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If you want simple hydrophobic properties, just use PTFE coating. It has its limitations but you don't have to wait for commercialization as the tech is pretty
by sansnomme 7y ago
If you want simple hydrophobic properties, just use PTFE coating. It has its limitations but you don't have to wait for commercialization as the tech is pretty mature.
- maxden 7y agoThere is also the liquiGlide developed from MIT research https://www.wired.com/2015/07/physics-behind-no-stick-ketchup-mayo-bottles/ https://www.wired.com/2015/07/physics-behind-no-stick-ketchu...
- newnewpdro 7y agoI wonder if PTFE coatings would serve as an effective bottom coat, I've never heard of it being used on sailboats but it seems like an obvious avenue to explore. The tech. described in TFA sounds like something that would make for an awful bottom coat, since such surfaces tend to promote growth by providing something attachable.
- sudhirj 7y agoIt sounds incredibly toxic, though - Polytetrafluoroethylene. Would be nicer to just point lasers and the existing cans or glass bottles and be done with it.
- uoaei 7y agoThe hydrophobic properties of the OP are from a cushion of air. So whatever you're keeping in the bottle shouldn't degrade when exposed to oxygen for that to work.
- cl0ckt0wer 7y agoI hope you use carbon neutral energy for those lasers.
- Dylan16807 7y agoDoes it sound incredibly toxic when spelled 'teflon'? It's pretty good on the food-safety front.
- ahje 7y agoBut not all good: https://en.wikipedia.org/wiki/Polytetrafluoroethylene#Ecotoxicity https://en.wikipedia.org/wiki/Polytetrafluoroethylene#Ecotox...
- Dylan16807 7y agoSo there are two main issues. One is only relevant at hundreds of degrees, so it's a pan problem and not a can/bottle problem. The other is a separate chemical that's sometimes used in the production, and the solution is simply to not use that chemical. So not perfect, but pretty good!
- hanniabu 7y ago> and the solution is simply to not use that chemical If it were that simple then they would already not be using it
- Dylan16807 7y ago> If it were that simple then they would already not be using it Yeah, did you read the link? "several manufacturers have entirely discontinued its use" But also your statement isn't really true as a general rule. Sometimes it's very straightforward to avoid an ingredient but it costs half a penny extra.
- mikorym 7y agoIf you call it Teflon, would you be less scared of the name?
- appleflaxen 7y agoNo. Teflon manufacture has led to long-term contamination of waterways, plus illness caused be workers exposure ("teflon flu"). So I would prefer nanoengineering to manipulate surface tension.
- akiselev 7y ago> So I would prefer nanoengineering to manipulate surface tension. Nanotoxicity is a very poorly understood field and any nanomaterials are at the very least likely to flake away bits that are similar to asbestos.