Newly developed selective self-adhesive silicone rubbers can be co-molded with nylons, polycarbonates, and PBT-type polyesters, creating new design opportunities in medical devices and cars. “These materials can eliminate assembly operations for needle-less IV valves,” comments Eric Bishop of Shin-Etsu Silicones. The new materials’ combinations are also replacing gum rubber in automotive applications. Bishop spoke at Molding 2008 in San Francisco. The materials are called selective because they don’t adhere to steel.
The amount of plastic clogging the ocean continues to grow. Some startling, not-so-good news has come out recently about the roles plastic is playing in the ocean, as well as more heartening news about efforts to collect and reuse it.
Optomec's third America Makes project for metal 3D printing teams the LENS process company with GE Aviation, Lockheed, and other big aerospace names to develop guidelines for repairing high-value flight-critical Air Force components.
A self-propelled robot developed by a team of researchers headed by MIT promises to detect leaks quickly and accurately in gas pipelines, eliminating the likelihood of dangerous explosions. The robot may also be useful in water and petroleum pipe leak detection.
Aerojet Rocketdyne has built and successfully hot-fire tested an entire 3D-printed rocket engine. In other news, NASA's 3D-printed rocket engine injectors survived tests generating a record 20,000 pounds of thrust. Some performed equally well or better than welded parts.
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