Thermally conductive polyvinyl halide
AssigneeGEON Performance Solutions, LLC
InventorsLing Hu, Sang Lee
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Abstract
A polyvinyl halide compound has thermal conductivity and includes polyvinyl halide resin, natural or synthetic graphite of flake or spheroid form, and at least 0.5 weight percent of epoxidized vegetable oil. Selection of types and amounts of graphite and epoxidized vegetable oil provide thermal conductivity while other desirable properties of the compound are suitably maintained. The compound can be used for making any end use article that needs flame retardance and good thermal management and is especially useful as a thermally conductive material to replace die cast or extruded aluminum heat sinks in industrial applications, such as LED lighting fixtures.
Claims39
A polyvinyl halide compound having thermal conductivity, comprising:
- polyvinyl halide resin;
- natural or synthetic graphite of flake or spheroid form;
- and
- at least 0.5 and less than or equal to 6.4 weight percent of epoxidized vegetable oil;
- wherein the polyvinyl halide compound has a heat distortion temperature of at least 65° C. at 66 psi, measured according to ASTM D648.
A polyvinyl halide compound having thermal conductivity, comprising:
- polyvinyl halide resin;
- natural or synthetic graphite of flake or spheroid form;
- and
- at least 0.5 and less than or equal to 6.4 weight percent of epoxidized vegetable oil;
- wherein the polyvinyl halide compound has a Notched Izod impact resistance of 0.3-1.5 ft-lb/in at 73° F. measured according to ASTM D256.
A polyvinyl halide compound having thermal conductivity, comprising:
- polyvinyl halide resin;
- natural or synthetic graphite of flake or spheroid form;
- and
- at least 0.5 and less than or equal to 6.4 weight percent of epoxidized vegetable oil;
- wherein the polyvinyl halide compound contains essentially no additional plasticizer.
Dependencies are inferred from the claim text.