Bev

We were able to remove entrapped glycols with long soak times at elevated
temps. (You might try repeated rinses.)

Of course, those tests were done on unpopulated boards.

Greg

-----Original Message-----
From: Bev Christian [mailto:[log in to unmask]]
Sent: Wednesday, September 04, 2002 11:13 AM
To: [log in to unmask]
Subject: [TN] board contaminated with glycol


Technettters,
Say you had a populated, expensive circuit pack that had been contaminated
with ethylene glycol.  Would you chuck it or clean it?  I seem to recall
that before I entered the industry that there was a time when some type of
glycol was used on making printed circuit boards(?).  The reason I mention
this, is if this were true, can glycols chemically bond at room temperature
to PCBs by more than hydrogen bonding, to the point where a water wash,
saponified or not, would not be able to remove the glycol.  I am assuming
there are no standoff issues.

regards,
Bev Christian
Research in Motion

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