# US 2013/0153142 A1 · Reinforcing sheet and reinforcing method

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- Number: US 2013/0153142 A1
- Document ID: US20130153142A1
- Status: Published application
- Kind: A1
- Application number: 13/820,682
- Filed: 2011-08-22
- Published: 2013-06-20
- Earliest claimed: 2010-09-06
- Assignees: Nitto Denko Corporation
- Inventors: Yasuhiko Kawaguchi
- Web page: https://patentgrep.com/patent/US20130153142A1

## CPC

- C09D 5/08: Anti-corrosive paints
- B32B 5/022: {Non-woven fabric}
- B32B 15/08: of synthetic resin
- B32B 15/092: comprising epoxy resins
- B32B 15/18: comprising iron or steel {(B32B15/011, B32B15/012 and B32B15/013 take precedence)}
- B32B 25/10: next to a fibrous or filamentary layer
- B32B 27/12: next to a fibrous or filamentary layer
- B32B 27/20: using fillers, pigments, thixotroping agents
- B32B 27/26: using curing agents
- B32B 27/38: comprising epoxy resins
- B32B 2262/101: Glass fibres
- B32B 2264/105: Metal
- B32B 2264/108: Carbon, e.g. graphite particles
- B32B 2307/752: Corrosion inhibitor
- B32B 2605/08: Cars
- Y10T 442/2426: Elemental carbon containing
- 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)
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A reinforcing sheet to be bonded to a metal adherend includes a resin layer and a constraining layer laminated on the resin layer. The resin layer contains a thermosetting resin, a metal which has a higher ionization tendency than that of the metal adherend, and an electrically-conductive carbon.

## Claims

### Claim 1

A reinforcing sheet to be bonded to a metal adherend comprising:
a resin layer and
a constraining layer laminated on the resin layer, wherein
the resin layer contains a thermosetting resin, a metal which has a higher ionization tendency than that of the metal adherend, and an electrically-conductive carbon.

### Claim 2 (depends on 1)

The reinforcing sheet according to claim 1, wherein
the volume resistivity of the resin layer is 1×108 Ω cm or less.

### Claim 3 (depends on 1)

The reinforcing sheet according to claim 1, wherein
the metal is zinc.

### Claim 4 (depends on 1)

The reinforcing sheet according to claim 1, wherein
the resin layer further contains a curing agent and the thermosetting resin further contains an epoxy resin.

### Claim 5 (depends on 1)

The reinforcing sheet according to claim 1, wherein
the resin layer further contains a cross-linking agent and the thermosetting resin further contains a rubber.

### Claim 6 (depends on 1)

The reinforcing sheet according to claim 1, wherein
the constraining layer is made of a glass cloth.

### Claim 7

A reinforcing method comprising:
bonding a reinforcing sheet to a metal adherend to heat a resin layer, wherein
the reinforcing sheet comprises:
the resin layer and
a constraining layer laminated on the resin layer, and
the resin layer contains a thermosetting resin, a metal which has a higher ionization tendency than that of the metal adherend, and an electrically-conductive carbon.

### Claim 8

A reinforcing method comprising:
bonding a reinforcing sheet to a steel plate or a zinc-plated steel plate to heat a resin layer, wherein
the reinforcing sheet comprises:
the resin layer and
a constraining layer laminated on the resin layer, and
the resin layer contains a thermosetting resin, zinc, and an electrically-conductive carbon.