MATERIALS
resins or already integrated within a thermoplastic matrix. The project with Boeing demonstrates the viability of fabricating interior sidewall panels with high-performance thermoplastics reinforced with recycled carbon fi bre.” Sticking with the theme, CompPair
and Composite Recycling are collaborating to see if it’s possible to create useful material from old boat hulls. The pair are working on a new formulation that is also self healing. The partners are currently testing a combination of Composite Recycling’s recycled glass fi bres with CompPair’s healable resin, to produce a healable recycled prepreg.
MARINE DREAMS Plastic in the sea is a massive problem, and SABIC may have found a way of diverting some of that waste before it gets there, by using it as a feedstock for new material. Sanjay Mishra, GM
The new busbar
technology & footprint, specialties, says, “We’re continually expanding our LNP Elcrin iQ portfolio – and the PET waste streams used to produce these materials – to help divert more plastic from the oceans while helping our customers incorporate recycled materials in their products, achieve their carbon neutrality goals and meet consumer demands for greater sustainability. “Within the next decade, we
Recycling composites for the marine industry
anticipate upcycling 10 billion plastic bottles into higher-performing, durable
materials that deliver enhanced value to customers. SABIC is committed to working with the plastics supply chain to fi nd new solutions to address urgent environmental issues such as reducing ocean-bound plastic waste and achieving net zero carbon emissions.” The new material the company
has created is called LNP Elcrin WF0061BiQ resin and it is billed as a potential drop-in replacement for virgin PBT resins, such as those used in automotive seating and electrical enclosures. ●
Sound idea
MIT researchers have created a thin loudspeaker which they hope could be used as active noise cancellation in environments such as aircraft cockpits. It works by generating sound of the same amplitude but opposite phase, with the two sounds then cancelling each other out. To make it, the team used a laser to create small holes in a thin sheet of PET. They laminated the underside of
the perforated layer with an 8 micron-thick fi lm of PVDF, a piezoelectric material. Then a vacuum was applied, along with 80ºC heat. Vladimir Bulović, the
Fariborz Maseeh chair in emerging technology who led the research says, “It feels remarkable to take what looks like a slender sheet of paper, attach two clips to it, plug it into the headphone port of your computer, and start hearing sounds emanating from it. It
MIT researchers have developed an ultrathin loudspeaker that can turn any rigid surface into an active audio source
can be used anywhere. One just needs a smidgeon of electrical power to run it.”
www.engineerlive.com 37
Image: Felice Frankel/MIT
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