<br><font size=2 face="sans-serif">Richard-you are fine, nothing wrong
here.</font>
<br>
<br><font size=2 face="sans-serif">(Wayne-O,,,,,good thing this guys not
in our district)</font>
<br><font size=2 face="sans-serif"><br>
<br>
<br>
Gray Fowler<br>
Senior Principal Chemical Engineer<br>
Radome and Composites Engineering<br>
Raytheon</font>
<br>
<br>
<br>
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<td width=40%><font size=1 face="sans-serif"><b>"Richard Strickland"
<richard.s@allied-callaway.com></b> </font>
<br><font size=1 face="sans-serif">Sent by: nsrca-discussion-bounces@lists.nsrca.org</font>
<p><font size=1 face="sans-serif">07/12/2006 02:51 PM</font>
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<div align=center><font size=1 face="sans-serif">Please respond to<br>
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<div align=right><font size=1 face="sans-serif">Subject</font></div>
<td><font size=1 face="sans-serif">Re: [NSRCA-discussion] paint(and E exhaust)</font></table>
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<br><font size=2 color=#000080 face="Arial">Speaking of electric battery
exhaust—and I know you guys are going to think I’ve lost it—very occasionally
I could swear I’ve seen a bit of some kind of trailing ‘exhaust’ looking
vapor on my electrics. Has anyone else experienced that (and will
admit it) or have I just lost my mind? again.</font>
<p><font size=2 color=#000080 face="Arial"> </font>
<p><font size=2 color=#000080 face="Arial">RS</font>
<p><font size=2 color=#000080 face="Arial"> </font>
<p><font size=2 face="Tahoma">-----Original Message-----<b><br>
From:</b> nsrca-discussion-bounces@lists.nsrca.org [mailto:nsrca-discussion-bounces@lists.nsrca.org]<b>On
Behalf Of </b>Gray E Fowler<b><br>
Sent:</b> Wednesday, July 12, 2006 1:14 PM<b><br>
To:</b> NSRCA Mailing List<b><br>
Subject:</b> Re: [NSRCA-discussion] paint</font>
<p><font size=3 face="Times New Roman"> </font>
<p><font size=2 face="sans-serif"><br>
Tim</font><font size=3 face="Times New Roman"> <br>
</font><font size=2 face="sans-serif"><br>
I am unaware of Imron properties. Clear coat is a protection for some systems
that are not fuel proof and for pigmented car systems that absolutely require
a reactive clear coat. I do not trust that a paint shop person is aware
of the nitromethane chemical resistance of Imron. Pehaps someone on this
list does know.</font><font size=3 face="Times New Roman"> <br>
</font><font size=2 face="sans-serif"><br>
Single stage paints, such as PPG DBU etc are a non reactive carrier resin
pigmented with a color and fillers. They basically "dry" or evaporate
a solvent and what is left behind is the non reacted resin and color. Clearcoats
are reactive, which is a thermosetting polymer-non reversable. Single stage
paints dry and then can be removed with a slovent wipe, or fuel on your
plane.</font><font size=3 face="Times New Roman"> <br>
</font><font size=2 face="sans-serif"><br>
But! it is important tp point out that single stage paints are not affected
by electric battery exhaust, except for the occasional unbalanced cell
act.</font><font size=3 face="Times New Roman"> </font><font size=2 face="sans-serif"><br>
<br>
<br>
<br>
Gray Fowler<br>
Senior Principal Chemical Engineer<br>
Radome and Composites Engineering<br>
Raytheon</font><font size=3 face="Times New Roman"> <br>
</font>
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<td width=48%><font size=1 face="sans-serif"><b>"Tim" <twortkoetter@yahoo.com></b>
<br>
Sent by: nsrca-discussion-bounces@lists.nsrca.org</font><font size=3 face="Times New Roman">
</font>
<p><font size=1 face="sans-serif">07/12/2006 10:39 AM</font><font size=3 face="Times New Roman">
</font>
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<td><font size=1 face="sans-serif">Re: [NSRCA-discussion] paint</font></table>
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</font><font size=2 color=#000080 face="Arial"><br>
I am getting ready to spray imron. I have never painted anything.
I told the paint shop what I was using it for and they said I didn’t
need a clear and I didn’t get any reducer. What type of reducer
and how much should I use for this type of paint. Also why do you
use clear over a single stage paint. </font><font size=3 face="Times New Roman">
</font>
<p><font size=2 color=#000080 face="Arial"> </font><font size=3 face="Times New Roman">
</font>
<p><font size=2 color=#000080 face="Arial">Tim</font><font size=3 face="Times New Roman">
</font>
<p><font size=2 color=#000080 face="Arial"> </font><font size=3 face="Times New Roman">
</font>
<p><font size=2 face="Tahoma">-----Original Message-----<b><br>
From:</b> nsrca-discussion-bounces@lists.nsrca.org [mailto:nsrca-discussion-bounces@lists.nsrca.org]
<b>On Behalf Of </b>Gray E Fowler<b><br>
Sent:</b> Wednesday, July 12, 2006 8:17 AM<b><br>
To:</b> NSRCA Mailing List<b><br>
Subject:</b> Re: [NSRCA-discussion] paint</font><font size=3 face="Times New Roman">
</font>
<p><font size=3 face="Times New Roman"> </font>
<p><font size=2 face="sans-serif"><br>
Robert</font><font size=3 face="Times New Roman"> </font><font size=2 face="sans-serif"><br>
<br>
Humidity is not a problem, dew point is. Since it is warm now in most places
this should not be a problem. The amount of reducer called out by
the paint manufacturer has two purposes, <br>
<br>
1. Reduce the viscosity so a standard paint gun can atomize</font><font size=3 face="Times New Roman">
</font><font size=2 face="sans-serif"><br>
2. Only reduce the viscosity barely enough as to meet EPA volatile organic
emmision requirements <br>
<br>
The PPG "reducer" amounts allow the car painting guy to seriously
"lay it on" with out fear of runs or overspray. Unfortunately
laying it on an airplane increases weight. A thicker clear coat will not
really protect your plane better than a thinner coat, so it is just weight.
Adding more reducer (its really a blend of different solvents) will
allow for thinner coats, less overspray, but can increase runs. <br>
<br>
The reducer like I mentioned is a blend of solvents, and all of this 100%
evaporates and has nothing to do with the urethane chemical reaction that
cures the clearcoat. You can add as much reducer as you want without reprisal...except
from the EPA, which I doubt will go after an individual pattern guy...but
I could be wrong. So once you are comfortable with increasing your
local pollution level...add that 200% reducer!!!</font><font size=3 face="Times New Roman">
</font><font size=2 face="sans-serif"><br>
<br>
<br>
<br>
Gray Fowler<br>
Senior Principal Chemical Engineer<br>
Radome and Composites Engineering<br>
Raytheon</font><font size=3 face="Times New Roman"> </font>
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<td width=48%><font size=1 face="sans-serif"><b>"Robert Mairs"
<robertm@sssnet.com></b> <br>
Sent by: nsrca-discussion-bounces@lists.nsrca.org</font><font size=3 face="Times New Roman">
</font>
<p><font size=1 face="sans-serif">07/12/2006 05:42 AM</font><font size=3 face="Times New Roman">
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</font><font size=2 face="Courier New"><br>
<br>
Couple of painting questions.<br>
<br>
Weathers turned to crap around here again. How much humidity is to
humid to <br>
paint?<br>
<br>
I've been reading where the jet guys are reducing they're clear coat to
a <br>
200% ratio. They think it's great. Anybody tried this? <br>
<br>
<br>
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