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Date: | Mon, 5 Jun 1995 11:01:42 -0400 |
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Mr. Willis,
As far as I know, from my dealings as vice-chair of the Solder Mask Task
Group, no such reliable test method exists. You might look for a method
which examines the change in capacitance with curing time. I saw a
demonstration of it a few years ago, but never had the opportunity to pursue
the science. The basic theory is that an uncured solder mask is applied over
a test pattern and the resistivity and capacitance are measured as the cure
cycle goes along. When you have reached a point at which the two values are
only nominally changing, you have reached full cure.
I wish I could be of more help. I guess memory is the first thing to go.
Doug Pauls aka [log in to unmask]
Contamination Studies Laboratories.
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