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Glue bonds to nonstick surfaces and wipes clean with ethanol

cen.acs.org

101–110 of 112 posts

Re: Glue bonds to nonstick surfaces and wipes clean with ethanol

#101
post #51

Earlier quoted context omitted.

Who says this will be a specialized adhesive? If it works as advertised, it could be a super-glue alternative with easy unglueability. That would be an attractive consumer product; and the type of product that could easily end up on someones hands.

Superglue is probably two order of magnitude stronger, so I doubt that this will replace cyanoacrylates. And while ethanol or hand sanitizer will not help much with superglue, acetone or nail polish remover will remove it. Then again, acetone will attack more materials then ethanol, so a glue that can be removed with ethanol might still be beneficial.

Imo superglue is a shitty glue - it's far too strong and weak at the same time. It's strong in the sense that if you glue two thing together, you're unlikely to get them apart without damaging them.

At the same time, superglue's brittle, meaning if you handle objects that were glued together, they're eventually gonna come apart in your hands. There's a reason smartphone screens use some special mystery glue not CA.

The problem with acetone is that you can't really get the solvent to the surface that's glued, since that's often inside the object, so it's really tricky to use. It's also toxic and attacks basically everything that's plastic or painted, resulting in a lot of damage.

Re: Glue bonds to nonstick surfaces and wipes clean with ethanol

#102

Earlier quoted context omitted.

Wow, speaking of safety -- I just looked it up to see if Un-Cure superglue/CA debonder would be safe enough to use on hands, or would just cause the chemicals to be broken down and absorbed through the skin at a fast rate too (which I personally wouldn't want), and the initial results I see say that it's ok to use on hands. Wow again.

Just like acetone.

I sensitised my hands with a single exposure to acetone, and now even isoprop gives me painful flaky fingers for days. I wish I'd worn chemical gloves.

Re: Glue bonds to nonstick surfaces and wipes clean with ethanol

#103

Earlier quoted context omitted.

Not a lot of whimsy and delight in having your glue joint fail because the delightful & whimsical website gave bad advice.

Dude, people in 2026 still think duct tape is a “great product”. It’s pretty clear people have no fucking clue what makes a good adhesive. I’ll settle for just not seeing duct tape in the 10,000 places it doesn’t belong!!

People in 2026 have never seen duct tape unless they work in hvac. Duck tape, on the other hand, is in every household. On which topic, i think you're missing the point: duck tape is never the best solution, but it's good enough in a pinch for an incredible range of applications, and it has long shelf life. Think of it as a hacker tool.

Re: Glue bonds to nonstick surfaces and wipes clean with ethanol

#104
post #66

Earlier quoted context omitted.

Why is scratched a problem? They use the same stuff in medical implants. It is chemically inert if you don't overheat it right?

PTFE is very inert, but that doesn't mean that I want to eat more of it than I have to. And as a practical matter: Once it begins flaking off, more tends to follow. I don't know if that's because of oxidation of the aluminum, or what, but it sure seems to behave that way. I mean, I'm not too awful worried about it compared to my adventures in 3D printing (with its crusty PTFE Bowden tubes). But I very deliberately ha…

We got one of the greenpans for eggs after the last ptfe one chipped. It is ceramic glass coating of some sort. About halfway between ptfe and mirror stainless for sticking. Better than that if you keep the temp low. Kinda pricey though.

Re: Glue bonds to nonstick surfaces and wipes clean with ethanol

#105
post #61

Earlier quoted context omitted.

Also… Uncure is a popular brand of cyanoacrylate remover. This is already a solved problem it seems.

Never heard that name, but according to their safety data sheet [1] it is 95+ % dimethylformamide [2]. Not too different from acetone, with a additional dimethylamin group. Acetone-free nail polish remover usually contains primarily ethyl acetate [3] which is also structurally similar. [1] https://bsi-inc.com/sds_pdf/sds_un_cure.pdf [2] https://en.wikipedia.org/wiki/Dimethylformamide [3] https://en.wikipedia.org/wiki…

DMF is quite different than acetone.

As a chemist it’s a highly polar, very high boiling point solvent that is the “go to” when you can’t find a solvent your reactants dissolve in.

Acetone is less polar, more chemically reactive and lower boiling point. It’s rarely used as a reaction solvent due to its reactivity, but it is common in crystallizations.

