CN107046765A - The manufacture craft of double-side aluminum printed board - Google Patents
The manufacture craft of double-side aluminum printed board Download PDFInfo
- Publication number
- CN107046765A CN107046765A CN201710496937.6A CN201710496937A CN107046765A CN 107046765 A CN107046765 A CN 107046765A CN 201710496937 A CN201710496937 A CN 201710496937A CN 107046765 A CN107046765 A CN 107046765A
- Authority
- CN
- China
- Prior art keywords
- double
- aluminium
- printed board
- drilling
- side aluminum
- Prior art date
- 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.)
- Pending
Links
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
- H05K1/0204—Cooling of mounted components using means for thermal conduction connection in the thickness direction of the substrate
- H05K1/0206—Cooling of mounted components using means for thermal conduction connection in the thickness direction of the substrate by printed thermal vias
-
- 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
-
- 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
- H05K1/03—Use of materials for the substrate
- H05K1/05—Insulated conductive substrates, e.g. insulated metal substrate
-
- 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
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/0094—Filling or covering plated through-holes or blind plated vias, e.g. for masking or for mechanical reinforcement
Abstract
The invention discloses a kind of manufacture craft of double-side aluminum printed board, comprise the following steps：(1) two blocks of aluminium sheets are taken, one piece of aluminium board is combined into after the surface of aluminium sheet is carried out into electrochemicial oxidation；(2) both sides of aluminium board are covered into thermally conductive insulating layer, and conductive layer is covered in thermally conductive insulating layer both sides；(3) first time drilling is carried out using rig using phenolic aldehyde backing plate, is put into the burr removed in flash removed solution in drilling for the first time, takes out, washing；(4) insulating resin is filled in drilling for the first time；(5) aluminium board, insulating barrier and conductive lamination are merged and carries out baking sheet；(6) second is carried out in insulating resin hole to drill, and carry out heavy copper on the electrically conductive and in drilling for second.The double-side aluminum printed board that the present invention makes, with good heat conductivility, reduction product running temperature, raising product power density and reliability extend product service life.
Description
Technical field
The present invention relates to the technical field that printed circuit board makes, more particularly to a kind of making work of double-side aluminum printed board
Skill.
Background technology
With computer, communication and Space Science and Technology industrial expansion, to high-power and highly integrated high-end printed circuit
The demand of plate is increasingly urgent.
Because there is double-face aluminium substrate good thermal conductivity, electric insulating quality, proof voltage, dimensional stability and machinery to add
Unique performance such as work and be widely used, so as to reduce product running temperature, improve product power density, reliability, extension
Product service life.
The content of the invention
To achieve the above object, the present invention provides a kind of manufacture craft of double-side aluminum printed board, comprises the following steps：
(1) two blocks of aluminium sheets are taken, one piece of aluminium board is combined into after the surface of aluminium sheet is carried out into electrochemicial oxidation；
(2) both sides of aluminium board are covered into thermally conductive insulating layer, and conductive layer is covered in thermally conductive insulating layer both sides；
(3) first time drilling is carried out using rig using phenolic aldehyde backing plate, is put into flash removed solution and removes drilling for the first time
In burr, take out, washing；
(4) insulating resin with aluminium sheet similar thermal expansion coefficient is filled in drilling for the first time；
(5) aluminium board, insulating barrier and conductive lamination are merged and carries out baking sheet；
(6) second is carried out in insulating resin hole to drill, and carry out heavy copper on the electrically conductive and in drilling for second.
In above-mentioned technical proposal, the thickness of the oxide-film of step (1) electrochemical oxidation is at least 25 μm.
In above-mentioned technical proposal, step (2) described thermally conductive insulating layer includes modified epoxy and conducting filler.
In above-mentioned technical proposal, the modified epoxy includes epoxy resin and elastomer, and the elastomer includes contracting
Butyraldehyde, polyurethane and acrylate.
In above-mentioned technical proposal, step (5) pressure that uses of pressing is 135psi~150psi, and processing time is
10~20 minutes.
In above-mentioned technical proposal, the temperature of step (5) described baking sheet is 160 DEG C, and the time is 2.5~3.5 hours.
