CN109371455A - A kind of Neutral Electrolysis go flash liquid, this go the technique and application method of flash liquid - Google Patents
A kind of Neutral Electrolysis go flash liquid, this go the technique and application method of flash liquid Download PDFInfo
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- CN109371455A CN109371455A CN201811547399.XA CN201811547399A CN109371455A CN 109371455 A CN109371455 A CN 109371455A CN 201811547399 A CN201811547399 A CN 201811547399A CN 109371455 A CN109371455 A CN 109371455A
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- electrolysis
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- flash liquid
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F1/00—Electrolytic cleaning, degreasing, pickling or descaling
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Abstract
A kind of Neutral Electrolysis involved in the present invention removes flash liquid, including surfactant mixed liquor, solvent mixed liquor, and conductive ion mixture neutralizes agent solution, complexing agent mixture, buffer mixture.Because of the solvent mixed liquor using 50%, 20% conductive ion mixture, 10% surfactant mixed liquor, 18% neutralization agent solution, 0.1% complexing agent mixture matter, 0.1% mitigation agent composition, Neutral Electrolysis is made and removes flash liquid, because the Neutral Electrolysis goes the acid-base solution of flash liquid for neutrality, is conducive to reach safety, environmental protection and energy saving, and reduce use cost.Neutral acid-base solution will not cause the phenomenon that being layered to processed IC pin, reach and the lamination of processed IC pin is avoided to occur.It goes to carry out electrolysis processing inside flash liquid in use, needing for IC pin to be placed into Neutral Electrolysis, reach with effect easy to use.The present invention also has production, and the processing is simple, easy to operate function.
Description
[technical field]
Material is applied the present invention relates to the technical field of a kind of semiconductor components and devices, LED encapsulation technology and integrated circuit
Material, in particular to a kind of Neutral Electrolysis for semiconductor chip packaging plastic package process remove flash liquid, the technique for removing flash liquid
And application method.
[background technique]
With the need in the fields such as the continuous development and communication of information industry and artificial intelligence, Industry Control, consumer electronics
Ask vigorous, along with the stability of trend and products thereof of the highly integrated and product miniaturization of chip circuit, reliability
It is required that being increasingly stringenter.Obvious traditional packaging technology and its material used can not meet new requirement.However, in existing skill
In art after IC plastic packaging, to remove the plastic packaging material on the pin for remaining in IC, and use using IC as cathode, strong base electrolysis is gone
Flash liquid is electrolyte, then using stainless steel or titanium alloy as anode, under the action of voltage and current, then IC pin and plastic packaging material
Between gap generate gas, realize residual IC pin on plastic packaging material get rid of.During removing plastic packaging material herein, due to
The strong base solution is easy burn staff, or releases the skin of staff, and when use needs 3.2V to 3.5V's
Voltage, 90 amperes to 140 amperes of electric current could work, so that the hidden danger such as fire or burn are brought to factory, operator,
Cause to bring extremely unsafe hidden danger when operating to factory and operator.It is again molten due to having remained a large amount of strong bases after use
Liquid needs a large amount of acidic materials could discharge after neutralizing, and pollutes environment and use cost height so that having.Again because of institute
The strong base electrolyte stated has very strong corrosivity, so that layering is generated on the IC pin being removed between plastic packaging material, electricity
When plating, electroplating liquid medicine penetrates into IC, and chip circuit is caused to be corroded.
[summary of the invention]
In view of this, the purpose of the technology of the present invention is to solve the above-mentioned problems of the prior art and providing one kind has
Safety, environmental protection and energy saving reduce use cost, and the Neutral Electrolysis that the phenomenon that avoiding chip route from being corroded after plastic packaging occurs
Remove flash liquid.
Another technical purpose of the present invention also provides one kind, and with production, the processing is simple, and easy to operate Neutral Electrolysis removes flash
Liquid technique.
