| ▲ | echoangle 2 days ago |
| It also helps that they are made from aluminum which doesn’t rust like iron does. |
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| ▲ | hdrz 2 days ago | parent | next [-] |
| It rusts just like iron, but the rust (AlOx, or alumina) stays bonded to the metal and actually protects it. |
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| ▲ | lloeki 2 days ago | parent | next [-] | | Rust being literal Fe2O3 makes a convincing argument that aluminium sure oxidises but doesn't rust pretty much by definition ;) | |
| ▲ | wongarsu 2 days ago | parent | prev [-] | | In other words: it rusts, but it doesn't rust like iron. It rusts in a much less destructive way because the aluminum oxide protects the rest of the aluminum from oxygen | | |
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| ▲ | euroderf 2 days ago | parent | prev [-] |
| And epoxy binds to aluminum just fine ? Epoxy is weird. What solid material does it NOT bond to ? |
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| ▲ | AlotOfReading 2 days ago | parent | next [-] | | Polyethylene, like they use in food containers. Virtually nothing sticks to it unless specifically designed. | |
| ▲ | mjanx123 2 days ago | parent | prev | next [-] | | It does not bond to polypropylene and other low surface energy plastics | | |
| ▲ | psd1 2 days ago | parent [-] | | Terminology question - I understood those to be "high-energy" surfaces, because the chains are strongly bound. Is it a typo, or am I wrong? | | |
| ▲ | mjanx123 11 hours ago | parent [-] | | It is really called low energy, it refers to the low attractive force of the surface, liquids bead up and do not wetten, in epoxy that results in small contact area and a weak bond, on a high surface energy material it flows into all the crannies and has enormous contact area and a strong bond. |
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| ▲ | ridgeguy 2 days ago | parent | prev [-] | | Teflon. | | |
| ▲ | cen0b 2 days ago | parent [-] | | Yummy, my favorite! | | |
| ▲ | echoangle 2 days ago | parent [-] | | Actually should be mostly fine since it’s pretty inert, unless you eat the stuff used to make it. | | |
| ▲ | euroderf a day ago | parent [-] | | Like, actually making food atop a non-stick surface that flakes. |
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