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Integrated surface protection layer

IP.com Disclosure Number: IPCOM000249368D
Publication Date: 2017-Feb-22
Document File: 2 page(s) / 32K

Publishing Venue

The IP.com Prior Art Database

Abstract

The intention of this idea is to avoid galvanic corrosion (electrochemical) between CFRP and metal material. If metal parts are fixed on a CFRP structure, these parts have to protect via a wet, dry or glass ply on the surface of the carbon fibre structure. This process is manually and expensive.

The idea is to add a nonconductive foil on the surface of the junction between both different materials. The foil is included in the injection moulding part. A hybrid part has to be developed, the part made of two materials, one is the CFRP basic material and the other one is the nonconductive layer on the joining surface.

During the injection moulding process the foil melt on the basic material, after the melt process both material are permanently joint.

The nonconductive surface enable an installation without a protection between the parts, this reduce the installation time and cost.

Valid for all junction between CFRP and other material, where a galvanic corrosion (electrochemical) could be occur.

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This is the abbreviated version, containing approximately 71% of the total text.

1. ABSTRACT

The intention of this idea is to avoid galvanic corrosion (electrochemical) between CFRP and metal material. If metal parts are fixed on a CFRP structure, these parts have to protect via a wet, dry or glass ply on the surface of the carbon fibre structure. This process is manually and expensive. The idea is to add a nonconductive foil on the surface of the junction between both different materials. The foil is included in the injection moulding part. A hybrid part has to be developed, the part made of two materials, one is the CFRP basic material and the other one is the nonconductive layer on the joining surface. During the injection moulding process the foil melt on the basic material, after the melt process both material are permanently joint. The nonconductive surface enable an installation without a protection between the parts, this reduce the installation time and cost. Valid for all junction between CFRP and other material, where a galvanic corrosion (electrochemical) could be occur. 2. DISCLOSURE

The aim of this idea is to implement the nonconductive layer direct into an injection moulding part, the foil have to be placed inside the mold before closing it. After injection of the plastic the foil cover the surface of the part (see Fig.), no further manufacturing steps are necessary. Manufacturing steps:

1. Introduce of a nonconductive foil inside the open mold 2. Close the mold and inject the basic thermoplastic material 3. The part is finally done after...