There was plenty of talk about biodegradable plastics from environmentalists in the 1990s. All the talk was about packaging, and much of the discussion lacked scientific grounding, even though it was embraced by many school science departments on the first one or two Earth Days. Biodegradability actually made little sense for much packaging because landfills are anaerobic – that is, they allow no oxygen or moisture, which are required for the degradation process. Degradation would allow toxins to leak into aquifers.
Look for biodegradability to move back into the forefront, however, and this time for engineering applications. New research projects, particularly outside the USA, are aimed at development of mechanically stronger plastics, as well as reinforcing fibers, that are made from plants. One reason is environmental: computer or car parts made from the materials would eventually biodegrade. The other is economic: the new materials may be more cost-effective than oil-based plastics given the price trajectory of hydrocarbons. One key player to watch: NetComposites which is leading a UK project valued at more than $1.5 million to develop biodegradable structural prototypes.
Instead of sifting through huge amounts of technical data looking for answers to assembly problems, engineers can now benefit from 3M's new initiative -- 3M Assembly Solutions. The company has organized its wealth of adhesive and tape solutions into six typical application areas, making it easier to find the best products to solve their real-world assembly and bonding problems.
Many of the materials in this slideshow are resins or elastomers, plus reinforced materials, styrenics, and PLA masterbatches. Applications range from automotive and aerospace to industrial, consumer electronics and wearables, consumer goods, medical and healthcare, as well as sporting goods, and materials for protecting food and beverages.
Engineers trying to keep track of the ever-ballooning number of materials and machines for additive manufacturing and 3D printing now have some relief: a free searchable database with more than 350 machines and 450 different materials.
At JEC Europe Dow Automotive introduced a new ultra-fast, under-60-second molding cycle time for its commercial-grade VORAFORCE 5300 epoxy resin matrix for carbon composites. It's aimed at high-volume automotive manufacturing.
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.