4 ms·

The comment about recycling the aramid fibres from bulletproof vests amuses me. Bulletproof vests seem several orders of magnitude rarer around where I live th

• maxerickson 5y ago
  Kevlar is used for lots of things. Did they change the link to remove a statement about vests or did you read into the statement about kevlar?
  • mhandley 5y ago
    "Along with the higher capacity, lithium-sulfur batteries have sustainability advantages over other lithium-ion batteries. Sulfur is much more abundant than the cobalt of lithium-ion electrodes. In addition, the aramid fibers of the battery membrane can be recycled from old bulletproof vests."
  • et2o 5y ago
    Look at the third-to-final paragraph where it explicitly mentions recycling Kevlar vests.
• throwaway0a5e 5y ago
  Bullet proof vests, racing harnesses, etc, etc, all sorts of safety critical fiberous stuff like that ages out long before the fibers are degrading because the manufacturers make assumptions about the lifetime of the product in chemically harsh environments (for obvious ass covering reasons) and assign it an expiration date and users are not willing to say "well I use the product in a cool dry basement so I'm sure it's fine to go 2x the expiration" and accept the responsibility themselves so these products get replaced/recycled at a very high rate. As others have stated, kevlar is also used in all sorts of other applications. The material can come from wherever.
• llampx 5y ago
  Police, security and army are probably most of the demand for bulletproof vests, and the supply of used ones.
• 1234letshaveatw 5y ago
  Not a big believer in climate change huh?