GE Plastics long-standing attack on polyvinyl chloride continues in the Chevy Volt. Flexible Noryl replaces polyvinyl chloride for environmental and weight-saving reasons. Today's cars have over a mile of wiring, which is mostly made with PVC coating. The case against PVC, says GE, is that it contains halogen and releases dioxins when burned. The Noryl coating is also smaller in diameter than the PVC, making it easier for engineers to manipulate wires in the car. The PVC producers have long maintained that PVC is safe when incinerated properly. European regulators have been the most aggressive in attacking the use of PVC.
Producing high-quality end-production metal parts with additive manufacturing for applications like aerospace and medical requires very tightly controlled processes and materials. New standards and guidelines for machines and processes, materials, and printed parts are underway from bodies such as ASTM International.
Although plastics make up only about 11% of all US municipal solid waste, many are actually more energy-dense than coal. Converting these non-recycled plastics into energy with existing technologies could reduce US coal consumption, as well as boost domestic energy reserves, says a new study.
This year's Dupont-sponsored WardsAuto survey of automotive designers and other engineers shows lightweighting dominates the discussion. But which materials will help them meet the 2025 CAFE standards are not entirely clear.
Artificially created metamaterials are already appearing in niche applications like electronics, communications, and defense, says a new report from Lux Research. How quickly they become mainstream depends on cost-effective manufacturing methods, which will include additive manufacturing.
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