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  • Users: tffy
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  1. tffy

    Invisible weld?

    Hi guys! Have a project where the butt-weld (well, actually two 45 degree chamfered pieces coming together - think picture frame) used on pretty thin (85 thou thick) aluminum need to be 'invisible'. The pieces are held together and the customer is okay with a small gap remaining between them -...
  2. tffy

    Standard carbon steel barrier coating

    Hello! I am researching a product improvement application that will require adhering a (rubber foam) item to a surface of a conventional nail clipper. In researching the adhesive/process most applicable, I wanted to find out what specifically is the standard anti-oxidant coating used in this...
  3. tffy

    Permanently attaching rubber foam to plasticized PVC

    In order to address my question located in the adhesives and sealants section of the forum, trying to attract the most knowledge available on the subject, and going off of the moderators' past suggestions as how to deal with gathering as much information as possible while 'not cross-posting' -...
  4. tffy

    Attaching foam to plasticized PVC

    Hey guys - have a question for you... a product that I am developing has an extruded length (32" long) of plasticized PVC covered by foam (not sure exactly what formulation is being used now by subcontractor) – but whatever is required/suggested can be obtained. The profile of geometry in...
  5. tffy

    Peel Adhesion measured in N/10mm

    Hello everyone! Writing this post in search of a bit of help. I'm evaluating if a specific adhesive is useful for my application, but am getting stumped by the datasheet. 3m 9469PC is what I'm planning to use to adhere a length of acrylic-modified PVC to a (possibly electroplated?) thin steel...
  6. tffy

    Are all car roof materials similar?

    Hello everyone! I am developing a product which uses magnets to attach to the roof of cars. I am aware that some cars use aluminum or fiberglass in their construction - that's easy to test for. Ignoring this, the question that I have is - is there any information to help me be sure that all...
  7. tffy

    Assembly components not visible

    Hey guys, had a question. I am running CATIA V5.18 SP4 and am running into a problem. I'm exporting an assembly from SolidWorks into CATIA as an .STP. I get CATIA to read the STP in and save as a converted document. From thereon out, I open my big assembly, which the smaller exported assembly...
  8. tffy

    Simple Creep/Slump Testing of a Cylindrical Part

    Hello, I'm trying to figure out how a part made from a viscoelastic thermoplastic material will deform with time. Is there a simple method to do this? The problem can be simplifid to a 2-d state. I can obtain relevant material values for an analytical test, or if you can suggest a way to relate...
  9. tffy

    Adhering wax to polycarbonate, CTE effects

    Hi everyone, I was hoping to get some suggestions on additives I can modify a paraffin wax (160F melting point) with in order to get it to adhere reasonably well to a polycarbonate "mold", and maybe allow the wax to not "gap" away from the "mould" wall as the CTE effect kicks in with the...
  10. tffy

    A polymer/material suggestion... similar to asphalt/bitumen?

    Hi everyone, I am trying to find a material with the following qualities... I am hoping someone could offer a suggestion. Thanks in advance! 1) Similar to Asphalt in material properties (elasticity, tackiness), or maybe more elastic and less crack-prone in a solid state. 2) Hopefully less...
  11. tffy

    Expanding Adhesives?

    Hi everyone. I'm trying to fill in a post-casting gap between two materials of differing CTEs, in a closed environment. I'm looking for some sort of a slow cure (about 4 hours at appoximately 200 degrees F) adhesive that expands upon cure. Do any such materials exist out there? Thanks a bunch...

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