PPA-CF vs PA6-CF?

Does anyone have experience printing PPA-CF and PA6-CF? I had read that “PPA-CF is 48% stronger” than PA6 if you get good layer adhesion, but I’m seeing conflicting info regarding impact resistance. Anyone have input who’s printed and used both?

  • KopsisEnglish
    1·
    1 month ago

    PPA is the abreviation for polyphthalamide - not a marketing name. Though there are variations (just like polyamide), the 6 carbon (same basic structure as PA6) is the only one I’ve seen used in consumer filament.

    • ConfuzledEnglish
      1·
      1 month ago

      I’m not saying it is a marketing name, just that Ppa by itself doesn’t give a complete picture.

      Either way, I’m trying to talk edgeof3d and Dr. Gaspar into doing a Ppa shootout

      • KopsisEnglish
        1·
        1 month ago

        That’s true for every filament. None of the PA6 is just PA6. Same for PLA. PETG can vary wildly in how much glycol gets replaced. The list goes on. But in all those cases, the name accurately identifies the base chemistry. That is in stark contrast to the name PAHT which doesn’t even give you that much.