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Glue bonds to nonstick surfaces and wipes clean with ethanol
41–50 of 112 posts
Re: Glue bonds to nonstick surfaces and wipes clean with ethanol
#42> “Since ethanol is the main component of hand sanitizer, we believe it is possible to de-bond and recycle the adhesive by using hand sanitizer as a substitute in certain real-world situations,” Aida says. These sorts of environmental impact blurbs are hilarious. What kind of scenario are they envisioning where someone wants to remove and reuse a specialized adhesive bonding PTFE parts to something, but don't have et…
Maybe a 2026 remake of MacGyver?
Re: Glue bonds to nonstick surfaces and wipes clean with ethanol
#43Earlier quoted context omitted.
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 would…
I would 3D print (FDM) standoffs in PE with integrated pockets to insert magnets. You can even insert the magnets during the print if you fancy. Though my preference goes to a slide in pocket. PE sticks to itself and not much else. Packing tape is PE and adhesive. Apply PE tape to the printer bed before printing.
Yeah I have been playing with 3d printing nylon and pps versions because pure pe filament are harder to find. They also often have really really poor layer adhesion and crazy levels of warping.
PPS is not that expensive if you know some of the more specialized filament vendors.
Anyway like I said my use case is weird and may even be transient.
I can think of other use cases, but most are coatings related (Ie using Teflon as a removable masking material, etc).
The removability is actually much less interesting than the ability to strongly bond Teflon.
Re: Glue bonds to nonstick surfaces and wipes clean with ethanol
#44I'm thankful they are researching the environmental impact of this. The last thing we need is another PFAS debacle decades later.
No kidding. Fluoro-anything needs to be checked out for impact on the ozone layer, problems that happens when it burns, and problems that happens when it flakes off and gets ingested by people.
Re: Glue bonds to nonstick surfaces and wipes clean with ethanol
#45[dead]
Re: Glue bonds to nonstick surfaces and wipes clean with ethanol
#46Interesting 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…
For anybody not getting the reference, standard glue gun glue is obviously applied freshly melted and hot, and it is dissolved/debonded cleanly with isopropyl alcohol.
But does not stick to "nonstick" surfaces, which the researchers claim this does.
Re: Glue bonds to nonstick surfaces and wipes clean with ethanol
#47I'm very impressed that they were able to use glue on PTFE for...approximately anything at all. That's impressive. But I'd like to take this opportunity to present my semi-annual rant about hot glue (edit: from a hot glue gun ), instead. It's amazing stuff. It's similar to many other liquid adhesives in that you can stick things together with it (probably not PTFE, but...), and they stay pretty well stuck. But it's g…
I have an electric guitar which has an uncovered electronic cavity in the back, where the volume pot is mounted, and all wiring passing through it. I have a DPDT sliding switch there which is just held by hot glue to the side of the cavity, and recessed in a bit so that it isn't accidentally moved. It's been that way for years. From time to time it used to come off spontaneously, requiring a re-gluing, but I learned to do it better.
When redoing the wiring for one reason or another, it's trivially easy to peel the switch off with a screwdriver and remove the glue.
There isn't a compellingly better way of attaching that switch there. It has mounting screw holes but they point in the wrong direction, into the cavity. To screw it down, I would need some sort of long risers that somehow attach to the bottom of the cavity and are firm enough to resist the side to side push. Little L-brackets could work that attach to the side of the cavity. It's a very small cavity: hard to screw such brackets in, but that can be solved. Even if the brackets themselves were permanently mounted, not having to be removed when the switch is taken out, it would still take more time than with the glue.
Another use I have for glue is to secure a household internet connection. It's just a thin wire coming out of a RJ jack in the wall, in a room where kids play. The installer didn't crimp the plug into the cable insulation. The situation is that the insulation ends a few millimeters before the RJ plug, leaving a couple of bare wires that seem like 22 AWG crimped in. I "kid-proofed" this with hot glue. Hot glue is all over that plug, and about two feet of the cable is basically encased in hot glue, attached to the switch plate and along the wall right until the point it goes behind some furniture. I check on it from time to time to repair any tearing away.
Re: Glue bonds to nonstick surfaces and wipes clean with ethanol
#48Earlier quoted context omitted.
TIL. Which ones have this property, and which ones do not? How do we tell them apart? How do I identify the cheap hot glue that came with the cheap hot glue gun that I bought at Dollar General on a Saturday afternoon in 2021? It does this business just fine.
Not all hot glue comes in stick form for use in a glue gun. When I hear hot glue I first think of hide glue for example.
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Re: Glue bonds to nonstick surfaces and wipes clean with ethanol
#49This might be very useful for bonding PTFE and aluminium on cookware if it ends up being food safe.
Any reason to think this flower of fluorines (seriously, that thing looks INTENSE) would be any more environmentally safe than PFOA?
I'd be interested to see the Things I Won't Work With author's take on the synthesis given his usual reaction to fluorine chemistry
Re: Glue bonds to nonstick surfaces and wipes clean with ethanol
#50> “Since ethanol is the main component of hand sanitizer, we believe it is possible to de-bond and recycle the adhesive by using hand sanitizer as a substitute in certain real-world situations,” Aida says. These sorts of environmental impact blurbs are hilarious. What kind of scenario are they envisioning where someone wants to remove and reuse a specialized adhesive bonding PTFE parts to something, but don't have et…
Gelled solvents are useful for softening adhesives in certain situations far better than the pure substance