# US 2014/0151231 A1 · Process for selective isolation of CFRP parts by electrodeposition coatings

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- Number: US 2014/0151231 A1
- Document ID: US20140151231A1
- Status: Published application
- Kind: A1
- Application number: 13/948,418
- Filed: 2013-07-23
- Published: 2014-06-05
- Earliest claimed: 2012-07-24
- Assignees: Airbus Operations GmbH
- Applicants: Airbus Operations GmbH
- Inventors: Rouven Kott; Armin Fangmeier; Simone Schroeder; Thomas Lemckau
- Web page: https://patentgrep.com/patent/US20140151231A1

## CPC

- C25D 13/00: Electrophoretic coating characterised by the process (C25D15/00 takes precedence; compositions for electrophoretic coating C09D5/44)
- B29C 73/00: Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D ({linings for tyres acting locally B60C5/142;} retreading tyres B29D30/54; devices for covering leaks in pipes or hoses F16L55/16)
- C09D 5/44: for electrophoretic applications (processes for coating by electrophoresis C25D13/00)
- C25D 5/02: Electroplating of selected surface areas
- C25D 13/12: characterised by the article coated
- C25D: PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)

## Abstract

A process of repairing defects on a carbon fiber reinforced plastic (CFRP) component wherein defects on a surface of a CFRP component are selectively repaired by electrodeposition coating. With this process a reduction of coating material and work force as well as weight of the repaired CFRP component can be achieved.

## Claims

### Claim 1

A process for repairing defects on a carbon fiber reinforced plastic, CFRP, component, wherein defects on the CFRP component are selectively repaired by electrodeposition coating using an insulating coating material.

### Claim 2 (depends on 1)

The process according to claim 1, wherein the defects are at least one of surface defects and electrical conductive areas on the CFRP component.

### Claim 3 (depends on 1)

The process according to claim 1, wherein the electrodeposition coating is one of an anaphoretic electrodeposition coating and a cathaphoretic electrodeposition coating.

### Claim 4 (depends on 1)

The process according to claim 1, wherein the electrodeposition coating is carried out with a dipping varnish that can be cured at a temperature at or below 250° C.

### Claim 5 (depends on 4)

The process according to claim 4, wherein the dipping varnish is an electrically insulating dipping varnish.

### Claim 6 (depends on 1)

The process according to claim 1, wherein the electrodeposition coating is carried out at a voltage of 50 V to 400V.

### Claim 7 (depends on 1)

The process according to claim 1, wherein the carbon fiber reinforced plastic comprises carbon fibers and a resin.

### Claim 8 (depends on 1)

The process according to claim 1, wherein the defects are places wherein a carbon fiber is at least partially not covered by resin.

### Claim 9 (depends on 1)

The process according to claim 1, wherein the CFRP component is not metallized before the electrodeposition coating.

### Claim 10 (depends on 1)

The process according to claim 1, wherein the CFRP component is at least one of rinsed and cured after the electrodeposition coating.