[NSRCA-discussion] paint

Wed Jul 12 12:21:49 AKDT 2006

I'll show my age. What ever happened to good ol' Aerogloss?

-----Original Message-----
From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of twtaylor
Sent: Wednesday, July 12, 2006 3:40 PM
To: 'NSRCA Mailing List'
Subject: Re: [NSRCA-discussion] paint

If you're going with electric why bother to use fuel proof paint?

  _____  

From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Ed Miller
Sent: Wednesday, July 12, 2006 3:33 PM
To: NSRCA Mailing List
Subject: Re: [NSRCA-discussion] paint

Imron, if true Imron, is both very expensive and fuel proof. However I do
not believe it is fire proof for the electron crowd.............
Ed M.
----- Original Message ----- 
From: WGALLIGAN <mailto:wgalligan at goodsonacura.com>  
To: NSRCA Mailing List <mailto:nsrca-discussion at lists.nsrca.org>  
Sent: Wednesday, July 12, 2006 2:44 PM
Subject: Re: [NSRCA-discussion] paint

This is such a delightful enlightenment on battery exhaust and cell
balancing acts... pertaining to chemically stimulated painted model aircraft
surfaces.
----- Original Message ----- 
From: Gray E Fowler <mailto:gfowler at raytheon.com>  
To: NSRCA Mailing List <mailto:nsrca-discussion at lists.nsrca.org>  
Sent: Wednesday, July 12, 2006 11:13 AM
Subject: Re: [NSRCA-discussion] paint

Tim 

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. 

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. 

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. 

Gray Fowler
Senior Principal Chemical Engineer
Radome and Composites Engineering
Raytheon 

"Tim" <twortkoetter at yahoo.com> 
Sent by: nsrca-discussion-bounces at lists.nsrca.org 
07/12/2006 10:39 AM 

Please respond to
NSRCA Mailing List <nsrca-discussion at lists.nsrca.org>

To
"'NSRCA Mailing List'" <nsrca-discussion at lists.nsrca.org> 

cc

Subject
Re: [NSRCA-discussion] paint

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.   
Tim 
-----Original Message-----
From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Gray E Fowler
Sent: Wednesday, July 12, 2006 8:17 AM
To: NSRCA Mailing List
Subject: Re: [NSRCA-discussion] paint 

Robert 

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, 

1. Reduce the viscosity so a standard paint gun can atomize 
2. Only reduce the viscosity barely enough as to meet EPA volatile organic
emmision requirements 

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. 

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!!! 

Gray Fowler
Senior Principal Chemical Engineer
Radome and Composites Engineering
Raytheon 

"Robert Mairs" <robertm at sssnet.com> 
Sent by: nsrca-discussion-bounces at lists.nsrca.org 
07/12/2006 05:42 AM 

Please respond to
NSRCA Mailing List <nsrca-discussion at lists.nsrca.org>

To
"NSRCA Mailing List" <nsrca-discussion at lists.nsrca.org> 

cc

Subject
[NSRCA-discussion] paint

Couple of painting questions.

Weathers turned to crap around here again.  How much humidity is to humid to

paint?

I've been reading where the jet guys are reducing they're clear coat to a 
200% ratio.  They think it's great.  Anybody tried this? 

_______________________________________________
NSRCA-discussion mailing list
NSRCA-discussion at lists.nsrca.org
http://lists.nsrca.org/mailman/listinfo/nsrca-discussion____________________
___________________________
NSRCA-discussion mailing list
NSRCA-discussion at lists.nsrca.org
http://lists.nsrca.org/mailman/listinfo/nsrca-discussion 

  _____  

_______________________________________________
NSRCA-discussion mailing list
NSRCA-discussion at lists.nsrca.org
http://lists.nsrca.org/mailman/listinfo/nsrca-discussion

  _____  

_______________________________________________
NSRCA-discussion mailing list
NSRCA-discussion at lists.nsrca.org
http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.nsrca.org/pipermail/nsrca-discussion/attachments/20060712/af0564aa/attachment-0001.html 