CN116970935A - Novel formula of LC passivation solution - Google Patents
Novel formula of LC passivation solution Download PDFInfo
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- CN116970935A CN116970935A CN202310893437.1A CN202310893437A CN116970935A CN 116970935 A CN116970935 A CN 116970935A CN 202310893437 A CN202310893437 A CN 202310893437A CN 116970935 A CN116970935 A CN 116970935A
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- Prior art keywords
- aluminum foil
- passivation solution
- oven
- passivation
- heat
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Links
- 238000002161 passivation Methods 0.000 title claims abstract description 59
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 76
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 76
- 239000011888 foil Substances 0.000 claims abstract description 70
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000003792 electrolyte Substances 0.000 claims abstract description 18
- 239000003292 glue Substances 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000000853 adhesive Substances 0.000 claims abstract description 7
- 230000001070 adhesive effect Effects 0.000 claims abstract description 7
- 238000000576 coating method Methods 0.000 claims description 11
- 239000011248 coating agent Substances 0.000 claims description 10
- 238000012360 testing method Methods 0.000 claims description 9
- 230000017525 heat dissipation Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 238000002360 preparation method Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 7
- 238000009825 accumulation Methods 0.000 claims description 4
- 239000003517 fume Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000000643 oven drying Methods 0.000 claims description 4
- 230000003647 oxidation Effects 0.000 claims description 4
- 238000007254 oxidation reaction Methods 0.000 claims description 4
- 239000002985 plastic film Substances 0.000 claims description 4
- 229920006255 plastic film Polymers 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 238000009472 formulation Methods 0.000 claims 6
- 239000000203 mixture Substances 0.000 claims 6
- 239000005025 cast polypropylene Substances 0.000 abstract description 14
- 229910045601 alloy Inorganic materials 0.000 abstract description 3
- 239000000956 alloy Substances 0.000 abstract description 3
- 238000004381 surface treatment Methods 0.000 abstract description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000006388 chemical passivation reaction Methods 0.000 description 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001978 electrochemical passivation Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/73—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals characterised by the process
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/82—After-treatment
Abstract
The invention discloses a new formula of LC passivation solution, which relates to the technical field of alloy surface treatment, and comprises 25.1% of passivation solution, 69.2% of isopropanol and 38.5% of pure water, wherein the components are respectively passivation solution, the passivation solution is used for passivating a bright surface and a matte surface of an aluminum foil, protecting the aluminum foil and increasing the adhesive force between the aluminum foil and glue, controlling the Cr content in the passivation solution, improving the electrolyte resistance and the inner layer stripping force between the aluminum foil, glue and CPP, and ensuring that the product has stronger and more stable performance.
Description
Technical Field
The invention relates to the technical field of alloy surface treatment, in particular to a novel formula of LC passivation solution.
Background
Aluminum has been widely used in modern industry and daily life due to advantages such as large reserves, high strength-to-mass ratio, good mechanical workability, excellent heat and electric conductivity, passivation treatment of aluminum and its alloys is an effective means for improving corrosion resistance, surface passivation treatment of aluminum alloys includes chemical passivation treatment and electrochemical passivation treatment, and patent No. CN105483685a discloses a passivation solution, which is prepared from the following raw materials in weight ratio: ceCl3.7H2O 20-60 g/L; 2-12 g/L of animal glue; 20-100 mL/L of polyalcohol; the H2O2 is 50-200 mL/L, the passivation solution can replace chromate to carry out passivation treatment, and the surface passivation treatment of various brands of wrought aluminum alloy such as 2A12 can be satisfied. After the rare earth passivation treatment is carried out and the corresponding coating is sprayed on the surface of the sample, the coating adhesion performance meets the requirements, and the passivation layer can be used as a bottom layer of other coating methods, but cannot play a role in protecting an aluminum foil and increasing the adhesion force between the aluminum foil and glue, and the Cr content in the passivation solution is not controlled, so that the electrolyte resistance and the inner layer stripping force between the aluminum foil, the glue and the CPP are lower.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides a novel formula of LC passivation solution, and solves the problems that the existing passivation solution cannot play a role in protecting aluminum foil and increasing the adhesion force between the aluminum foil and glue in the background art, and the Cr content in the passivation solution is not controlled, so that the electrolyte resistance and the inner layer stripping force between the aluminum foil, glue and CPP are lower.
