CN102181866A - Method for roughening surface of aluminum substrate - Google Patents
Method for roughening surface of aluminum substrate Download PDFInfo
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- CN102181866A CN102181866A CN 201110093705 CN201110093705A CN102181866A CN 102181866 A CN102181866 A CN 102181866A CN 201110093705 CN201110093705 CN 201110093705 CN 201110093705 A CN201110093705 A CN 201110093705A CN 102181866 A CN102181866 A CN 102181866A
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- aluminium base
- base surface
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- surface coarsening
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Abstract
The invention relates to field of PCB (Printed Circuit Board) manufacturing, in particular to a method for roughening the surface of an aluminum substrate. The method comprise a series of steps of oil removing-water washing-liquid medicine spraying and etching-water washing-alkali washing-drying and the like, thus roughening the surface of the aluminum substrate. In the method, the liquid medicine prepared by hydrochloric acid and oxidant is utilized for roughening the surface of the aluminum substrate by the spraying and etching manner, so that the surface of the aluminum substrate can be roughened sufficiently and uniformly, and further the aluminum substrate can be combined with a PP sheet well by pressing, and the phenomena of board exposition and layering in the subsequent production caused by poor combination between the aluminum substrate and the PP sheet can be avoided effectively; and compared with the existing method for roughening the aluminum plate, the method has the advantages that the operation is simple and the cost is low.
Description
Technical field
The present invention relates to PCB and make the field, be specifically related to the aluminium base surface coarsening treatment process in a kind of high-conductivity printed circuit board (PCB).
Background technology
Modern electronic product develops to miniaturization, high direction integrated, high performance day by day, and the power density of printed circuit board is also increasing, wiring board heat radiation becoming a great problem.Interior aluminium base and the PP(resin of adopting of industry) sheet, Copper Foil, steel plate pressing are made high-conductivity printed circuit board (PCB) and are efficiently solved the wiring board heat dissipation problem.Before aluminium base and the pressing of PP sheet, need roughening treatment is done on the aluminium base surface, to prevent combining a series of problems such as the bad plate bursting that is caused, layering, anti-high pressure difficulty with the PP sheet because of aluminium base in the production process.At present, the aluminium base method for coarsening surface has: modes such as nog plate, wire drawing, anodic oxidation treatment, nanometer processing.For nog plate, wire drawing, anodic oxidation treatment mode, its alligatoring effect is all undesirable, and nanometer processing mode cost is higher, and flow process complexity, production cycle are long.
Summary of the invention
The problem that the present invention need solve provides the low and effective aluminium base surface coarsening treatment process of a kind of cost.
For addressing the above problem, the technical scheme that the present invention takes is: a kind of aluminium base surface coarsening treatment process is provided, the steps include:
(1) at first aluminium base is carried out oil removal treatment, clean with clear water afterwards;
(2) by the spray mode erosion is washed on the aluminium base surface with the liquid medicine of hydrochloric acid and oxygenant configuration, adopt clear water to clean aluminium base afterwards again;
(3) adopt alkaline medicinal liquid to clean aluminium base, clean with clear water afterwards;
(4) oven dry.
Concrete, step (2) is described washes that concentration of hydrochloric acid is 1.5-2.5 g/l in the liquid medicine that erosion adopts, and oxidant concentration is 15--30g/l; The described spray pressure-controlling of erosion liquid medicine of washing is at 1.0-2.0 kg/cm
2, service temperature is controlled at 40 ± 10 ℃; Wherein, oxygenant comprises sodium chlorate, sodium-chlor, ammonium chloride and additive.
Concrete, in the deoiling step, employing concentration is that the sodium hydroxide solution of 0.6-1.2g/l is realized by the spray mode, sodium hydroxide solution spray pressure-controlling is at 1.0-2.0 kg/cm
2
Concrete, the middle employing of step (3) concentration is that the sodium hydroxide solution of 5%-10% cleans aluminium base by the spray mode, alkaline medicinal liquid spray pressure-controlling is at 1.0-2.0 kg/cm
2
The mode that the method for the invention is washed erosion by the liquid medicine spray is carried out alligatoring to the aluminium base surface, can make the aluminium base abundant and even alligatoring in surface, make its can with the good pressing of PP sheet, prevent that effectively aluminium base from combining bad plate bursting, the demixing phenomenon that causes in the subsequent production with PP, improve the high-conductivity printed circuit board (PCB) total quality, opened up surface of aluminum plate processing processing range.
The method of the invention is simple to operate with respect to existing aluminium base method of roughening, and cost is low, has improved production efficiency greatly.
Embodiment
For the ease of those skilled in the art's understanding, the present invention is further described in detail below in conjunction with specific embodiment.