Another technical purpose of the present invention also provides a kind of with Neutral Electrolysis easy to use, and using low current
Go flash liquid application method.
Above-mentioned technical problem is solved thus, the technical solution in the present invention uses a kind of Neutral Electrolysis to remove flash liquid,
Including surfactant mixed liquor, solvent mixed liquor, conductive ion mixture neutralizes agent solution, complexing agent mixture, buffer
Mixture；The solvent mixed liquor composition quality ratio is 50%, and the conductive ion mixture quality component ratio is 20%,
The surfactant mixed liquor mass component ratio is 10%, and the neutralizer solution quality component ratio is 18%,
The complexing agent mixture mass component ratio is 0.1%, and the moderator mixture quality component ratio is 0.1%.
A kind of Neutral Electrolysis goes the manufacture craft of flash liquid, technical process are as follows: 1 kilogram of solvent mixed liquor is first taken to pour into instead
It answers inside kettle, reaction kettle revolving speed is set as 200 revs/min, and temperature is 40 °, is uniformly sufficiently stirred 1 in normal atmosphere (An)
Hour.
Then, then 0.1 kilogram of surfactant mixed liquor is taken slowly to pour reaction kettle into, reaction kettle revolving speed be set as 200 turns/
Minute, temperature is 40 °, is uniformly sufficiently stirred in normal atmosphere (An) 1 hour.
Then, then 0.01 kilogram of complexing agent mixture is taken slowly to pour reaction kettle into, reaction kettle revolving speed is set as 300 revs/min
Clock, temperature are 60 °, are uniformly sufficiently stirred in normal atmosphere (An) 1 hour.
Then, then 0.01 kilogram of inhibition agent composition is taken slowly to pour reaction kettle into, reaction kettle revolving speed is set as 300 revs/min
Clock, temperature are 60 °, are uniformly sufficiently stirred in normal atmosphere (An) 1 hour.
Then, then 0.4 kilogram of conductive ion mixture is taken slowly to pour reaction kettle into, reaction kettle revolving speed is set as 300 revs/min
Clock, temperature are 60 °, are uniformly sufficiently stirred 4 hours in the case of normal atmosphere (An), are cooled to room temperature.
Then, the value that the pH value of solution in quantitative response kettle is measured using PH, finally takes 0.48 kilogram of neutralization agent solution
It is poured slowly into inside reaction kettle in solution, so that the value of reaction kettle internal solution pH value is 7, as Neutral Electrolysis removes flash
Liquid.
A kind of Neutral Electrolysis goes the application method of flash liquid, application method process are as follows: first goes to overflow by the Neutral Electrolysis
Feed liquid is poured into electrolysis and goes inside flash groove, the Neutral Electrolysis go flash liquid storage capacity control electrolysis go flash groove depth three/
At two, voltage is adjusted to 2.0V to 3.0V, and electric current is adjusted to 20 amperes to 60 amperes；Then, defective material will be had
IC pin is placed in the electrolysis and goes inside flash groove to be handled, and in process of production, the electricity inside flash groove is removed in electrolysis
Solution goes the liquid level of flash liquid to decline, and directly adds to liquid original position.
It further limiting, the surfactant mixed liquor includes neopelex, lauryl sodium sulfate,
OP-10, nonyl phenolic group polyoxyethylene ether, fatty alcohol polyoxyethylene ether, cocoanut fatty acid diethanolamide, fatty glyceride,
Fatty acid sorbitan, coco-nut oil fatty acid diacetayl amide, isopropanol amide, dioctyl succinate disulfonate acid, FC-4430, F300,
WL400, GE-511, FS-10.
It further limits, the solvent mixed liquor includes water, PEG200, PEG600, ethylene glycol, glycerol, diethylene glycol
Monobutyl ether, dimethylformamide, dipropylene glycol, isopropanol, dimethyl sulfoxide, tripropylene glycol butyl ether, higher boiling benzyl oxide, ethylene glycol
Hexyl ether, diethylene glycol diethyl ether.
