Three phase immiscible polymer-metal blends for high conductivty composites

A polymer composite filament, comprising:

• a first thermoplastic polymer defining a first continuous domain;
• and
• a second thermoplastic polymer defining a second continuous domain,
• wherein the second thermoplastic polymer is immiscible with the first thermoplastic polymer;
• and
• wherein a continuous metal trace is disposed at an interface of the first continuous domain and the second continuous domain.

A conductive polymer composite, comprising:

• a first thermoplastic polymer;
• a second thermoplastic polymer;
• and
• a plurality of metal particles,
• wherein the first thermoplastic polymer and the second thermoplastic polymer are immiscible with each other,
• wherein the plurality of metal particles comprise at least one metal that is immiscible with both the first thermoplastic polymer and the second thermoplastic polymer, wherein
• the first thermoplastic polymer defines a first continuous domain;
• the second thermoplastic polymer defines a second continuous domain;
• wherein
• a continuous metal trace is disposed at an interface of the first continuous domain and the second continuous domain and
• wherein the plurality of metal particles comprises BiSnAg and at least one of BiSnPb, BiSn, SbPbBi, SnBi, InSn, SnInAg, SnAgCu, SnAg, SnCu, SnSb, SnAgSb or mixtures thereof.