Both are quite non-toxic (your body makes small amounts of acetone!), but I recall a cancer risk with high exposures of DMF (the example was tannery workers who sprayed it without any safety gear and got soaked).

Re: Glue bonds to nonstick surfaces and wipes clean with ethanol

#106
post #66

Earlier quoted context omitted.

PTFE is very inert, but that doesn't mean that I want to eat more of it than I have to. And as a practical matter: Once it begins flaking off, more tends to follow. I don't know if that's because of oxidation of the aluminum, or what, but it sure seems to behave that way. I mean, I'm not too awful worried about it compared to my adventures in 3D printing (with its crusty PTFE Bowden tubes). But I very deliberately ha…

We got one of the greenpans for eggs after the last ptfe one chipped. It is ceramic glass coating of some sort. About halfway between ptfe and mirror stainless for sticking. Better than that if you keep the temp low. Kinda pricey though.

I've looked at those and they do seem nice.

This one was very cheap, at Aldi; if it dies, it dies. I try to avoid spending too much money on cookware because whenever I live with other people, the tendency is for them to find some way to absolutely destroy it.

And by that, I mean like: I don't even know what temperature it is that copper gets drippy-melty at, but they managed to exceed it.

Re: Glue bonds to nonstick surfaces and wipes clean with ethanol

#107
post #80

Earlier quoted context omitted.

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

I made the same error as you, before realizing that in this molecule the fluorine is bounded to a carbon not an oxygen. Fluorine once bounded to a carbon won't move from there unless it receive a lot's of energy. A fluorine bounded to an oxygen really wants to be elsewhere and it's ready to pay a lot's of energy to make it happen! So the scary looking part of that chemical is incredibly stable and this is what make t…

I'm mostly curious about how they managed to get all of the scary looking parts crammed onto that one end and how hairy that process was.

Re: Glue bonds to nonstick surfaces and wipes clean with ethanol

#108
post #103

Earlier quoted context omitted.

Dude, people in 2026 still think duct tape is a “great product”. It’s pretty clear people have no fucking clue what makes a good adhesive. I’ll settle for just not seeing duct tape in the 10,000 places it doesn’t belong!!

People in 2026 have never seen duct tape unless they work in hvac. Duck tape, on the other hand, is in every household. On which topic, i think you're missing the point: duck tape is never the best solution, but it's good enough in a pinch for an incredible range of applications, and it has long shelf life. Think of it as a hacker tool.

I think about removing its shit adhesive from things that shouldn’t have been poorly secured with layer after layer of the wrong thing.

Re: Glue bonds to nonstick surfaces and wipes clean with ethanol

#109
post #51

Earlier quoted context omitted.

Superglue is probably two order of magnitude stronger, so I doubt that this will replace cyanoacrylates. And while ethanol or hand sanitizer will not help much with superglue, acetone or nail polish remover will remove it. Then again, acetone will attack more materials then ethanol, so a glue that can be removed with ethanol might still be beneficial.

Imo superglue is a shitty glue - it's far too strong and weak at the same time. It's strong in the sense that if you glue two thing together, you're unlikely to get them apart without damaging them. At the same time, superglue's brittle, meaning if you handle objects that were glued together, they're eventually gonna come apart in your hands. There's a reason smartphone screens use some special mystery glue not CA. T…

> There's a reason smartphone screens use some special mystery glue not CA.

AFAIK, smartphone glues tend to be acrylic adhesives, which are just as brittle as cyanoacrylate. They get around this by not bonding the screen directly to the chassis with the glue, but having the adhesive carried on tape.

Re: Glue bonds to nonstick surfaces and wipes clean with ethanol

#110
post #103

Earlier quoted context omitted.

People in 2026 have never seen duct tape unless they work in hvac. Duck tape, on the other hand, is in every household. On which topic, i think you're missing the point: duck tape is never the best solution, but it's good enough in a pinch for an incredible range of applications, and it has long shelf life. Think of it as a hacker tool.

I think about removing its shit adhesive from things that shouldn’t have been poorly secured with layer after layer of the wrong thing.

Amen, but hear me out, a bodger is always going to do damage. I've had to remove an unholy bodge of rubber glue and epoxy, both used on the sane repair by the same man. Rubber first, epoxy on top when the rubber failed.

That man is now dead, and ornaments are safe again. That guy was _enthusiastic_

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