It further limits, the conductive ion mixture includes sodium carbonate, sodium bicarbonate, potassium carbonate, saleratus, phosphorus
Sour sodium, sodium dihydrogen phosphate, potassium sulfate, sodium sulphate, sodium peroxydisulfate.
It further limits, the neutralization agent solution includes sulfuric acid, hydrofluoric acid, phosphoric acid, cocinic acid, vegetable oil acid, hydrogen
Sodium oxide molybdena, potassium hydroxide, ethanol amine, diethanol amine, diethylenetriamine, ammonium hydrogen carbonate, thiocarbamide.
It further limiting, the complexing agent mixture includes EDTA, sodium gluconate, sodium potassium tartrate tetrahydrate, EDTA-2Na,
EDTA-4Na。
It further limits, the buffer mixture includes benzotriazole, mercapto benzothiazole, three nitrogen of methyl benzo
Azoles, imidazoline, sodium molybdate, sodium chromate, sodium metasilicate, sodium tungstate.
Advantageous effects of the invention: because the technical program use the solvent mixed liquor composition quality ratio for
50%, the conductive ion mixture quality component ratio is 20%, the surfactant mixed liquor mass component ratio
It is 10%, the neutralizer solution quality component ratio is 18%, and the complexing agent mixture mass component ratio is
0.1%, the moderator mixture quality component ratio is 0.1%, and constitutes the Neutral Electrolysis and remove flash liquid, neutrality electricity
Solution goes the acid-base solution of flash liquid for neutrality, so that avoiding in the prior art because strong alkali solution contacts work people when in use
Member's skin and cause burn staff, and fire hazard is occurred to factory, and need in a large amount of acidic materials and etc. skills
Art problem occurs, and will not pollute the environment of surrounding, therefore, reaches safety, environmental protection and energy saving, and reduce use cost.
At the same time, the neutral acid-base solution will not cause layering to processed IC pin and will not corrode IC core in plating
Piece, so reaching the phenomenon that avoiding chip route from being corroded after plastic packaging.When removing flash, need for IC pin to be placed into
Property electrolysis go inside flash liquid to carry out electrolysis processing, should not between IC pin and plastic packaging material gap using gas defective material
Removal, so having effect easy to use.At the same time, used voltage when flash is gone to be adjusted to 2.0V extremely
3.0V, electric current are adjusted to 20 amperes to 60 amperes, so that have the function using low current, are conducive to operate and use
Purpose.It is compared to each other with similar product in the prior art, the present invention also has production, and the processing is simple, easy to operate function.
To have further understanding to the purpose of the present invention, construction feature and its function, hereby embodiment is cooperated to be described in detail
It is as follows:
[specific embodiment]
In order to be clearer and more clear technical problems, technical solutions and advantages to be solved, tie below
Embodiment is closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only to explain
The present invention is not intended to limit the present invention.
Illustrate that a kind of Neutral Electrolysis removes flash liquid below with reference to embodiment comprising surfactant mixed liquor, solvent are mixed
Liquid is closed, conductive ion mixture neutralizes agent solution, complexing agent mixture, buffer mixture；The solvent mixed liquor is at sub-prime
Amount ratio is 50%, and the conductive ion mixture quality component ratio is 20%, the surfactant mixed liquor quality
Component ratio is 10%, and the neutralizer solution quality component ratio is 18%, the complexing agent mixture mass component
Ratio is 0.1%, and the moderator mixture quality component ratio is 0.1%.
The surfactant mixed liquor includes neopelex, lauryl sodium sulfate, OP-10, nonyl phenol
Base polyoxyethylene ether, fatty alcohol polyoxyethylene ether, cocoanut fatty acid diethanolamide, fatty glyceride, fatty acid sorb
It is smooth, coco-nut oil fatty acid diacetayl amide, isopropanol amide, dioctyl succinate disulfonate acid, FC-4430, F300, WL400, GE-
511, FS-10.
