No wax no PVA full cure

Discussion in 'Materials' started by Buffer, Dec 14, 2019.

  1. Buffer

    Buffer Previous Member

    Hello everyone, first time here. I have a question. What allows some gelcoats and polyester resins to cure fully to non tacky surface without PVA or wax additive. An example would be Duratec. What is the additive to make this possible. Thanks
     
  2. ondarvr
    Joined: Dec 2005
    Posts: 2,118
    Likes: 192, Points: 63, Legacy Rep: 506
    Location: Monroe WA

    ondarvr Senior Member

    It’s not an additive, it’s the base resin used to make the products. The chemistry isn’t air inhibited like the normal polyester base.
     
  3. gonzo
    Joined: Aug 2002
    Posts: 13,954
    Likes: 486, Points: 93, Legacy Rep: 2031
    Location: Milwaukee, WI

    gonzo Senior Member

  4. Buffer

    Buffer Previous Member

    No. I’m new to resins. I just thought there was an additive out there for any gel coat to do this except wax. Sorry won’t ask any more questions.
     
  5. gonzo
    Joined: Aug 2002
    Posts: 13,954
    Likes: 486, Points: 93, Legacy Rep: 2031
    Location: Milwaukee, WI

    gonzo Senior Member

    The Duratec is used on unwaxed gelcoat. It also lowers the viscosity so it can be sprayed like an enamel.
     

  6. ondarvr
    Joined: Dec 2005
    Posts: 2,118
    Likes: 192, Points: 63, Legacy Rep: 506
    Location: Monroe WA

    ondarvr Senior Member

    I may have misunderstood your question.

    Adding the Duratec clear additive to gel coat does allow it to cure tack free, you typically need a 50/50 blend to do this.

    There is a complete line of Duratec products that use the the same chemistry to achieve a tack free cure.
     
Loading...
Forum posts represent the experience, opinion, and view of individual users. Boat Design Net does not necessarily endorse nor share the view of each individual post.
When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. Your circumstances or experience may be different.