UV protection from paint

Discussion in 'Finishing Techniques' started by BBerson, Apr 27, 2008.

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  1. Jul 17, 2016 #21

    proppastie

    proppastie

    proppastie

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    old thread....A professional fabric guy near me claims he uses Epoxy Primer for the UV barrier, has anyone else heard of that???? Of course he also claims it is not an issue because every body keeps their fabric airplanes inside.
     
  2. Jul 17, 2016 #22

    TFF

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    Stits has you shine a flashlight on the silver and if you see light you dont have enough. I ended not having enough and had to add another coat. Im sure just about anything that can block the light is OK. The questions are how much will it need, will it crack, and will it stay attached? The fabric I cut off my plane was dope through silver then car paint for gloss. It was glossy and cracked everywhere. Everyone wants gloss now and the quick dirty way is car paint. You cant add the amount of flex agent that comes in real airplane paint; its not bound in like paint made with flex. It really is a stop gap. Pretty sure this is car paint Custom | Jim Kimball Enterprises They can also afford a $100,000 recover when times comes to make it exactly the same. I did my plane in Stits because I know I do not have to worry about anything but my craftsmanship, hint not as good as that Pitts.
     
  3. Jul 17, 2016 #23

    BBerson

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    Never heard of that. Epoxy is too brittle for fabric, in my opinion. Epoxy doesn't last in the sun either. Urethane or Exterior acrylic would be my choice.
     
  4. Jul 18, 2016 #24

    nucleus

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    Titanium dioxide blocks UV, it and zinc oxide are used in the physical block sunscreens.

    Titanium Dioxide is the pigment in white paint, and since the pigment is its own UV protection, this is why white paint is the most durable.

    Silver is the least durable paint color.
     
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  5. Jul 18, 2016 #25

    BJC

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    Why is that?


    BJC
     
  6. Jul 18, 2016 #26

    proppastie

    proppastie

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    I always heard Red was the worst but I doubt there is a universal truth in that statement.
     
  7. Jul 18, 2016 #27

    BJC

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    Blue paint fails quicker than other colors down here where the uv index often is above 10. I haven't seen that problem with silver. Honda had a batch of red cars whose clear coat quickly failed.

    We are discussing durability wrt uv, aren't we?


    BJC
     
  8. Jul 23, 2016 #28

    wsimpso1

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    Jim Weir (of RST) told us a long time ago that metallic paints do not de-tune his antennas. The pieces of metal in the paint are tiny and electrically insulated from each other by the resin system of the paint.

    Jim also told us a long time ago that carbon fiber structures will destroy the ability of an internal antenna to work. Each fiber in the skin fabric is electrically conductive and runs from edge to edge of the laminated part. That sort of structure either must use external antenna or fiberglass in the regions where antenna are used.

    Billski
     
  9. Jul 23, 2016 #29

    Jon Ferguson

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  10. Jul 23, 2016 #30

    BBerson

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