The disclosed main flow process of aluminium base surface coarsening treatment process is: oil removing-washing-liquid medicine spray is washed erosion-washing-alkali cleaning-washing-oven dry.
The oil removing operation.At first adopt concentration be 0.6-1.2g/l sodium hydroxide solution by the spray mode to the pcb board surface degreasing.In the oil removing operation, sodium hydroxide solution spray pressure-controlling is at 1.0-2.0 kg/cm
2, temperature is controlled at 35 ± 5 ℃, and aluminium base is carried out oil removal treatment, removes the booty and the oil stain on aluminium base surface, guarantees the cleaning of plate face.
Acid liquid medicine is washed the erosion operation.After the plate face is cleaned, adopt the liquid medicine of hydrochloric acid and oxygenant configuration erosion to be washed on the aluminium base surface by the spray mode.In the liquid medicine, concentration of hydrochloric acid is controlled at 1.5-2.5 g/l, and oxidant concentration is controlled at 15--30g/l, and the spray pressure-controlling of washing erosion liquid medicine is at 1.0-2.0 kg/cm
2, service temperature is controlled at 40 ± 10 ℃.Wherein, oxygenant comprises the additive of sodium chlorate, sodium-chlor, ammonium chloride and a complexing action.Above-mentioned chemical concentration and temperature cooperate spray pressure to carry out alligatoring to the pcb board surface, and alligatoring is even, and the alligatoring face that forms after alligatoring peak height, peak width are suitable.
Caustic wash process.Adopting concentration once more is that the sodium hydroxide solution of 5%-10% cleans aluminium base by the spray mode, and alkaline medicinal liquid spray pressure-controlling is at 1.0-2.0 kg/cm
2, service temperature is controlled at 50 ± 10 ℃.This is that peracidity liquid medicine will occur aberration (brown) on the aluminium base surface after washing erosion because certain oil stain is contained on the aluminium base surface, therefore, needs to adopt caustic wash process to remove this aberration.
After oil removing, acid liquid medicine are washed erosion, each operation of alkali cleaning water-washing step is arranged all, water-washing step mainly is a liquid medicine of cleaning the last process of leaving on the plate surface, avoids the liquid medicine interreaction, influences the next procedure effect.
With the plank oven dry, finish alligatoring at last.
By the described method of present embodiment aluminium base is carried out roughening treatment, the analysis of cutting into slices, conclusion sees the following form: (standard reference Copper Foil roughness IPC standard)
| Test event | Required value (UM) | Measured value (UM) | Judge |
| Aluminium sheet alligatoring face peak height | ≥6.5 | 8.37-8.87 | ACC(is qualified) |
| Aluminium sheet alligatoring face peak width | ≤15 | 6.48 | ACC(is qualified) |
Adopt the aluminium base after the above-mentioned roughening treatment, behind PP, Copper Foil, steel plate pressing successively, carry out the cold cycling shock test, test conditions is as follows:
Test board was put into high temperature ［+125 ℃ (257 F) ］ 15 minutes;
The nigration plate is to end incubator, and transfer time must not be above 2 minutes;
Test board was put into cryostat ［ 65 ℃ (85 F) ］ 15 minutes;
The nigration plate is to high-temperature cabinet, and transfer time must not be above 2 minutes;
More than for finishing once circulation;
Repeat above-mentioned circulation totally 100 times, must not interrupt.
Test-results: no plate bursting layering and other bad phenomenon produce.
The foregoing description only is the preferred implementation of the method for the invention, and in addition, the present invention can also have other implementations.That is to say that under the prerequisite that does not break away from the present invention's design, any conspicuous replacement and subtle change all should fall within protection scope of the present invention.
Claims (8)
1. an aluminium base surface coarsening treatment process the steps include:
(1) at first aluminium base is carried out oil removal treatment, clean with clear water afterwards;
(2) by the spray mode erosion is washed on the aluminium base surface with the liquid medicine of hydrochloric acid and oxygenant configuration, adopt clear water to clean aluminium base afterwards again;
(3) adopt alkaline medicinal liquid to clean aluminium base, clean with clear water afterwards;
(4) oven dry.
2. aluminium base surface coarsening treatment process according to claim 1 is characterized in that: step (2) is described washes that concentration of hydrochloric acid is 1.5-2.5 g/l in the liquid medicine that erosion adopts, and oxidant concentration is 15--30g/l.
3. aluminium base surface coarsening treatment process according to claim 2 is characterized in that: the spray pressure-controlling of washing erosion liquid medicine described in the step (2) is at 1.0-2.0 kg/cm
2, service temperature is controlled at 40 ± 10 ℃.