The beneficial effects of the present invention are：
(1) present invention utilize electrochemicial oxidation surface of aluminum plate, make aluminium sheet have higher hardness, resistance to corrosion,
Adsorption capacity and good heat resistance and insulating properties；
(2) present invention utilizes electrochemicial oxidation surface of aluminum plate, the thickness of the oxide-film of aluminium sheet is at least 25 μm, can
To prevent double-side aluminum printed board from layering bubble operationally occur, it can be very good to carry out when making double-side aluminum printed board work
Radiating, effectively alleviates thermal expansion, realizes the stability of the size of double-side aluminum printed board, while can extend double-side aluminum printing
The service life of plate；
(3) thermally conductive insulating layer that the present invention is prepared using modified epoxy and conducting filler has pastes well
Property, be conducive to the combination of thermally conductive insulating layer and aluminium sheet, it is convenient double-sided also with good chemical resistance, heat resistance and electrical property
The making of aluminium base printed board, and can be very good to be radiated when making double-side aluminum printed board work, while thermally conductive insulating layer institute
The elastomer cost used is low, reduces the production cost of double-side aluminum printed board；
(4) phenolic aldehyde backing plate is used when the present invention drill for the first time, the plate face of double-side aluminum printed board can be protected, is prevented
Only plate face is wiped flower or contaminated, while phenolic aldehyde backing plate can also fix the drill point of rig, is reduced skew, is assisted drill point to distribute heat
Amount, so as to improve the quality of double-side aluminum printed board；
(5) the thermal coefficient of expansion phase of the thermal coefficient of expansion and aluminium sheet of the insulating resin that the present invention is filled in being drilled in first time
Closely, it can prevent double-side aluminum printed board from operationally causing double-side aluminum printed board to break because aluminium sheet is different with the expansion of resin
It is bad, so as to reduce the service life of double-side aluminum printed board.
Embodiment
Describe the present invention in detail with reference to specific embodiment, illustrative examples of the invention and explanation are used herein
To explain the present invention, but it is not intended as the restriction of the present invention.
Embodiment 1：
A kind of manufacture craft of double-side aluminum printed board proposed by the present invention, comprises the following steps：
(1) two blocks of aluminium sheets are taken, the surface of aluminium sheet is subjected to electrochemical oxidation, the thickness for obtaining oxide-film is at least 25 μm
Aluminium sheet, can prevent double-side aluminum printed board from layering bubble operationally occur, then two blocks of aluminium sheets are combined into one piece of aluminium combination
Plate；
(2) conducting filler is taken, after conducting filler is handled with coupling agent, is sufficiently stirred for modified epoxy
Mixing, filtering, is evenly coated in aluminium board both sides, is dried 10 minutes in 150 DEG C, and thermally conductive insulating layer is formed on aluminium board,
It can be very good to be radiated when double-side aluminum printed board can be made to work, then conductive layer covered in thermally conductive insulating layer both sides；
(3) first time drilling is carried out using rig using phenolic aldehyde backing plate, is put into flash removed solution and removes drilling for the first time
In burr, taking-up water-filling of going forward side by side washes；
(4) by the insulating resin with aluminium sheet similar thermal expansion coefficient be filled in for the first time drill in, can prevent aluminium sheet it
Between be electrically connected with, so that the short circuit of double-side aluminum printed board is avoided, so as to extend the service life of double-side aluminum printed board；
(5) aluminium board, insulating barrier and conductive layer carry out under 135psi pressure to pressing 10 minutes, aluminium board it
Between the phenomenon without layering bubble, carry out high pressure resistant test to it, no superleak problem, then baking sheet 2.5 hours at 160 DEG C；
(6) second is carried out in insulating resin hole to drill, and carry out heavy copper on the electrically conductive and in drilling for second；
(7) dry film paste is taken on the copper face of conductive layer, and carries out film aligning, exposure, development；
(8) copper face and second of drilling to conductive layer carries out copper facing, and tin plating, etching removes dry film；
(9) silk-screen solder mask；
(10) silk-screen character, and conductive layer is surface-treated；
(11) milling profile, carries out electrical detection to multilayer copper-clad plate using four line low-resistances, checks, qualified to complete two-sided aluminium
The making of substrate.
