Carbon Black/epoxy degradation in NaOH
Carbon Black/epoxy degradation in NaOH
(OP)
hai there, can any1 tell me what has happen in the picture attached? The material used is Carbon Black filler/epoxy immerse into 2wt.% NaOH for corrosion test using tafel, 7mv/s scan rate is used.
CB filler used is electrical type, come in large fibre and milled to micro size.
CB is indicate by a straight long fibre at the lower right.
Is there a reaction between NaOH and CB cause this? I seem can't find it anywhere in the website and book
CB filler used is electrical type, come in large fibre and milled to micro size.
CB is indicate by a straight long fibre at the lower right.
Is there a reaction between NaOH and CB cause this? I seem can't find it anywhere in the website and book





RE: Carbon Black/epoxy degradation in NaOH
RE: Carbon Black/epoxy degradation in NaOH
this is how they processed, the carbon black is mixed with liquid epoxy then was cured with amine.
finally it was used in potentiostat
it doesn't exposed to any other condition like uv and heat.
the epoxy and hardener used is 10 part to 1 part.
file name carbon black a ; is before immerse into NaOH
file name cb NaOH1 is after immersion in NaOH solutions
it doesn't seem to occur in NaCl and HCl solutions. is it possible this is due to the curing process?