4. aluminium base surface coarsening treatment process according to claim 3, it is characterized in that: described oxygenant comprises sodium chlorate, sodium-chlor, ammonium chloride and additive.
5. aluminium base surface coarsening treatment process according to claim 1 is characterized in that: the middle employing of step (1) concentration is that the sodium hydroxide solution of 0.6-1.2g/l passes through the oil removing of spray mode.
6. aluminium base surface coarsening treatment process according to claim 5 is characterized in that: sodium hydroxide solution spray pressure-controlling is at 1.0-2.0 kg/cm in the deoiling step
2
7. aluminium base surface coarsening treatment process according to claim 1 is characterized in that: alkaline medicinal liquid described in the step (3) is that concentration is the sodium hydroxide solution of 5%-10%.
8. aluminium base surface coarsening treatment process according to claim 7 is characterized in that: step (3) neutral and alkali liquid medicine cleans aluminium base by the spray mode, and alkaline medicinal liquid spray pressure-controlling is at 1.0-2.0 kg/cm
2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110093705 CN102181866A (en) | 2011-04-14 | 2011-04-14 | Method for roughening surface of aluminum substrate |
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| CN 201110093705 CN102181866A (en) | 2011-04-14 | 2011-04-14 | Method for roughening surface of aluminum substrate |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102497734A (en) * | 2011-11-30 | 2012-06-13 | 景旺电子（深圳）有限公司 | Processing method of aluminum surface of aluminum base copper clad laminate |
| CN102548066A (en) * | 2012-02-08 | 2012-07-04 | 惠州中京电子科技股份有限公司 | PCB (Printed Circuit Board) surface treatment technology |
| CN103628110A (en) * | 2013-12-05 | 2014-03-12 | 景旺电子科技(龙川)有限公司 | Treatment method for preventing anode oxidation board from pressing layering |
| CN104270893A (en) * | 2014-08-27 | 2015-01-07 | 无锡长辉机电科技有限公司 | PCB surface processing technology |
| CN104309054A (en) * | 2013-10-31 | 2015-01-28 | 比亚迪股份有限公司 | Preparation method of metal-resin composite, and metal-resin composite |
| CN109435418A (en) * | 2018-11-19 | 2019-03-08 | 深圳市五株科技股份有限公司 | A kind of processing method of organic material |
| CN110468413A (en) * | 2019-09-10 | 2019-11-19 | 四会富仕电子科技股份有限公司 | A kind of method of Metal Substrate roughing in surface |
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| CN101205614A (en) * | 2006-12-22 | 2008-06-25 | 深圳富泰宏精密工业有限公司 | Chemical etching liquor for aluminium and aluminum alloy |
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2011
- 2011-04-14 CN CN 201110093705 patent/CN102181866A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101205614A (en) * | 2006-12-22 | 2008-06-25 | 深圳富泰宏精密工业有限公司 | Chemical etching liquor for aluminium and aluminum alloy |
Non-Patent Citations (2)
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| 《现代涂料与涂装》 20071231 王恩生，杨波 铝及铝合金的涂装前处理 21-26 1-8 第10卷, 第12期 2 * |
| 《表面技术》 20011031 吕安敏 铝合金的阳极氧化新工艺 46-49 1-8 第30卷, 第5期 2 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102497734A (en) * | 2011-11-30 | 2012-06-13 | 景旺电子（深圳）有限公司 | Processing method of aluminum surface of aluminum base copper clad laminate |
| CN102548066A (en) * | 2012-02-08 | 2012-07-04 | 惠州中京电子科技股份有限公司 | PCB (Printed Circuit Board) surface treatment technology |
| CN104309054A (en) * | 2013-10-31 | 2015-01-28 | 比亚迪股份有限公司 | Preparation method of metal-resin composite, and metal-resin composite |
| CN104309054B (en) * | 2013-10-31 | 2017-04-12 | 比亚迪股份有限公司 | Preparation method of metal-resin composite, and metal-resin composite |
| CN103628110A (en) * | 2013-12-05 | 2014-03-12 | 景旺电子科技(龙川)有限公司 | Treatment method for preventing anode oxidation board from pressing layering |
| CN104270893A (en) * | 2014-08-27 | 2015-01-07 | 无锡长辉机电科技有限公司 | PCB surface processing technology |
| CN109435418A (en) * | 2018-11-19 | 2019-03-08 | 深圳市五株科技股份有限公司 | A kind of processing method of organic material |
| CN110468413A (en) * | 2019-09-10 | 2019-11-19 | 四会富仕电子科技股份有限公司 | A kind of method of Metal Substrate roughing in surface |
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Application publication date: 20110914 |