Plastic heat sinks will be getting a huge push on new Boeing aircraft, possibly starting on the Dreamliner. They offer additional opportunities to reduce weight and improve design through net shape injection molding. “This is a coming attraction,” says Dr. Alan G. Miller, director of technology integration on the Dreamliner. “This technology is already in the marketplace, but is just now moving into aircraft. Thermoplastics can become heat sinks through high loadings (30 to 40 percent) of carbon-graphite fiber or ceramics. Suppliers of thermally conductive thermoplastics include LNP Engineering Plastics (GE Plastics), RTP, Cool Plastics, and DuPont On the thermoset side, suppliers include Epoxies, Etc.
Plastic bags can become useful as either raw materials for plastics or feedstock for fuel. It's when they're not recycled that they become a major problem. That's what California's bag ban will prevent.
NASA's JPL and Caltech have achieved the mind-boggling feat of 3D printing multiple metals in a single end-part, grading from one alloy to another. They've also developed a method for combining metals with carbon fiber composites in end-production parts.
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