US3562126A - Fixing of electrophoretic deposits - Google Patents
Fixing of electrophoretic deposits Download PDFInfo
- Publication number
- US3562126A US3562126A US775905A US3562126DA US3562126A US 3562126 A US3562126 A US 3562126A US 775905 A US775905 A US 775905A US 3562126D A US3562126D A US 3562126DA US 3562126 A US3562126 A US 3562126A
- Authority
- US
- United States
- Prior art keywords
- coating
- carbon
- pigment
- deposit
- fixing
- 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.)
- Expired - Lifetime
Links
- 238000000576 coating method Methods 0.000 abstract description 33
- 239000011248 coating agent Substances 0.000 abstract description 31
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 20
- 229910052799 carbon Inorganic materials 0.000 abstract description 20
- 238000010438 heat treatment Methods 0.000 abstract description 16
- 238000000151 deposition Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 5
- 239000000049 pigment Substances 0.000 description 20
- 238000001962 electrophoresis Methods 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000006229 carbon black Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000002310 reflectometry Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000002659 electrodeposit Substances 0.000 description 1
- 238000001652 electrophoretic deposition Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000006194 liquid suspension Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229940032007 methylethyl ketone Drugs 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/18—After-treatment, e.g. pore-sealing
Definitions
- This invention pertains to the art of coating, in particular to the art of coating by electrophoresis.
- An anodized substrate (workpiece) is coated by electrophoresis with a desired permanent coating.
- the desired permanent coating is then coated, in a different bath, with a thin layer of carbon.
- the doubly coated substrate is then exposed to radiant heat to fix the desired permanent coating to the workpiece, the required time being minimized, (or the required temperature being reduced) and rendered independent of the absorptivity of the desired by the presence of the external carbon coating. It has been found that the auxiliary superficial deposit of carbon may then be readily removed by a jet of lowpressure air or low-velocity water.
- the carbon-overcoated sample was blown with a jet of air to remove the carbon coating so that the pigment beneath was exposed, and compared with the otherwise identically treated sample which had been heated without a carbon coating.
- the color of the pigment carbon-overcoated during heat treatment was darker than the identically treated but not carbon overcoated sample.
- a panel heated without carbon overcoat at 450 degrees for 60 seconds was comparable in color with a panel heated with carbon overcoat at 400 degrees for 60 seconds. Since the pigment tends to be darkened by the heat treatment, it is evident that the application of carbon overcoating does produce the equivalent of higher-temperature heat treatment for the same period of time without carbon overcoating.
- prepared samples showed the same coating color for a panel heat treated without carbon overcoating for seconds at 450 degrees, and one heat treated with carbon overcoating for 70 seconds at 450 degrees. The adherence of the pigment coating was equally good in all cases.
- the carbon overcoating is not required to perform any function other than absorption of radiation, the conditions of applying it electrophoretically are not critical. I have employed successfully voltages from 25 to 1000 volts, and deposition times ranging from 1 to 15 seconds.
- the black overcoating be substantially complete so that it covers the desired pigment coating, although even an incomplete coating (which there is no apparent reason to desire or use) would be expected to produce some improvement in absorption of radiation. Since the effect is merely one of heating and not chemical reaction (as is evidenced by the ready removal of the carbon after the heating operation) the particular nature of the desired pigment is immaterial, provided only that it may be fixed by heating.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US77590568A | 1968-11-14 | 1968-11-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3562126A true US3562126A (en) | 1971-02-09 |
Family
ID=25105898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US775905A Expired - Lifetime US3562126A (en) | 1968-11-14 | 1968-11-14 | Fixing of electrophoretic deposits |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3562126A (enrdf_load_stackoverflow) |
| JP (1) | JPS4837128B1 (enrdf_load_stackoverflow) |
| DE (1) | DE1951951A1 (enrdf_load_stackoverflow) |
| FR (1) | FR2023292A1 (enrdf_load_stackoverflow) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4659444A (en) * | 1984-07-10 | 1987-04-21 | Sumitomo Electric Industries, Ltd. | Method for producing carbon fiber reinforced carbon material |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6250105U (enrdf_load_stackoverflow) * | 1985-09-14 | 1987-03-28 |
-
1968
- 1968-11-14 US US775905A patent/US3562126A/en not_active Expired - Lifetime
-
1969
- 1969-10-15 DE DE19691951951 patent/DE1951951A1/de active Pending
- 1969-11-11 JP JP44089823A patent/JPS4837128B1/ja active Pending
- 1969-11-14 FR FR6939237A patent/FR2023292A1/fr active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4659444A (en) * | 1984-07-10 | 1987-04-21 | Sumitomo Electric Industries, Ltd. | Method for producing carbon fiber reinforced carbon material |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1951951A1 (de) | 1970-06-18 |
| JPS4837128B1 (enrdf_load_stackoverflow) | 1973-11-09 |
| FR2023292A1 (enrdf_load_stackoverflow) | 1970-08-07 |
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