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Date: | Wed, 15 Apr 2015 15:23:06 -0500 |
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Good afternoon all,
I have a silly question. We conformally coat using a common solvent based
acrylic coating. One process control method is to periodically measure
coating viscosity using a Zahn #2 cup, which works well for this particular
coating that has about a 55-60 second flow. I am finding that when this
coating is thinned down for spray, the times are down in the 15-18 second
range and the variation is increasing.
So, my question - is there a style of viscosity dip cup, e.g. Ford, DIN,
etc., that is more amenable to thin viscosity coatings? It is understood
that a precision instrument like a Brookfield viscometer would be
preferrable, but production is NOT going to let me get a few dozen of them.
Thanks.
Doug Pauls
Principal Materials and Process Engineer
Rockwell Collins
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