Embodiment 2：
A kind of manufacture craft of double-side aluminum printed board proposed by the present invention, comprises the following steps：
(1) two blocks of aluminium sheets are taken, the surface of aluminium sheet is subjected to electrochemical oxidation, the thickness for obtaining oxide-film is at least 25 μm
Aluminium sheet, can prevent double-side aluminum printed board from layering bubble operationally occur, then two blocks of aluminium sheets are combined into one piece of aluminium combination
Plate；
(2) conducting filler is taken, after conducting filler is handled with coupling agent, is sufficiently stirred for modified epoxy
Mixing, filtering, is evenly coated in aluminium board both sides, is dried 10 minutes in 150 DEG C, and thermally conductive insulating layer is formed on aluminium board,
It can be very good to be radiated when double-side aluminum printed board can be made to work, then conductive layer covered in thermally conductive insulating layer both sides；
(3) first time drilling is carried out using rig using phenolic aldehyde backing plate, is put into flash removed solution and removes drilling for the first time
In burr, taking-up water-filling of going forward side by side washes；
(4) by the insulating resin with aluminium sheet similar thermal expansion coefficient be filled in for the first time drill in, can prevent aluminium sheet it
Between be electrically connected with, so that the short circuit of double-side aluminum printed board is avoided, so as to extend the service life of double-side aluminum printed board；
(5) aluminium board, insulating barrier and conductive layer carry out under 140psi pressure to pressing 15 minutes, aluminium board it
Between the phenomenon without layering bubble, carry out high pressure resistant test to it, no superleak problem, then baking sheet 3.0 hours at 160 DEG C；
(6) second is carried out in insulating resin hole to drill, and carry out heavy copper on the electrically conductive and in drilling for second；
(7) dry film paste is taken on the copper face of conductive layer, and carries out film aligning, exposure, development；
(8) copper face and second of drilling to conductive layer carries out copper facing, and tin plating, etching removes dry film；
(9) silk-screen solder mask；
(10) silk-screen character, and conductive layer is surface-treated；
(11) milling profile, carries out electrical detection to multilayer copper-clad plate using four line low-resistances, checks, qualified to complete two-sided aluminium
The making of substrate.
Embodiment 3：
A kind of manufacture craft of double-side aluminum printed board proposed by the present invention, comprises the following steps：
(1) two blocks of aluminium sheets are taken, the surface of aluminium sheet is subjected to electrochemical oxidation, the thickness for obtaining oxide-film is at least 25 μm
Aluminium sheet, can prevent double-side aluminum printed board from layering bubble operationally occur, then two blocks of aluminium sheets are combined into one piece of aluminium combination
Plate；
(2) conducting filler is taken, after conducting filler is handled with coupling agent, is sufficiently stirred for modified epoxy
Mixing, filtering, is evenly coated in aluminium board both sides, is dried 10 minutes in 150 DEG C, and thermally conductive insulating layer is formed on aluminium board,
It can be very good to be radiated when double-side aluminum printed board can be made to work, then conductive layer covered in thermally conductive insulating layer both sides；
(3) first time drilling is carried out using rig using phenolic aldehyde backing plate, is put into flash removed solution and removes drilling for the first time
In burr, taking-up water-filling of going forward side by side washes；
(4) by the insulating resin with aluminium sheet similar thermal expansion coefficient be filled in for the first time drill in, can prevent aluminium sheet it
Between be electrically connected with, so that the short circuit of double-side aluminum printed board is avoided, so as to extend the service life of double-side aluminum printed board；
(5) aluminium board, insulating barrier and conductive layer carry out under 150psi pressure to pressing 20 minutes, aluminium board it
Between the phenomenon without layering bubble, carry out high pressure resistant test to it, no superleak problem, then baking sheet 3.5 hours at 160 DEG C；
(6) second is carried out in insulating resin hole to drill, and carry out heavy copper on the electrically conductive and in drilling for second；
(7) dry film paste is taken on the copper face of conductive layer, and carries out film aligning, exposure, development；
(8) copper face and second of drilling to conductive layer carries out copper facing, and tin plating, etching removes dry film；
(9) silk-screen solder mask；
(10) silk-screen character, and conductive layer is surface-treated；
(11) milling profile, carries out electrical detection to multilayer copper-clad plate using four line low-resistances, checks, qualified to complete two-sided aluminium
The making of substrate.
