CN104078241A - Electrode foil expansion face corrosion method for alternating-current motor starting capacitor - Google Patents
Electrode foil expansion face corrosion method for alternating-current motor starting capacitor Download PDFInfo
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- CN104078241A CN104078241A CN201410319621.6A CN201410319621A CN104078241A CN 104078241 A CN104078241 A CN 104078241A CN 201410319621 A CN201410319621 A CN 201410319621A CN 104078241 A CN104078241 A CN 104078241A
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Abstract
The invention discloses an electrode foil expansion face corrosion method for an alternating-current motor starting capacitor. The electrode foil expansion face corrosion method includes the steps of electronic aluminum foil selection and electronic aluminum foil corrosion and is characterized in that electronic aluminum foil is medium and high voltage electronic aluminum foil with the thickness of 85 microns; the electronic aluminum foil corrosion step includes pretreatment and first washing, first-stage hole forming corrosion and second washing, second-stage hole expanding corrosion and third washing, aftertreatment, fourth washing and drying. The corrosion holes of the corrosion foil produced with the production method are large in hole diameter and are through, when the formed foil obtained after formation is used for the alternating-current motor starting capacitor, the formed foil can be fully soaked in electrolyte solution, the capacitor is low in temperature and small in loss in the using process, the applicable formation voltage ranges from 120 Vf to 660 Vf, the capacitor is sensitive in frequency response, small in loss and fast in heat dissipation in the using process, the applicable voltage is wide in range, and the performance is stable.
Description
Technical field
The present invention relates to a kind of alternating current motor start-up capacitance device electrode foil extending corrosion method, belong to electrode foil corrosion technology field.
Background technology
Alternating current motor start-up capacitance device is widely used in the motor start-up operation of the electrical equipment such as refrigerator, washing machine, air-conditioning, electric fan, smoke exhaust ventilator, bread producing machine, shredder, dishwasher and equipment.
Alternating current motor start-up capacitance device is non-polar aluminum electrolytic capacitor, makes motor under lower starting current, obtain higher detent torque.Alternating current motor start-up capacitance device both positive and negative polarity all adopts anode foils, because its anode foils alternation is under positive negative potential, so require the features such as its anode foils frequency response is sensitive, loss is little, rapid heat dissipation.Correspondingly, require the pit of alternating current motor start-up capacitance device electrode foil to be large aperture, to run through type, be beneficial to the abundant dipping of electrolyte, reduce the temperature rise in capacitor use procedure, and reduce the wastage.
At present, the miniaturization of electronic component volume is more and more obvious, for aluminium electrolytic capacitor, realize volume miniaturization, and the positive pole aluminium foil unit's static capacity that just need to serve as capacitor anode improves.Principle formula by capacitor: can find out: the dielectric coefficient ε of medium is constant, therefore to improve static capacity Cap, need to improve the surface area S of electrode, a kind of disclosed mesohigh electrode foil corrosion extended surface method in Chinese patent CN 102061508 A, caustic solution more complicated, and common caustic solution cannot meet that the frequency response of mesohigh electrode foil is sensitive, loss is little, the requirement of rapid heat dissipation, needs the corresponding corrosion technology that has of innovation to realize.
Summary of the invention
The object of the invention is to for deficiency of the prior art, the extending corrosion method of a kind of alternating current motor start-up capacitance device electrode foil is provided, realize large aperture, run through the caustic solution of type etched foil.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of alternating current motor start-up capacitance device electrode foil extending corrosion method, comprise and select electric aluminum foil and electronic aluminum foil corrosion, its innovative point is: described electric aluminum foil is that thickness is the mesohigh electric aluminum foil of 85 μ m; Described electronic aluminum foil corrosion step comprises that pre-treatment and the first washing, one-level are sent out pitting corrosion and the second washing, secondary chambering corrosion are washed and dry processing with the 3rd washing, reprocessing, the 4th successively.
Further, described electronic aluminum foil corrosion step is specially:
(1) pre-treatment and the first washing: aluminium foil is immersed in salpeter solution, and concentration of volume percent is 8～12%, and temperature is 75～85 DEG C, soak time is 1～3 minute, aluminium foil after pre-treatment is washed, and washing temperature is normal temperature, and washing time is 1～3 minute;
(2) one-level is sent out pitting corrosion and the second washing: by the aluminium foil after the first washing, be placed in mass percent 1～4% hydrochloric acid and mass percent 18～28% sulfuric acid mixture liquids, at 72～90 DEG C of temperature, apply 150～280mA/cm
2direct current, electrolytic corrosion 45～80 seconds, the aluminium foil that one-level is sent out after pitting corrosion is washed, washing temperature is normal temperature, washing time is 1～3 minute;
(3) secondary chambering corrosion and the 3rd washing: by the aluminium foil after the second washing, be placed in and contain 0.01～0.30g/L additive and mass percent 2.5～7% hydrochloric acid solutions, at 75～92 DEG C of temperature, apply 15～45mA/cm
2direct current, electrolytic corrosion 350～600 seconds, washes the aluminium foil after secondary chambering corrosion, washing temperature is normal temperature, washing time is 1～3 minute;
(4); Reprocessing: by the aluminium foil after the 3rd washing, the percent by volume that is placed in 45～65 DEG C is 7～10% salpeter solutions, chemical treatment 90～180 seconds;
(5) the 4th washings: the aluminium foil through reprocessing is washed, and washing temperature is normal temperature, and washing time is 1～3 minute;
(6) dry processing: by the aluminium foil after the 4th washing, at 70～130 DEG C of temperature, carry out 2～3 minutes drying and processings.