The solvent mixed liquor includes water, PEG200, PEG600, ethylene glycol, glycerol, diethylene glycol monobutyl ether, diformazan
Base formamide, dipropylene glycol, isopropanol, dimethyl sulfoxide, tripropylene glycol butyl ether, higher boiling benzyl oxide, glycol hexyl ether, diethyl two
Diethylene glycol diethyl ether.
The conductive ion mixture includes sodium carbonate, sodium bicarbonate, potassium carbonate, saleratus, sodium phosphate, di(2-ethylhexyl)phosphate
Hydrogen sodium, potassium sulfate, sodium sulphate, sodium peroxydisulfate.
The neutralization agent solution includes sulfuric acid, hydrofluoric acid, phosphoric acid, cocinic acid, vegetable oil acid, sodium hydroxide, hydrogen-oxygen
Change potassium, ethanol amine, diethanol amine, diethylenetriamine, ammonium hydrogen carbonate, thiocarbamide.
The complexing agent mixture includes EDTA, sodium gluconate, sodium potassium tartrate tetrahydrate, EDTA-2Na, EDTA-4Na.Institute
Stating buffer mixture includes benzotriazole, mercapto benzothiazole, methyl benzotriazazole, imidazoline, sodium molybdate, chromic acid
Sodium, sodium metasilicate, sodium tungstate.
Because the technical program use above-mentioned several solvent mixed liquors, conductive ion mixture, surfactant mixed liquor, in
And agent solution, complexing agent mixture mitigate agent composition and the Neutral Electrolysis are made and removes flash liquid, which removes flash
The acid-base solution of liquid is neutrality, so that avoiding in the prior art due to strong alkali solution contacts staff's skin when in use
Burn staff is caused, fire hazard is occurred to factory, and is needed in a large amount of acidic materials and strong alkali solution, and
The environment of surrounding will not be polluted, therefore, reaches safety, environmental protection and energy saving, and reduce use cost.At the same time, the neutrality
Acid-base solution will not cause to be layered to processed IC pin, so reaching the phenomenon that avoiding processed IC pin generation.
In order to which the above-mentioned Neutral Electrolysis of processing and fabricating removes flash liquid, and the Neutral Electrolysis used goes the manufacture craft mistake of flash liquid
Journey are as follows: first take 1 kilogram of solvent mixed liquor to pour into inside reaction kettle, reaction kettle revolving speed is set as 200 revs/min, and temperature is 40 °,
It is uniformly sufficiently stirred in normal atmosphere (An) 1 hour.
Then, then 0.1 kilogram of surfactant mixed liquor is taken slowly to pour reaction kettle into, reaction kettle revolving speed be set as 200 turns/
Minute, temperature is 40 °, is uniformly sufficiently stirred in normal atmosphere (An) 1 hour.
Then, then 0.01 kilogram of complexing agent mixture is taken slowly to pour reaction kettle into, reaction kettle revolving speed is set as 300 revs/min
Clock, temperature are 60 °, are uniformly sufficiently stirred in normal atmosphere (An) 1 hour.
Then, then 0.01 kilogram of inhibition agent composition is taken slowly to pour reaction kettle into, reaction kettle revolving speed is set as 300 revs/min
Clock, temperature are 60 °, are uniformly sufficiently stirred in normal atmosphere (An) 1 hour.
Then, then 0.4 kilogram of conductive ion mixture is taken slowly to pour reaction kettle into, reaction kettle revolving speed is set as 300 revs/min
Clock, temperature are 60 °, are uniformly sufficiently stirred 4 hours in the case of normal atmosphere (An), are cooled to room temperature.
Then, the value that the pH value of solution in quantitative response kettle is measured using PH, finally takes 0.48 kilogram of neutralization agent solution
It is poured slowly into inside reaction kettle in solution, so that the value of reaction kettle internal solution pH value is 7, as Neutral Electrolysis removes flash
Liquid.It is compared to each other with similar product in the prior art, the present invention also has production, and the processing is simple, easy to operate function.
