Repair of polypropylene dinghy hull

Discussion in 'Boatbuilding' started by Bill Spence, Mar 13, 2003.

Page 2 of 2
  1. mydauphin
    Joined: Apr 2007
    Posts: 2,161
    Likes: 53, Points: 48, Legacy Rep: 575
    Location: Florida

    mydauphin Senior Member

    Amazingly, I used 5200 with some good results. Drill holes to act as physical attachment points and to prevent further cracking.
     
    mydauphin, Aug 10, 2010
    #16
  2. Yellowjacket
    Joined: May 2009
    Posts: 664
    Likes: 113, Points: 43, Legacy Rep: 447
    Location: Landlocked...

    Yellowjacket Senior Member

    Most automobile bumper covers are polyproplene. There is a two part epoxy that is made for repairing them, that is more flexible than typical epoxy and is deisgned to stick to polyproplene. If you used that with a fiberglass patch you could probably repair a crack or weak point or crack with that.
     
    Yellowjacket, Aug 10, 2010
    #17
  3. pistnbroke
    Joined: Jan 2009
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    Location: Noosa.Australia where god kissed the earth.

    pistnbroke I try

    Being stupid but having posted a question about polyethelene roto moulded boats ..PE am I right in thinking that this craking/UV problem is restricted to PP or is it also a problem with PE ...the makers say not.
     
    pistnbroke, Aug 10, 2010
    #18
  4. Steve W
    Joined: Jul 2004
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    Location: Duluth, Minnesota

    Steve W Senior Member

    Is it really polypropylene or is it polyethylene?
    Steve.
     
    Steve W, Aug 18, 2010
    #19

  6. Lew Morris
    Joined: Jun 2001
    Posts: 124
    Likes: 4, Points: 18, Legacy Rep: 92
    Location: Pismo Beach, Ca

    Lew Morris Industrial Designer

    Both PE and PP degrade under UV exposure.

    TAP Plastic is offering an adhesive, which they say, is suitable for bonding polypropylene.

    http://www.tapplastics.com/shop/product.php?pid=435&

    I have no personal experience using it, nor am I affiliated with TAP.
     
    Lew Morris, Aug 18, 2010
    #20
    4 people like this.
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