[NSRCA-discussion] paint

[Bill Glaze]

No complaint on the quality of the stuff.  Our airplanes (full size air carrier Part 135) take quite a beating, both in the air and on the ground, and Imron was the best there was, at the  time.  On my El Camino, after many years, the stuff started curling up around the edges, and when it did, adhesion was so good that it peeled off the factory paint, primer, etc. down to bare metal.  IMHO, that's real adhesion.  But, again, (my opinion only,) I wouldn't use it; I prefer something with less risk potential.
Bill Glaze
  ----- Original Message ----- 
  From: Stuart Chale 
  To: 'NSRCA Mailing List' 
  Sent: Wednesday, July 12, 2006 4:03 PM
  Subject: Re: [NSRCA-discussion] paint


  You have obviously received several warnings, appropriately so, from this list.  Imron should not be the first paint that you spray if you have never sprayed before.  (I wouldn't spray it all without proper respiratory protection)  There are safer paints to apply with similar qualities.  The warnings that you have been given are correct.  Imron gives off more polyisocyanates than most other paints.  These are dangerous and can cause respiratory trouble.  I am an ER doc and have seen it several times most often from "hobby" type painters.

   

  Imron when sprayed under safe conditions is an excellent paint though.   It is highly fuel proof and has an excellent gloss.

   

  Good luck with your choice,

  Stuart Chale

   


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  From: nsrca-discussion-bounces at lists.nsrca.org [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Tim
  Sent: Wednesday, July 12, 2006 11:39 AM
  To: 'NSRCA Mailing List'
  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 

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  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? 


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