Flash liquid is gone into a kind of Neutral Electrolysis using above-mentioned manufacture craft, which goes the application method mistake of flash
Journey are as follows: first go flash liquid to be poured into electrolysis the Neutral Electrolysis and go inside flash groove, which goes flash liquid storage capacity
Control electrolysis is gone at flash groove depth 2/3rds, and voltage is adjusted to 2.0V to 3.0V, and electric current is adjusted to 20 amperes to 60
Ampere；Then, the IC pin with defective material is placed in the electrolysis to go to carry out electrolysis processing inside flash groove, in life
During production, it is electrolysed the electrolysis gone inside flash groove and the liquid level of flash liquid is gone to decline, directly add to liquid original position.Upper
It states in use process, it is only necessary to IC pin is placed into Neutral Electrolysis and go to carry out electrolysis processing inside flash liquid, avoided
The mode that gap using gas removes defective material between pin and plastic packaging material in the prior art, so having easy to use
The effect of.Used voltage when flash is gone to be adjusted to 2.0V to 3.0V, electric current is adjusted to 20 amperes to 60 amperes, so that
Have the function of using low current, is conducive to operate the purpose used.
It is described above referring to the preferred embodiment of the present invention, not thereby limiting the scope of the invention.This field skill
Art personnel without departing from the scope and spirit of the invention in made by any modifications, equivalent replacements, and improvements, should all be of the invention
Within interest field.
Claims (9)
1. a kind of Neutral Electrolysis removes flash liquid comprising surfactant mixed liquor, solvent mixed liquor, conductive ion mixture,
Neutralize agent solution, complexing agent mixture, buffer mixture；It is characterized by: the solvent mixed liquor composition quality ratio is
50%, the conductive ion mixture quality component ratio is 20%, the surfactant mixed liquor mass component ratio
It is 10%, the neutralizer solution quality component ratio is 18%, and the complexing agent mixture mass component ratio is
0.1%, the moderator mixture quality component ratio is 0.1%.
2. a kind of Neutral Electrolysis as described in claim 1 goes the manufacture craft of flash liquid, technical process are as follows: first take 1 kilogram
Solvent mixed liquor is poured into inside reaction kettle, and reaction kettle revolving speed is set as 200 revs/min, and temperature is 40 °, in normal atmosphere (An) feelings
It is uniformly sufficiently stirred under condition 1 hour；
Then, then 0.1 kilogram of surfactant mixed liquor is taken slowly to pour reaction kettle into, reaction kettle revolving speed is set as 200 revs/min
Clock, temperature are 40 °, are uniformly sufficiently stirred in normal atmosphere (An) 1 hour；
Then, then 0.01 kilogram of complexing agent mixture is taken slowly to pour reaction kettle into, reaction kettle revolving speed is set as 300 revs/min, temperature
Degree is 60 °, is uniformly sufficiently stirred in normal atmosphere (An) 1 hour；
Then, then 0.01 kilogram of inhibition agent composition is taken slowly to pour reaction kettle into, reaction kettle revolving speed is set as 300 revs/min, temperature
Degree is 60 °, is uniformly sufficiently stirred in normal atmosphere (An) 1 hour；
Then, then 0.4 kilogram of conductive ion mixture is taken slowly to pour reaction kettle into, reaction kettle revolving speed is set as 300 revs/min,
Temperature is 60 °, is uniformly sufficiently stirred 4 hours in the case of normal atmosphere (An), is cooled to room temperature；
Then, the value that the pH value of solution in quantitative response kettle is measured using PH, finally takes 0.48 kilogram of neutralization agent solution slow
It is poured into inside reaction kettle in solution, so that the value of reaction kettle internal solution pH value is 7, as Neutral Electrolysis removes flash liquid.