(II) technical scheme
In order to achieve the above purpose, the invention is realized by the following technical scheme: the new formula of the LC passivation solution comprises the components of the Libang passivation solution, isopropanol and pure water, wherein the respective proportions are 25.1% of the passivation solution, 69.2% of the isopropanol and 38.5% of the pure water.
Preferably, the preparation method of the novel formula of the LC passivation solution comprises the following steps:
step one: uniformly stirring the diluted passivation solution according to the proportion by using a solution preparation machine, and pumping the passivation solution into a liquid tank for circulation;
step two: respectively coating passivation solution on the bright surface and the matte surface of the aluminum foil by using a coating roller;
step three: the aluminum foil enters an oven at a speed of 60 m/min;
step four: at the temperature: oven drying and cooling at 150deg.C, 220deg.C, 255 deg.C, 201 deg.C and 25deg.C;
step five: taking a small part of passivated aluminum foil, and measuring Cr content of a bright surface and a matte surface of the aluminum foil by EDX software;
step six: the Cr content range of the bright surface and the matte surface is controlled to be 7-9mg/m < 2 >, so that the aluminum foil can be protected from oxidation, and the adhesive force between the aluminum foil and glue and the electrolyte resistance can be improved.
Preferably, the method further comprises the step of carrying out a peeling force test, wherein the peeling force test method is to cut an aluminum foil spline with the width of 15mm by using an aluminum foil cutter, firstly manually peel the aluminum foil with the width of 10mm and the CPP, clamp the aluminum foil by an upper clamp of a Hunan Jie tensile machine, clamp the CPP by a lower clamp, take a T shape, stretch at the speed of 200mm/min and record experimental values.
Preferably, the method further comprises the step of performing electrolyte resistance test, wherein the electrolyte resistance test method is to cut aluminum foil strips with the width of 15mm by an aluminum foil cutter, firstly manually peeling the aluminum foil strips with the width of 10mm and CPP, putting the cut strips into a sealed aluminum plastic film bag, adding electrolyte and 1500ppm pure water, and performing heat sealing by a heat sealing machine at the temperature of 180 ℃ under the condition of 3S.
Preferably, the heat-sealed material is placed in an oven at 80 ℃ for 24 hours, then is taken out, is placed in a fume hood, is cooled to room temperature, is taken out to sample bars, is subjected to peel and stretch testing by using a Hunan Jie tensile machine, and relevant experimental values are recorded.
Preferably, when the sample is placed in the oven in the third step, a certain space is reserved around the upper and lower sides of the oven, so that the air flow in the oven is kept smooth, a heat dissipation plate is arranged on the heating wire in the oven, the sample cannot be placed on the heat dissipation plate, heat accumulation caused by heat up-flow cannot be influenced, and the oven body cannot vibrate greatly when the oven is closed.
(III) beneficial effects
The invention provides a novel formula of LC passivation solution. The beneficial effects are as follows:
the novel formula of the LC passivation solution can passivate the bright surface and the matte surface of the aluminum foil, plays a role in protecting the aluminum foil and increasing the adhesive force between the aluminum foil and the glue, controls the Cr content in the passivation solution, improves the electrolyte resistance and the inner layer stripping force between the aluminum foil, the glue and the CPP, and ensures that the product has stronger and more stable performance.
Drawings
FIG. 1 is a schematic flow chart of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, the embodiment of the invention provides a technical scheme:
embodiment one:
the new formula of the LC passivation solution comprises the components of the Libang passivation solution, isopropanol and pure water, wherein the respective proportions are 25.1% of the passivation solution, 69.2% of the isopropanol and 38.5% of the pure water.