Further, the described first to the 3rd washing institute water is running water, and the 4th washing institute water is deionized water.
Further, described pre-treatment and the first washing, the mass percent concentration of preparing salpeter solution nitric acid used in post-processing step are 65～68%.
Further, the additive that in described secondary chambering corrosion and the 3rd water-washing step, secondary chambering corrosion is used is that molecular weight is 20000～100000 organic substance.
Further, described organic substance is polystyrene type anion active agent.
Further, the etched foil that described electrode foil extending corrosion method is produced, applicable formation voltage scope is 120～660Vf.
Beneficial effect of the present invention is as follows:
(1) production method of the present invention is produced etched foil pit aperture is large and for running through type, electrolyte dipping is fully during for alternating current motor start-up capacitance device for Waste Acid From Hua Cheng Foil after changing into, in capacitor use procedure, temperature is low, loss is little, applicable formation voltage scope is 120～660Vf, the response of use procedure medium frequency is sensitive, loss is little, rapid heat dissipation, is suitable for voltage span large, stable performance.
(2) method of the present invention has reduced the conventional operation of in the past processing, and the properties of product that obtain obviously improve compared to prior art, have reached on the basis of energy savings and cost, have improved production efficiency.
(3) in production method of the present invention, the concentration of the solution such as the nitric acid selected, hydrochloric acid, sulfuric acid is all the optium concentrations that use after test, for production performance stable provides guarantee.
(4) additive that method of the present invention increases in secondary chambering corrosion step, suppress the surface dissolution of aluminium foil and guaranteed the concentrated expansion that acts on pit of reaming corrosion electric weight, more ensure that the aperture of reaming pit is large and for running through type, further for the outstanding performance of product provides prerequisite.
brief description of the drawings:
Below in conjunction with specific embodiments and the drawings, technical scheme of the present invention is elaborated.
Fig. 1 is the embodiment of the present invention 3 corroding electrode paper tinsel surface electronic microscope scintigrams.
Fig. 2 is comparative example corroding electrode paper tinsel surface electronic microscope scintigram of the present invention.
Fig. 3 is the embodiment of the present invention 3 corroding electrode paper tinsel cross section electron microscope scanning figure.
Fig. 4 is comparative example corroding electrode paper tinsel of the present invention cross section electron microscope scanning figure.
Embodiment
embodiment 1
Be in 10% salpeter solution by the electric aluminum foil of thickness 85 μ m in percent by volume, at 77 DEG C, soak 2 minutes, take out and wash for the first time 2 minutes;
By for the first time washing aluminium foil in mass percent 2.8% hydrochloric acid and mass percent 25% sulfuric acid mixture liquid, at 83 DEG C, current density 250mA/cm
2condition under, DC electrolysis corrosion 50 seconds, takes out and washes for the second time 2 minutes;
Be in 5.5% hydrochloric acid solution by the aluminium foil of washing for the second time in the mass percent that contains 0.05g/L polystyrene type anion active agent, at 80 DEG C, current density 20mA/cm
2condition under, DC electrolysis corrosion 520 seconds, takes out and washes for the third time 2 minutes;
By for the third time washing aluminium foil in percent by volume 8% salpeter solution 60 DEG C soak 120 seconds, takes out the 4th time wash 2 minutes;
By the aluminium foil of the 4th washing, in 90～110 DEG C of baking ovens, dry 2 minutes.
embodiment 2
Be in 12% salpeter solution by the electric aluminum foil of thickness 85 μ m in percent by volume, at 80 DEG C, soak 105 seconds, take out and wash for the first time 2 minutes;
By for the first time washing aluminium foil in mass percent 3.5% hydrochloric acid and mass percent 20% sulfuric acid mixture liquid, at 85 DEG C, current density 220mA/cm
2condition under, DC electrolysis corrosion 45 seconds, takes out and washes for the second time 2 minutes;
Be in 3.5% hydrochloric acid solution by the aluminium foil of washing for the second time in the mass percent that contains 0.02g/L polystyrene type anion active agent, at 78 DEG C, current density 30mA/cm
2condition under, DC electrolysis corrosion 450 seconds, takes out and washes for the third time 2 minutes;
By for the third time washing aluminium foil in percent by volume 8% salpeter solution 55 DEG C soak 105 seconds, takes out the 4th time wash 2 minutes;
By the aluminium foil of the 4th washing, in 90～110 DEG C of baking ovens, dry 2 minutes.
