Delamination resistant, weldable and formable light weight composites
AssigneeProductive Research LLC
InventorsShimon Mizrahi, Moshe Narkis
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Abstract
The present invention relates to filled polymeric materials including a thermoplastic polymer and a metallic filler and to light weight composite materials, which comprise a metallic layer and a polymeric layer, the polymeric layer containing the filled polymeric material. The filled polymeric material preferably is an extruded sheet. The composite materials of the present invention may be formed using conventional stamping equipment at ambient temperatures and/or welded to other metal materials using conventional welding techniques.
Claims20
A vehicle bumper comprising a composite material including:
- i. a first metal layer;
- ii. a second metal layer;
- and
- iii. a layer of a filed polymeric material interposed between the first and second metal layers;
- wherein the filled polymeric material includes:
- a first thermoplastic polymer;
- a second thermoplastic polymer different from the first thermoplastic polymer;
- and
- one or more fillers;
- wherein a ratio of a tensile modulus of the first thermoplastic polymer to a tensile modulus of the second thermoplastic polymer is 1.25:1 or higher, wherein the tensile modulus is measured according to ASTM D-08.
A vehicle bumper comprising a composite material including:
- i. a first metal layer;
- ii. a second metal layer;
- and
- iii. a layer of a filed polymeric material interposed between the first and second metal layers;
- wherein the filled polymeric material includes:
- a first thermoplastic polymer;
- a second thermoplastic polymer different from the first thermoplastic polymer;
- and
- one or more fillers;
- wherein the first thermoplastic polymer and second thermoplastic polymer have heat deflection temperatures, as measured according to ASTM D648, that differ by about 25° C. or more.
A vehicle bumper comprising a composite material including:
- i. a first metal layer;
- ii. a second metal layer;
- and
- iii. a layer of a filed polymeric material interposed between the first and second metal layers;
- wherein the filled polymeric material includes:
- a first thermoplastic polymer;
- a second thermoplastic polymer different from the first thermoplastic polymer;
- and
- one or more fillers;
- wherein the one or more fillers includes a metal filler, wherein the metal filler has a liquidus temperature that is less than a liquidus temperature of the first metal layer.
Dependencies are inferred from the claim text.