Light weight composite material systems, polymeric materials, and methods

A method for producing a light weight composite material comprising steps of:

• extruding a sheet of a filled polymeric material;
• and
• interposing the sheet between a first metallic layer and a second metallic layer;
• wherein the filled polymeric material comprises:
• i. one or more polymers including a polyolefin polymer having a crystallinity of about 20 wt. % to about 80 wt. % as measured using differential scanning calorimetry and a melting point greater than about 100° C., as measured according to ASTM D3418-08;
• and
• ii. a metallic filler;
• wherein the light weight composite material is weldable and stampable;
• wherein the one or more polymers has drop impact performance of about 100 g or more as measured according to ASTM D1790A at a thickness of 2 mil.

A method for producing a light weight composite material comprising steps of:

• extruding a sheet of a filled polymeric material;
• and
• interposing the sheet between a first metallic layer and a second metallic layer;
• wherein the filled polymeric material comprises:
• i. one or more polymers including a polyolefin polymer having a crystallinity of about 20 weight percent to about 80 weight percent as measured using differential scanning calorimetry and a melting point greater than about 100° C., as measured according to ASTM D3418-08;
• and
• ii. a filler that provides a conductive flow path through the filled polymeric material;
• wherein the filled polymeric material is present in an amount greater than 30 volume percent based on the total volume of the light weight composite material;
• the light weight composite material is stampable;
• and
• the one or more polymers has drop impact performance of about 100 g or more as measured according to ASTM D1790A at a thickness of 2 mil.

A method for producing a light weight composite material comprising steps of:

• extruding a sheet of a filled polymeric material;
• and
• interposing the sheet between a first metallic layer and a second metallic layer;
• wherein the filled polymeric material comprises:
• i. one or more polymers including a polyolefin polymer having a crystallinity of about 20 weight percent to about 80 weight percent as measured using differential scanning calorimetry and a melting point greater than about 100° C., as measured according to ASTM D3418-08;
• and
• ii. a filler that provides a conductive flow path through the filled polymeric material;
• wherein the filled polymeric material is present in an amount greater than 30 volume percent based on the total volume of the light weight composite material;
• the light weight composite material is stampable;
• and
• the one or more polymers includes an elastomer having a tensile modulus at 100% elongation of less than 2 MPa and a tensile elongation at break of greater than 150%, both measured according to ASTM D638-08 at a nominal strain rate of 0.1 s−1.