Electrically conductive thermoset composition, method for the preparation thereof, and articles derived therefrom
AssigneeGeneral Electric Company
InventorsGary William Yeager, Manuel Cavazos, Hua Guo, Glen David Merfeld, John Rude, Erich Otto Teutsch, Kenneth Paul Zarnoch
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Abstract
A conductive thermosetting composition comprises a functionalized poly(arylene ether), an alkenyl aromatic monomer, an acryloyl monomer, and a conductive agent. After curing, the composition exhibits good stiffness, toughness, heat resistance, and conductivity, and it is useful in the fabrication of a variety of conductive components, including the bipolar plates of fuel cells.
Claims46
A thermoset composition, comprising:
- a functionalized poly(arylene ether);
- an alkenyl aromatic monomer;
- an acryloyl monomer;
- and
- a conductive agent.
A thermoset composition, comprising:
- about 1 to about 70 parts by weight of a functionalized poly(arylene ether);
- about 30 to about 98 parts by weight of an alkenyl aromatic monomer;
- about 1 to about 69 parts by weight of an acryloyl monomer;
- and
- about 5 to about 95 weight percent of a conductive agent;
- wherein the parts by weight of the functionalized poly(arylene ether), the alkenyl aromatic monomer, and the acryloyl monomer sum to 100;
- and wherein the amount of the conductive agent is based on the total weight of the composition.
A thermoset composition, comprising:
- about 10 to about 50 parts by weight of a methacrylate-capped poly(arylene ether);
- about 40 to about 80 parts by weight of a monofunctional alkenyl aromatic monomer;
- about 5 to about 50 parts by weight of a polyfunctional acryloyl monomer;
- about 1 to about 5 parts by weight of a curing catalyst;
- and
- about 20 to about 95 weight percent of graphite;
- wherein parts by weight of the methacrylate-capped poly(arylene ether), the monofunctional alkenyl aromatic monomer, the polyfunctional acryloyl monomer, and the curing catalyst are based on 100 total parts for the methacrylate-capped poly(arylene ether), the monofunctional alkenyl aromatic monomer, and the polyfunctional acryloyl monomer;
- and wherein the weight percent of the graphite is based on the total weight of the composition.
A thermoset composition, comprising:
- a capped poly(arylene ether) comprising a capping group having the structure
- 30
- wherein R6-R8 are each independently hydrogen or C1-C12 alkyl;
- an alkenyl aromatic monomer;
- an acryloyl monomer;
- and
- a conductive agent.
A thermoset composition, comprising:
- a functionalized poly(arylene ether);
- an alkenyl aromatic monomer;
- an acryloyl monomer comprising at least one acryloyl moiety having the structure
- 31
- wherein R20-R22 are each independently selected from the group consisting of hydrogen, C1-C12 alkyl, C2-C12 alkenyl, C6-C18 aryl, C7-C18 alkyl-substituted aryl, C7-C18 aryl-substituted alkyl, C2-C12 alkoxycarbonyl, C7-C18 aryloxycarbonyl, C8-C18 alkyl-substituted aryloxycarbonyl, C8-C18 aryl-substituted alkoxycarbonyl, nitrile, formyl, carboxylate, imidate, and thiocarboxylate;
- and
- a conductive agent.
A thermoset composition, comprising the reaction product of:
- a functionalized poly(arylene ether);
- an alkenyl aromatic monomer;
- an acryloyl monomer;
- and
- a conductive agent.
A method of preparing a thermoset composition, comprising:
- blending a functionalized poly(arylene ether), an alkenyl aromatic monomer, an acryloyl monomer, and a conductive agent to form an intimate blend.
A method of preparing a thermoset composition, comprising:
- mixing a poly(arylene ether) and an alkenyl aromatic monomer to form a first blend;
- mixing the first blend with a capping agent under conditions suitable to promote reaction of the poly(arylene ether) and the capping agent to form a capped poly(arylene ether), thereby forming a second blend comprising the capped poly(arylene ether) and the alkenyl aromatic monomer;
- mixing the second blend with an acryloyl monomer and a conductive agent.
Dependencies are inferred from the claim text.