Polyurethane Foam

Discussion in 'Boat Design' started by Bart01, Sep 23, 2008.

  1. Bart01
    Joined: Sep 2008
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    Bart01 Junior Member

    Hey Guys,

    Does anyone has an idea if PU foams are used in the Boat Manufactury Industry? I'm currently looking at this solution but I am wondering if these foams are already in used somewhere by professionals ... ?

    Does anyone can Help?

    Thx

    Bart
     
  2. grob
    Joined: Oct 2002
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    grob www.windknife.com

    Most rudders and centreboards for Dinghies such as the laser are made from polyurethane foam.

    Gareth
     
  3. Fanie
    Joined: Oct 2007
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    Fanie Fanie

    If it's the two-part foam you pour then it's not really a good marine foam. It absorbs water over time and is more of a heat insulation for dry (out of water) places.
     
  4. johnnykidd
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    johnnykidd Junior Member

    years ago i went to the chicago boat exibit.......they gave me a 2 part sample of it in air pressureized containers that mixed out of one nozzle....the boat we were building at the time had a deep v in it only half way then the v got smaller as u went to the back of the boat.....we thought it would be a good sound deading point....it was....then i used it for a floor job.....took out the floor and laid in the new on then i thought floatation ????????.....ok dill a small hole in the floor fill it with the foam there u go.......ok forgot about the expansion and it poped up the floor.........live and learn
     
  5. Butch .H
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    Butch .H Senior Member

    Check some of my pics and you will see what a idiot can do with polly foam
     
  6. johnnykidd
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    johnnykidd Junior Member

    where the pics butch........i would like to see
     
  7. Butch .H
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    Butch .H Senior Member

    Jonny for your vewing pleasure .This boat was coverd in the stuff.The chap I bought her from is a idiot
     

    Attached Files:

  8. KnottyBuoyz
    Joined: Jul 2006
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    KnottyBuoyz Provocateur & Raconteur

    Click the link for the English PDF near the bottom of the page...

    http://www.finnfoam.fi/

    You'll find this PU foam has been used in boats, although unconventional boats.
     
  9. johnnykidd
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    johnnykidd Junior Member

    ouch......i didnt know it came in green.....it kinda looks like my friends garage wall........lol.......maybe he tried to glue it back together with the stuff u think......what did u do about it ?
     
  10. Wynand N
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    Wynand N Retired Steelboatbuilder

    The foam they use in the gold mines over here that comes in aerosol cans are especially dyed green.... to identify it when stolen:!:
     
  11. Butch .H
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    Butch .H Senior Member

    Wynand thats interesting. I didnt ask the chap where had worked prior to spinning the boat fundi story.I realy dont care what colour this stuff is or if it comes from outer space.Knowing him he stole the stuff . I removed about 7 garbage bags of the stuff. He used it to try and stop the leaks in the deck. Problem I could fit my head through some of these holes.No problem that six or seven cans cant fix:D
     
  12. Wynand N
    Joined: Oct 2004
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    Wynand N Retired Steelboatbuilder

    Here is the proof Butch - all are green with different shades. BTW, this one was obtained with permission from a senior mining official.
     

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  13. daiquiri
    Joined: May 2004
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    Location: Italy (Garda Lake) and Croatia (Istria)

    daiquiri Engineering and Design

    Yeah, that's what they all say. :D
     
  14. Bart01
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    Bart01 Junior Member

    Sorry, are you sure it is PU foam? Looks more like Polystyrene Foam I Think ... Let me know if I missed something.

    Thx anyway for your income ;)
     

  15. Bart01
    Joined: Sep 2008
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    Bart01 Junior Member

    Thx Guys,

    indeed, I didn't thought that PU in contact with water could bring such issues .. lol ... I think I will try first to use it in "free water" area lol. ..

    Another stupid question ^^ Do you think such foam could replace the epoxy/Glass Fiber of the body coat? Physical properties of PU could fit (weight, strenght ...). Did anyone already tried it?
     
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