Announcements of new polymers are infrequent, with most of the action coming in additive systems that enhance performance or processability. DSM Engineering Plastics says it has developed a “breakthrough” polymer called PA4T, a specialized nylon aimed at electronics miniaturization. Specific attributes include excellent dimensional stability, compatibility with lead free soldering, high stiffness and mechanical strength at elevated temperatures, high melting point, and excellent flow and processing window. Potential applications include memory card connectors, CPU sockets, and air/fuel and power train components. A market development plant in the Netherlands will open early next year.
HP revealed more of its 3D printing plans in a recent webinar. Senior vice president of inkjet and graphics solution business Stephen Nigro spoke about how the technology works and expanded on HP's vision of open collaboration to commercialize its Multi Jet Fusion 3D printing technology for end-production, and open collaboration on new materials. He also said HP will create software to help users decide when to use Multi Jet Fusion versus conventional subtractive manufacturing.
A lightweight electric urban concept car designed by several European companies weighs only 992 lb without its battery. It would have weighed 26.7 lb more if its windows were made of glass instead of the specially coated LEXAN polycarbonate resin from SABIC Innovative Plastics.
Skylar Tibbits' team in MIT's Self-Assembly Lab is now 4D printing self-assembling shapes made of programmable carbon composites and custom wood grain. The composites are being used in a sport car airfoil, and the wood grain is beautiful.
The NanoSteel Company has produced high-hardness ferrous metal matrix composite (MMC) parts using a new nanosteel powder in a one-step 3D-printing process. Parts are 99.9% dense, crack-free, and with wear resistance comparable to M2 tool steels.
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