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Copper chloride corrosion of GFN 30%

Copper chloride corrosion of GFN 30%

Copper chloride corrosion of GFN 30%

(OP)
Does anybody have any experience of glass filled nylon 30%, being degraded by copper chloride.  The GFN components are basically turning so soft you can crumble them between your fingers.  

I have an application where there purified water is used as a coolant.  The purified water is chlorinated (to kill bacteria i expect).  The system runs at around 40-60 degrees C, and a lot of copper piping is used in the heat exchanger to cool the reverse osmosis water.  Also 7-8 barg pressure

A few things ring bells; chlorinated water, elevated temp, pressure and copper piping.  Would the purified water leach minerals from the copper pipe, which would in turn mix with the copper causing copper chloride?  I believe GFN and copper chloride are a no no.  How bad would the corrosion be?  

RE: Copper chloride corrosion of GFN 30%

Is the problem all over or near where you add the Chlorine?

Hypochlorous acid will work on nylon. Also nylon will hydrolyze under certain conditions. I don't have any reasouces to call on to wee if Cu+ your other conditions would be condusive to hydrolysis.
For your information small amounts of Copper salts are added to molten nylon for heat stability of the finished product.  

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