3. a kind of Neutral Electrolysis as described in claim 1 goes the application method of flash liquid, application method process are as follows: first by institute
It states Neutral Electrolysis flash liquid is gone to be poured into electrolysis and go inside flash groove, which goes the control electrolysis of flash liquid storage capacity to go to overflow
At hopper depth 2/3rds, voltage is adjusted to 2.0V to 3.0V, and electric current is adjusted to 20 amperes to 60 amperes；So
Afterwards, the IC pin with defective material the electrolysis is placed in go inside flash groove to be handled, such as in process of production, electrolysis
The electrolysis gone inside flash groove goes the liquid level of flash liquid to decline, and directly adds to liquid original position.
4. a kind of Neutral Electrolysis as claimed in claim 1 or 2 removes flash liquid, it is characterised in that: the surfactant mixing
Liquid includes neopelex, lauryl sodium sulfate, OP-10, nonyl phenolic group polyoxyethylene ether, aliphatic alcohol polyethenoxy
Ether, cocoanut fatty acid diethanolamide, fatty glyceride, fatty acid sorbitan, coco-nut oil fatty acid diacetayl amide, isopropyl
Alkylolamides, dioctyl succinate disulfonate acid, FC-4430, F300, WL400, GE-511, FS-10.
5. a kind of Neutral Electrolysis as claimed in claim 1 or 2 removes flash liquid, it is characterised in that: the solvent mixed liquor includes
There is water, PEG200, PEG600, ethylene glycol, glycerol, diethylene glycol monobutyl ether, dimethylformamide, dipropylene glycol, isopropanol, two
Methyl sulfoxide, tripropylene glycol butyl ether, higher boiling benzyl oxide, glycol hexyl ether, diethylene glycol diethyl ether.
6. a kind of Neutral Electrolysis as claimed in claim 1 or 2 removes flash liquid, it is characterised in that: the conductive ion mixture
It include sodium carbonate, sodium bicarbonate, potassium carbonate, saleratus, sodium phosphate, sodium dihydrogen phosphate, potassium sulfate, sodium sulphate, persulfuric acid
Sodium.
7. a kind of Neutral Electrolysis as claimed in claim 1 or 2 removes flash liquid, it is characterised in that: the neutralization agent solution includes
There are sulfuric acid, hydrofluoric acid, phosphoric acid, cocinic acid, vegetable oil acid, sodium hydroxide, potassium hydroxide, ethanol amine, diethanol amine, divinyl
Triamine, ammonium hydrogen carbonate, thiocarbamide.
8. a kind of Neutral Electrolysis as claimed in claim 1 or 2 removes flash liquid, it is characterised in that: the complexing agent mixture packet
Contain EDTA, sodium gluconate, sodium potassium tartrate tetrahydrate, EDTA-2Na, EDTA-4Na.
9. a kind of Neutral Electrolysis as claimed in claim 1 or 2 removes flash liquid, it is characterised in that: the buffer mixture packet
Include benzotriazole, mercapto benzothiazole, methyl benzotriazazole, imidazoline, sodium molybdate, sodium chromate, sodium metasilicate, sodium tungstate.
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| CN201811547399.XA CN109371455A (en) | 2018-12-18 | 2018-12-18 | A kind of Neutral Electrolysis go flash liquid, this go the technique and application method of flash liquid |
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| CN201811547399.XA CN109371455A (en) | 2018-12-18 | 2018-12-18 | A kind of Neutral Electrolysis go flash liquid, this go the technique and application method of flash liquid |
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| CN112899765A (en) * | 2021-01-19 | 2021-06-04 | 池州市鼎弘半导体科技有限公司 | Neutral deflashing electrolyte and preparation process and use method thereof |
| CN116218494A (en) * | 2021-12-06 | 2023-06-06 | 中国石油天然气股份有限公司 | Composite auxiliary agent, deep profile control crosslinking agent, preparation method and application thereof |
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