embodiment 3
Be in 8% salpeter solution by the electric aluminum foil of thickness 85 μ m in percent by volume, at 83 DEG C, soak 2 minutes, take out and wash for the first time 2 minutes;
By for the first time washing aluminium foil in mass percent 3.5% hydrochloric acid and mass percent 22% sulfuric acid mixture liquid, at 82 DEG C, current density 180mA/cm
2condition under, DC electrolysis corrosion 50 seconds, takes out and washes for the second time 2 minutes;
Be in 4.5% hydrochloric acid solution by the aluminium foil of washing for the second time in the mass percent that contains 0.10g/L polystyrene type anion active agent, at 82 DEG C, current density 22mA/cm
2condition under, DC electrolysis corrosion 480 seconds, takes out and washes for the third time 2 minutes;
By for the third time washing aluminium foil in percent by volume 10% salpeter solution 50 DEG C soak 120 seconds, takes out the 4th time wash 2 minutes;
By the aluminium foil of the 4th washing, in 90～110 DEG C of baking ovens, dry 2 minutes.
Embodiment 4
Be in 8% salpeter solution by the electric aluminum foil of thickness 85 μ m in percent by volume, at 80 DEG C, soak 2 minutes, take out and wash for the first time 2 minutes;
By for the first time washing aluminium foil in mass percent 3.2% hydrochloric acid and mass percent 18% sulfuric acid mixture liquid, at 85 DEG C, current density 205mA/cm
2condition under, DC electrolysis corrosion 50 seconds, takes out and washes for the second time 2 minutes;
Be in 3.5% hydrochloric acid solution by the aluminium foil of washing for the second time in the mass percent that contains 0.20g/L polystyrene type anion active agent, at 85 DEG C, current density 25mA/cm
2condition under, DC electrolysis corrosion 480 seconds, takes out and washes for the third time 2 minutes;
By for the third time washing aluminium foil in percent by volume 8% salpeter solution 60 DEG C soak 120 seconds, takes out the 4th time wash 2 minutes;
By the aluminium foil of the 4th washing, in 90～110 DEG C of baking ovens, dry 2 minutes.
Comparative example
Comparative example is existing caustic solution.
Be in 20% sulfuric acid solution by the electric aluminum foil of thickness 85 μ m in mass percent, at 75 DEG C, soak 2 minutes, take out and wash for the first time 2 minutes;
By for the first time washing aluminium foil in mass percent 2.5% hydrochloric acid and mass percent 30% sulfuric acid mixture liquid, at 73 DEG C, current density 230mA/cm
2condition under, DC electrolysis corrosion 55 seconds, takes out and washes for the second time 2 minutes;
Be in 9% salpeter solution by the aluminium foil of washing for the second time in the mass percent that contains 0.33g/L polystyrene type anion active agent, at 72 DEG C, current density 45mA/cm
2condition under, DC electrolysis corrosion 425 seconds, takes out and washes for the third time 2 minutes;
By for the third time washing aluminium foil in mass percent 6% sulfuric acid solution 50 DEG C soak 120 seconds, takes out the 4th time wash 2 minutes;
By the aluminium foil of the 4th washing, in 90～110 DEG C of baking ovens, dry 2 minutes.
Caustic solution of the present invention and existing caustic solution comparative test result are as shown in table 1 below:
Table 1
Contrast known, the corroding electrode paper tinsel that adopts method of the present invention to manufacture, its tg δ (loss), resistance to water are better than the corroding electrode paper tinsel that conventional method is manufactured, its pit is that type is run through in large aperture simultaneously, be beneficial to the thorough impregnation of electrolyte in capacitor, reduced the temperature rise in loss and the capacitor use procedure of alternating current motor start-up capacitance device.Although the corroding electrode paper tinsel that the corroding electrode paper tinsel bending intensity that the present invention manufactures is manufactured lower than conventional method, its intensity can meet the requirement of alternating current motor start-up capacitance device to bending intensity completely.
Compared with conventional method, the corroding electrode paper tinsel that adopts method of the present invention to manufacture, is more suitable for for the manufacture of alternating current motor start-up capacitance device.
Claims (7)
1. an alternating current motor start-up capacitance device electrode foil extending corrosion method, comprises and selects electric aluminum foil and electronic aluminum foil corrosion, it is characterized in that: described electric aluminum foil is that thickness is the mesohigh electric aluminum foil of 85 μ m; Described electronic aluminum foil corrosion step comprises that pre-treatment and the first washing, one-level are sent out pitting corrosion and the second washing, secondary chambering corrosion are washed and dry processing with the 3rd washing, reprocessing, the 4th.
