8 comments

  • ble 6 minutes ago
    Interesting that it seems like the application method is to melt the glue:

    > To test its adhesive strength, researchers first glued two untreated polytetrafluoroethylene (PTFE) plates by sandwiching molten CyclicFP-fmoc between them and letting it cool at room temperature for 10 min.

    Also notable that the glue substance is reusable:

    > Remarkably, a simple ethanol wash completely stripped CyclicFP-fmoc from the target PTFE plates, leaving no trace behind. The recovered adhesive proved repeatedly reusable, reliably maintaining its adhesive strength of ~1.2 ± 0.1 MPa across multiple cycles.

    Perhaps hot glue guns are going to get an update ;)

  • oflannabhra 30 minutes ago
    I guess one of my favorite old-school websites will need to get updated, ThisToThat [0].

    [0] - https://www.thistothat.com

    • DannyBee 14 minutes ago
      This website often suggests totally bad ideas, like brittle epoxies for bonds they shouldn't be used for.

      The truth is nowadays you can just choose your favorite brand and they almost certainly have a correct, and good, adhesive selector.

      For example, for loctite, you should just use: https://www.henkel-adhesives-selector.com/

      • oflannabhra 4 minutes ago
        maybe, but where is the whimsy or delight in that?
  • oasisbob 17 minutes ago
    Isn't high-ductility associated with creep, especially under static loads? That would seem to be a downside of an adhesive like this.
  • pavel_lishin 1 hour ago
    My mind immediately jumped to The Mote In God's Eye.
  • squigz 17 minutes ago
    In what context would one re-use a glue like this?
    • DannyBee 9 minutes ago
      I have a weird use case, but this is actually wildly useful to me.

      I use teflon (sometimes nylon, but mostly teflon) painter pyramids/holders/etc, because i spray finish stuff that is very good at adhering to lots of things, and are acetone based - VOC compliance pretty much forced acetone into solvent based stuff. This in turn pretty much makes finishes melt into anything except PE, nylon, teflon, even if they wouldn't otherwise.

      To keep the pyramids and things where i want them, i have magnets glued into them. But because it's PFTE, the magnets don't really stay adhered well, even with (currently) specialized adhesives and i end up regluing them after every few times, often before the project finishes.

      What i really want is an adhesive like this one, where i can glue the magnets in, but also remove them after the project finishes, because i'll go soak the pyramids in solvent or something to clean them, but don't want to damage any magnet coatings.

  • butvacuum 1 hour ago
    Is there really a use for this(temporary adhesives) outside of Fixturing?
    • jesperwe 56 minutes ago
      The marine industry would love a (non water soluble) glue that achieves structural strength on PTFE and POM.
    • TeMPOraL 1 hour ago
      Are you asking if there's use for temporarily sticking stuff to other stuff?

      Yes, plenty. Especially if it sticks well while needed, and then can be non-destructively undone when no longer needed.

      • bluGill 40 minutes ago
        That is generally what fixturing implies. A temporary bond that you use while making a part, and then remove when the part is complete.
        • lotu 22 minutes ago
          I think it could also be used outside of making a part. For example you want to setup sensor on a surface but it's important not to damage the surface, like the outside of a boat. This would be excellent for that.
  • baxuz 52 minutes ago
    This might be very useful for bonding PTFE and aluminium on cookware if it ends up being food safe.
    • dcrazy 41 minutes ago
      Any reason to think this flower of fluorines (seriously, that thing looks INTENSE) would be any more environmentally safe than PFOA?
  • yk 1 hour ago
    On the left hand side we see a lot very unhappy carbon.