Rich,
The one to answer this would probably be Lamar Young at SCS in
Indianapolis. I know that in our Parylene machines, we regularly clean
the pyrolysis tube where the dimer decomposes to the monomer and the
reaction occurs. I don't think contaminants on the board would have much
effect, other than perhaps interfering with adhesion. Do you have much
unused dimer at the end of a deposition run? If so, does it look really
burnt? Is your dimer powder old or has it been stored improperly?
Doug Pauls
From: Richard Kraszewski <[log in to unmask]>
To: <[log in to unmask]>
Date: 08/28/2013 03:54 PM
Subject: [TN] Poisoning of Parylene Polymerization
Sent by: TechNet <[log in to unmask]>
Is anyone aware of any specific contaminants that can poison the
polymerization process in parylene type coatings?
Rich Kraszewski
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