TGMRS Posted February 16 Posted February 16 Carbon fiber reinforced polymers used in 3D printing have reasonable conductivity. Polypropylene which is used as the matrix is very resistant to the conditions in chlorate cell. I haven't been able to find resistivity for cf pp but cf pla has a resistivity of around 10-100 ohm-cm. This video shows that contact resistance might be a problem. The filament seems to be expensive. So what do you people think?
Arthur Posted February 16 Posted February 16 If carbon fibre works for the anode then why not use a large piece of carbon fibre cloth (as intended for polymer layup) There are some weave patterns of carbon fibre available for low mass high strength mouldings using epoxy or polyester resins. A large square of carbon fibre could simply be the electrode, getting the electricity in could be as simple as a titanium clamp along the top edge. With the low cost of carbon fibre weave an electrode of serious size should be cheap and easy, how about a square foot or a square metre (yard and a bit!).
mx5kevin Posted February 16 Posted February 16 There's no point in thinking about it until someone tries something and describes exactly what they did. Since no one has successfully attempted it, we assume it doesn't work. With glassy carbon crucible 10cm long and 2,4cm outside diameter, trade name SIGRADUR a successful attempt was made in a chlorate cell. http://www.sciencemadness.org/talk/viewthread.php?tid=15345 For chlorates, you need an MMO anode, no other alternative is worth it. If you need a small amount, you should use a 8-10mm welding carbon rod as graphite anode. Such experiments would make sense in the case of perchlorates using only diaphragm membrane cell with a membrane like cellulose. Glassy carbon, SI, SIC, graphite it would be worth professional way made experiments. Can also try it if someone has the money to spend on it, by introducing ozone into the anode space and absorbing the gases into the cathode space. http://www.chlorates.exrockets.com/graphite/grapper.html But for someone to be able to experiment with this effectively, they need several years of experience in this topic. It is unnecessary for a beginner to think about such alternatives for production purposes, as these are misconceptions. Even an experienced professional in this field would have little chance of finding a working alternative at many times the cost. This is the category that is worth talking about if someone does it, the process succeed, and reports in detail what they did. On their own, most of these theories are useless in practice, especially if they are invented by someone who is a beginner. 1
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