The preparation method of the novel formula of the LC passivation solution comprises the following steps:
step one: uniformly stirring the diluted passivation solution according to the proportion by using a solution preparation machine, and pumping the passivation solution into a liquid tank for circulation;
step two: respectively coating passivation solution on the bright surface and the matte surface of the aluminum foil by using a coating roller;
step three: the aluminum foil enters an oven at a speed of 60 m/min;
step four: at the temperature: oven drying and cooling at 150deg.C, 220deg.C, 255 deg.C, 201 deg.C and 25deg.C;
step five: taking a small part of passivated aluminum foil, and measuring Cr content of a bright surface and a matte surface of the aluminum foil by EDX software;
step six: the Cr content range of the bright surface and the matte surface is controlled to be 7mg/m < 2 >, so that the aluminum foil can be protected from oxidation, and the adhesive force between the aluminum foil and glue and the electrolyte resistance can be improved.
The method comprises the steps of cutting an aluminum foil strip with the width of 15mm by an aluminum foil cutter, manually peeling the aluminum foil with the width of 10mm and the CPP, clamping the aluminum foil by an upper clamp of a Hunan Jie tensile machine, clamping the CPP by a lower clamp, stretching at the speed of 200mm/min in a T shape, and recording experimental values.
The experimental determination results are as follows:
the method for testing the electrolyte resistance comprises the steps of cutting aluminum foil strips with the width of 15mm by an aluminum foil cutter, manually peeling the aluminum foil strips with the width of 10mm and CPP, putting the cut strips into a sealed aluminum plastic film bag, adding electrolyte and 1500ppm pure water, and performing heat sealing by a heat sealing machine at the temperature of 180 ℃ under the condition of 3S.
And (3) putting the heat-sealed material into an oven at 80 ℃ for 24 hours, taking out, putting into a fume hood, cooling to room temperature, taking out the sample strip, carrying out peeling and stretching test by using a Hunan Jie tensile machine, and recording relevant experimental values.
When the sample is placed in the oven, a certain space is reserved around the oven, so that the air flow in the oven is kept smooth, a heat dissipation plate is arranged on the heating wire at the bottom of the oven, the sample cannot be placed on the heat dissipation plate, heat accumulation caused by heat up-flow cannot be influenced, and the oven body cannot vibrate greatly when the oven is closed.
Embodiment two:
the new formula of the LC passivation solution comprises the components of the Libang passivation solution, isopropanol and pure water, wherein the respective proportions are 25.1% of the passivation solution, 69.2% of the isopropanol and 38.5% of the pure water.
The preparation method of the novel formula of the LC passivation solution comprises the following steps:
step one: uniformly stirring the diluted passivation solution according to the proportion by using a solution preparation machine, and pumping the passivation solution into a liquid tank for circulation;
step two: respectively coating passivation solution on the bright surface and the matte surface of the aluminum foil by using a coating roller;
step three: the aluminum foil enters an oven at a speed of 60 m/min;
step four: at the temperature: oven drying and cooling at 150deg.C, 220deg.C, 255 deg.C, 201 deg.C and 25deg.C;
step five: taking a small part of passivated aluminum foil, and measuring Cr content of a bright surface and a matte surface of the aluminum foil by EDX software;
step six: the Cr content range of the bright surface and the matte surface is controlled to be 9mg/m < 2 >, so that the aluminum foil can be protected from oxidation, and the adhesive force between the aluminum foil and glue and the electrolyte resistance can be improved.
The method comprises the steps of cutting an aluminum foil strip with the width of 15mm by an aluminum foil cutter, manually peeling the aluminum foil with the width of 10mm and the CPP, clamping the aluminum foil by an upper clamp of a Hunan Jie tensile machine, clamping the CPP by a lower clamp, stretching at the speed of 200mm/min in a T shape, and recording experimental values.
The method for testing the electrolyte resistance comprises the steps of cutting aluminum foil strips with the width of 15mm by an aluminum foil cutter, manually peeling the aluminum foil strips with the width of 10mm and CPP, putting the cut strips into a sealed aluminum plastic film bag, adding electrolyte and 1500ppm pure water, and performing heat sealing by a heat sealing machine at the temperature of 180 ℃ under the condition of 3S.
And (3) putting the heat-sealed material into an oven at 80 ℃ for 24 hours, taking out, putting into a fume hood, cooling to room temperature, taking out the sample strip, carrying out peeling and stretching test by using a Hunan Jie tensile machine, and recording relevant experimental values.
