Sujet : Re: New circuit boards can be repeatedly recycled?
De : jl (at) *nospam* 650pot.com (john larkin)
Groupes : sci.electronics.designDate : 29. Apr 2024, 23:21:47
Autres entêtes
Message-ID : <0b303j1nk3gpq05ts6qc1r9mj2j3b5rghk@4ax.com>
References : 1
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On Mon, 29 Apr 2024 05:53:23 GMT, Jan Panteltje <
alien@comet.invalid>
wrote:
New circuit boards can be repeatedly recycled
https://www.sciencedaily.com/releases/2024/04/240426165151.htm
Source:
University of Washington
Summary:
Researchers have developed a new PCB that performs on par with traditional materials
and can be recycled repeatedly with negligible material loss.
Researchers used a solvent that transforms a type of vitrimer
-- a cutting-edge class of polymer -- into a jelly-like substance without damage,
allowing solid components to be plucked out for reuse or recycling.
With these 'vPCBs' (vitrimer printed circuit boards), researchers recovered 98% of the vitrimer and 100% of the glass fiber.
and 91% of the solvent. I wonder how much solvent it needs, and where
did the other 9% go.
I'd expect that e-waste is mostly packaging and heat sinks and line
cords and LCDs, not so much PCBs. My PC here might be a couple per
cent PCBs by weight, and less by volume. A big TV or microwave oven,
even less.