• New circuit boards can be repeatedly recycled?

    From Jan Panteltje@21:1/5 to All on Mon Apr 29 05:53:23 2024
    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.


    Repair cracked PCBs??

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  • From john larkin@21:1/5 to All on Mon Apr 29 14:21:47 2024
    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.

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