When the sample is placed in the oven, a certain space is reserved around the oven, so that the air flow in the oven is kept smooth, a heat dissipation plate is arranged on the heating wire at the bottom of the oven, the sample cannot be placed on the heat dissipation plate, heat accumulation caused by heat up-flow cannot be influenced, and the oven body cannot vibrate greatly when the oven is closed.
The novel formula of the LC passivation solution can passivate the bright surface and the matte surface of the aluminum foil, plays a role in protecting the aluminum foil and increasing the adhesive force between the aluminum foil and the glue, controls the Cr content in the passivation solution, improves the electrolyte resistance and the inner layer stripping force between the aluminum foil, the glue and the CPP, and ensures that the product has stronger and more stable performance.
While the fundamental and principal features of the invention and advantages of the invention have been shown and described, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (6)
- A new formulation of lc passivation solution, characterized in that: the components comprise the Libang passivation solution, the isopropanol and the pure water, wherein the passivation solution, the isopropanol and the pure water respectively account for 25.1 percent, 69.2 percent and 38.5 percent of the passivation solution.
- 2. A new formulation of LC passivation solution according to claim 1, characterized in that: the preparation method of the novel formula of the LC passivation solution comprises the following steps:step one: uniformly stirring the diluted passivation solution according to the proportion by using a solution preparation machine, and pumping the passivation solution into a liquid tank for circulation;step two: respectively coating passivation solution on the bright surface and the matte surface of the aluminum foil by using a coating roller;step three: the aluminum foil enters an oven at a speed of 60 m/min;step four: at the temperature: oven drying and cooling at 150deg.C, 220deg.C, 255 deg.C, 201 deg.C and 25deg.C;step five: taking a small part of passivated aluminum foil, and measuring Cr content of a bright surface and a matte surface of the aluminum foil by EDX software;step six: the Cr content range of the bright surface and the matte surface is controlled to be 7-9mg/m < 2 >, so that the aluminum foil can be protected from oxidation, and the adhesive force between the aluminum foil and glue and the electrolyte resistance can be improved.
- 3. A new formulation of LC passivation solution according to claim 2, characterized in that: the method comprises the steps of cutting an aluminum foil strip with the width of 15mm by an aluminum foil cutter, manually peeling the aluminum foil with the width of 10mm and the CPP, clamping the aluminum foil by an upper clamp of a Hunan Jie tensile machine, clamping the CPP by a lower clamp, stretching at the speed of 200mm/min in a T shape, and recording experimental values.
- 4. A new formulation of LC passivation solution according to claim 2, characterized in that: the method for testing the electrolyte resistance comprises the steps of cutting aluminum foil strips with the width of 15mm by an aluminum foil cutter, manually peeling the aluminum foil strips with the width of 10mm and CPP, putting the cut strips into a sealed aluminum plastic film bag, adding electrolyte and 1500ppm pure water, and performing heat sealing by a heat sealing machine at the temperature of 180 ℃ under the condition of 3S.
- 5. The novel formulation of LC passivation solution of claim 4, wherein: and (3) putting the heat-sealed material into an oven at 80 ℃ for 24 hours, taking out, putting into a fume hood, cooling to room temperature, taking out the sample strip, carrying out peeling and stretching test by using a Hunan Jie tensile machine, and recording relevant experimental values.
- 6. A new formulation of LC passivation solution according to claim 1, characterized in that: when the sample is placed in the oven, a certain space is reserved around the oven, so that the air flow in the oven is kept smooth, a heat dissipation plate is arranged on the heating wire at the bottom of the oven, the sample cannot be placed on the heat dissipation plate, heat accumulation caused by heat up-flow cannot be influenced, and the oven body cannot vibrate greatly when the oven is closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310893437.1A CN116970935A (en) | 2023-07-19 | 2023-07-19 | Novel formula of LC passivation solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310893437.1A CN116970935A (en) | 2023-07-19 | 2023-07-19 | Novel formula of LC passivation solution |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116970935A true CN116970935A (en) | 2023-10-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310893437.1A Pending CN116970935A (en) | 2023-07-19 | 2023-07-19 | Novel formula of LC passivation solution |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116970935A (en) |
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2023
- 2023-07-19 CN CN202310893437.1A patent/CN116970935A/en active Pending
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