 楚能新能源股份有限公司 | PCB applied to battery module and preparation method thereof |
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| CN115442955A (en) * | 2022-08-31 | 2022-12-06 | 楚能新能源股份有限公司 | PCB applied to battery module and preparation method thereof |
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|---|---|
| CN106888548B (en) | 2018-11-13 |
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