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Toughen heat resistance adhesive.

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Toughen heat resistance adhesive.

Home › Forums › General Questions › Toughen heat resistance adhesive.

Viewing 5 posts - 1 through 5 (of 5 total)
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  • 12 August 2011 at 22:51 #73273
    Windy
    Participant
      @windy30762
      I run a flash steam hydroplane and the hull is made of mainly 1/32 marine ply for lightness.
      It is glued with 2 part epoxy and at times when things get a bit out of hand the heat softens the epoxy and causes joint failure sometimes with disasterous results.
      There are toughen epoxy adhesives that I used to use in the car body repair trade but the one that was used would still soften with heat.
      A friend once gave me a cataloque with some industrial epoxy that would probably do but they are no longer trading.
      The sort of heat causes the plywood etc to char.
      This nomally only happens if excess fuel is pumped to the burners if there is drive or prop failure.
      I require an adhesive to bond wood and metal, to be flexable and withstand heat that chars wood.
      Any suggestion of suitable glues that you can buy in a small quantity would be welcome
       
      Windy
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      12 August 2011 at 22:51 #21914
      Windy
      Participant
        @windy30762
        13 August 2011 at 02:22 #73278
        Bill Pudney
        Participant
          @billpudney37759
          “J B Weld” might do the trick. Its intended for metal to metal, and is rated up to something like 300 degrees. I’ve used it for sticking a bit of al. alloy to the balsa leading edge of a model aeroplane, where the balsa can get charred by the hot exhaust without the al. alloy. I’ve also used J B Weld to glue a diesel engine piston together (!!), it will be flown for the umpteenth time later today.
          best of luck!!
          cheers
          Bill Pudney
          13 August 2011 at 06:25 #73280
          Windy
          Participant
            @windy30762
            Thanks Bill for the suggestion as a reasonably easy product to buy it might do the job.
             
            At the moment I have some JB weld as a seal on a new silencer I have just made and will see how that turns out after a few runs next month.
             
            I have not tried it on wood yet but will do a few test pieces and see what happens when it gets hot.
             
            Windy

            Edited By Windy on 13/08/2011 06:47:31

            13 August 2011 at 08:07 #73284
            michael howarth 1
            Participant
              @michaelhowarth1
              Windy,
               
              Just to be on the safe side, I thought I might mention that the J B Weld web site specifies heat resistance up to 500 degrees Fahrenheit………which as you will know is 260 degrees Centigrade.
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