Finally illustrate, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although with reference to compared with
The present invention is described in detail good embodiment, it will be understood by those within the art that, can be to skill of the invention
Art scheme is modified or equivalent substitution, and without departing from the objective and scope of technical solution of the present invention, it all should cover at this
In the right of invention.
Claims (6)
1. a kind of manufacture craft of double-side aluminum printed board, it is characterised in that comprise the following steps：
(1) two blocks of aluminium sheets are taken, one piece of aluminium board is combined into after the surface of aluminium sheet is carried out into electrochemicial oxidation；
(2) both sides of aluminium board are covered into thermally conductive insulating layer, and conductive layer is covered in thermally conductive insulating layer both sides；
(3) first time drilling is carried out using rig using phenolic aldehyde backing plate, is put into flash removed solution and removes in drilling for the first time
Burr, takes out, washing；
(4) insulating resin is filled in drilling for the first time；
(5) aluminium board, insulating barrier and conductive lamination are merged and carries out baking sheet；
(6) second is carried out in insulating resin hole to drill, and carry out heavy copper on the electrically conductive and in drilling for second.
2. the manufacture craft of double-side aluminum printed board as claimed in claim 1, it is characterised in that step (1) electricity
The thickness of the oxide-film of chemical oxidation is at least 25 μm.
3. the manufacture craft of double-side aluminum printed board as claimed in claim 1, it is characterised in that step (2) described heat conduction is exhausted
Edge layer includes modified epoxy and conducting filler.
4. the manufacture craft of double-side aluminum printed board as claimed in claim 3, it is characterised in that the modified epoxy bag
Epoxy resin and elastomer are included, the elastomer includes butyral, polyurethane and acrylate.
5. the manufacture craft of double-side aluminum printed board as claimed in claim 1, it is characterised in that step (5) pressing is adopted
Pressure is 135psi~150psi, and processing time is 10~20 minutes.
6. the manufacture craft of double-side aluminum printed board as claimed in claim 1, it is characterised in that step (5) described baking sheet
Temperature is 160 DEG C, and the time is 2.5~3.5 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710496937.6A CN107046765A (en) | 2017-06-23 | 2017-06-23 | The manufacture craft of double-side aluminum printed board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710496937.6A CN107046765A (en) | 2017-06-23 | 2017-06-23 | The manufacture craft of double-side aluminum printed board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107046765A true CN107046765A (en) | 2017-08-15 |
Family
ID=59546474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710496937.6A Pending CN107046765A (en) | 2017-06-23 | 2017-06-23 | The manufacture craft of double-side aluminum printed board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107046765A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108718482A (en) * | 2018-05-17 | 2018-10-30 | 惠州中京电子科技有限公司 | A method of improving the service life of circuit board processing device supplies |
| CN108987658A (en) * | 2018-03-20 | 2018-12-11 | 东莞市若美电子科技有限公司 | Complex copper aluminium double-side cell protection board manufacture craft |
| CN111263526A (en) * | 2020-03-23 | 2020-06-09 | 西安微电子技术研究所 | Dry-type milling method for aluminum-based printed circuit board |
-
2017
- 2017-06-23 CN CN201710496937.6A patent/CN107046765A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108987658A (en) * | 2018-03-20 | 2018-12-11 | 东莞市若美电子科技有限公司 | Complex copper aluminium double-side cell protection board manufacture craft |
| CN108718482A (en) * | 2018-05-17 | 2018-10-30 | 惠州中京电子科技有限公司 | A method of improving the service life of circuit board processing device supplies |
| CN111263526A (en) * | 2020-03-23 | 2020-06-09 | 西安微电子技术研究所 | Dry-type milling method for aluminum-based printed circuit board |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170815 |