2. alternating current motor start-up capacitance device electrode foil extending corrosion method according to claim 1, is characterized in that: described electronic aluminum foil corrosion step is specially:
(1) pre-treatment and the first washing: aluminium foil is immersed in salpeter solution, and concentration of volume percent is 8～12%, and temperature is 75～85 DEG C, soak time is 1～3 minute, aluminium foil after pre-treatment is washed, and washing temperature is normal temperature, and washing time is 1～3 minute;
(2) one-level is sent out pitting corrosion and the second washing: by the aluminium foil after the first washing, be placed in mass percent 1～4% hydrochloric acid and mass percent 18～28wt% sulfuric acid mixture liquid, at 72～90 DEG C of temperature, apply 150～280mA/cm
2direct current, electrolytic corrosion 45～80 seconds, the aluminium foil that one-level is sent out after pitting corrosion is washed, washing temperature is normal temperature, washing time is 1～3 minute;
(3) secondary chambering corrosion and the 3rd washing: by the aluminium foil after the second washing, be placed in and contain 0.01～0.30g/L additive and mass percent 2.5～7% hydrochloric acid solutions, at 75～92 DEG C of temperature, apply 15～45mA/cm
2direct current, electrolytic corrosion 350～600 seconds, washes the aluminium foil after secondary chambering corrosion, washing temperature is normal temperature, washing time is 1～3 minute;
(4) reprocessing: by the aluminium foil after the 3rd washing, the percent by volume that is placed in 45～65 DEG C is 7～10% salpeter solutions, chemical treatment 90～180 seconds;
(5) the 4th washings: the aluminium foil through reprocessing is washed, and washing temperature is normal temperature, and washing time is 1～3 minute;
(6) dry processing: by the aluminium foil after the 4th washing, at 70～130 DEG C of temperature, carry out 2～3 minutes drying and processings.
3. alternating current motor start-up capacitance device electrode foil extending corrosion method according to claim 1 and 2, is characterized in that: the described first to the 3rd washing institute water is running water, and the 4th washing institute water is deionized water.
4. alternating current motor start-up capacitance device electrode foil extending corrosion method according to claim 2, is characterized in that: the mass percent concentration of preparing salpeter solution nitric acid used in described pre-treatment and the first washing, post-processing step is 65～68%.
5. alternating current motor start-up capacitance device electrode foil extending corrosion method according to claim 2, is characterized in that: the additive that in described secondary chambering corrosion and the 3rd water-washing step, secondary chambering corrosion is used is that molecular weight is 20000～100000 organic substance.
6. alternating current motor start-up capacitance device electrode foil extending corrosion method according to claim 5, is characterized in that: described organic substance is polystyrene type anion active agent.
7. alternating current motor start-up capacitance device electrode foil extending corrosion method according to claim 1, is characterized in that: the etched foil that described electrode foil extending corrosion method is produced, applicable formation voltage scope is 120～660Vf.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410319621.6A CN104078241A (en) | 2014-07-07 | 2014-07-07 | Electrode foil expansion face corrosion method for alternating-current motor starting capacitor |
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| CN201410319621.6A CN104078241A (en) | 2014-07-07 | 2014-07-07 | Electrode foil expansion face corrosion method for alternating-current motor starting capacitor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105895375A (en) * | 2014-12-05 | 2016-08-24 | 江苏荣生电子有限公司 | Manufacture method of electrode foil with through hole |
| CN107123549A (en) * | 2017-04-18 | 2017-09-01 | 扬州宏远电子有限公司 | A kind of pre-treating method for improving solid-state capacitor electrode aluminium foil specific volume |
| CN113897651A (en) * | 2021-08-23 | 2022-01-07 | 南通南辉电子材料股份有限公司 | Method for manufacturing electrode foil for aluminum electrolytic capacitor with wide temperature, low impedance, shrinkage, large ripple current resistance and long service life |
-
2014
- 2014-07-07 CN CN201410319621.6A patent/CN104078241A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105895375A (en) * | 2014-12-05 | 2016-08-24 | 江苏荣生电子有限公司 | Manufacture method of electrode foil with through hole |
| CN107123549A (en) * | 2017-04-18 | 2017-09-01 | 扬州宏远电子有限公司 | A kind of pre-treating method for improving solid-state capacitor electrode aluminium foil specific volume |
| CN113897651A (en) * | 2021-08-23 | 2022-01-07 | 南通南辉电子材料股份有限公司 | Method for manufacturing electrode foil for aluminum electrolytic capacitor with wide temperature, low impedance, shrinkage, large ripple current resistance and long service life |
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