As Pat mentions, Shamban has products that include filled PTFE that will perform well though pricey. Shamban products are now part of Trelleborg at http://tss.trelleborg.com/com/www/en/products/Products.jsp . They can be compression molded to your specs. Molding will depend on the amount of...
Biff,
Thank you for posting this great tribute to my brother. He passed doing what he loved while modifying his Harley. Frank never missed the opportunity to take something apart, figure out how it worked, and make it better.
He will be missed by many.
Plastx...
Pat's right about needing more info to narrow the field. Bronze filled PTFE would be a good start though the heavy load may cold flow even the filled PTFE's. Best bet is to contact a distributor who has a range of materials and can supply small quantities of materials in rod/tube form and can...
Consider polycarbonate which by itself isn't scratch resistant but like forward lighting in automotive you can apply silicone topcoat whichs greatly improves this property.
Acrylic is another option, not as durable as polycarb, but more cost effective.
You can check out Matweb which lists the various Bakelite grades at http://www.matweb.com/ or you can contact Sumitomo directly if Matweb does not provide at http://www.sumibe.co.jp/english/index.html
Regards,
Mike
Try GE Polymershapes at http://www.gepolymershapes.com/shapes/ or 1-866-437-7427. GE makes VALOX which is PBT and Polymershapes sells sheet and film. I've used VALOX for keyboard keycaps where we subliminated the printing.
Mike
Check out Eaton at http://aerospace.eaton.com/products/fluid_conveyance/hoses/index.html
They reference Teflon on this page which as previously mentioned can be several different fluoropolymers. I believe in this case it is a PTFE liner.
The amount of regrind is dependant on which plastic, how it was processed, and what the final part will be used for in the end. There are some guidelines such as UL which will dictate a % that can be used and still qualify for UL94 flammability. Check with UL by material for specific %. In...
Most NORYL grades will crack or craze when exposed to typical machine shop solvent/fluids. If you add stress to the equation then it will only add to the problem.
NORYL is a blend of PPE and polystyrene. The polystyrene component is what the solvents attack. