Conductive polymeric material
Assignee3M Innovative Properties Company
InventorsDavid T. Yust, Onur Sinan Yordem
Life of this patent
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Abstract
A melt-processable conductive material including a first continuous phase, a second continuous phase and a non-continuous phase. The first continuous phase includes a first polymer, the second continuous phase includes a second polymer, and the non-continuous phase includes a third polymer. The second continuous phase is co-continuous with the first continuous phase and the non-continuous phase is substantially contained within the first continuous phase. A plurality of conductive particles is distributed in the first polymer or at a boundary between the first continuous phase and the second continuous phase. The conductive particles form a conductive network.
Claims20
A conductive material, comprising:
- a first continuous phase comprising a first polymer composition;
- a second continuous phase comprising a second polymer composition different from the first polymer composition, the second continuous phase co-continuous with the first continuous phase;
- a non-continuous phase comprising a third polymer composition different from the first polymer composition and different from the second polymer composition, the non-continuous phase substantially contained within the first continuous phase;
- and
- a plurality of conductive particles distributed in the first polymer composition or at a boundary between the first continuous phase and the second continuous phase,
- wherein the conductive particles form a conductive network and wherein the conductive material is melt-processable.
A method of making an article, comprising the steps of:
- selecting a first polymer composition, a second polymer composition and a third polymer composition such that the first polymer composition, the second polymer composition and the third polymer composition are mutually immiscible;
- forming a polymer composite by mixing the first polymer composition with a plurality of conductive particles;
- blending the polymer composite, the second polymer composition and the third polymer composition to form a conductive material;
- and
- extruding the conductive material;
- wherein the conductive material comprises:
- a first continuous phase comprising the first polymer composition;
- a second continuous phase comprising the second polymer composition, the second continuous phase co-continuous with the first continuous phase;
- and
- a non-continuous phase comprising the third polymer composition;
- and wherein the conductive particles form a conductive network.
Dependencies are inferred from the claim text.