Highly porous carbon foam structures bonded with polymers such as polypropylene replace lead plates in typical vehicle batteries in a novel materials’ solution to problems with battery life and weight. The innovation comes from a company called Firefly Energy, using technology developed in the R&D Labs at Caterpillar, which was looking for a better battery for its vehicles. In the invention, carbon-graphite foam “grids” are loaded with lead oxides. The foam structure, creates huge surface-area advantages over conventional lead acid grid structures. Active material utilization levels go from the historical 20-50 percent up into the range of 70-90 percent as well as enhanced fast-recharge capability and greater high-rate / low-temperature discharge times, according to Firefly. Costs to produce energy will be higher than conventional lead acid batteries, but below other new technologies, such as lithium batteries. Firefly hopes the approach will be competitive for electric vehicles under development. North Star Battery will produce prototypes for possible use by the US Army.
Last week, the bill for reforming chemical regulation, the TSCA Modernization Act of 2015, passed the House. If it or a similar bill becomes law, the effects on cost and availability of adhesives and plastics incorporating these substances are not yet clear.
The latest crop of coating and sealant materials and devices has impressive credentials. Many are designed for tough environments with broad operating temperature ranges, and they often cure faster, require fewer process steps, and produce less waste.
A new program has been proposed for testing and certify 3D printing filaments for emissions safety. To engineers who've used 3D printers at home this is a no-brainer. It's from a consumer on Kickstarter, and targets use in homes and schools.
For the last 50 years, the Metal Powder Industries Federation (MPIF) has sponsored an awards competition for creative solutions to designing and fabricating near-net-shape parts using powder metal (PM) technologies. Here are the seven Grand Prize winners of the 2015 contest.
Graphene 3D Lab has added graphene to 3DP PLA filament to strengthen the material and add conductivity to prints made with it. The material can be used to 3D print conductive traces embedded in 3D-printed parts for electronics, as well as capacitive touch sensors.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.