Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Chemical Hand Warmer Triggers

  1. Nov 20, 2008 #1
    Does anybody have any idea of whether or not a non-metallic trigger could be used in sodium acetate heat packs. The crystalisation preocess in the packs is triggered by bending the metal disks inside them which causes heterogeneous nucleation.

    Are there any plastics which could work where scratching or bending them would expose the crystals that might then act as nucleation sites for the sodium acetate. I've heard of plastics you can get that contain filler materials, but does anybody reckon these may work or know where to get hold of them.

    I'm looking to replace the metal trigger in the pack with a plastic one for a product design application.
     
  2. jcsd
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Can you help with the solution or looking for help too?
Draft saved Draft deleted



Similar Discussions: Chemical Hand Warmer Triggers
  1. Clapping Hands. (Replies: 4)

  2. Chemical Energy (Replies: 1)

  3. Right hand thumb rule (Replies: 5)

Loading...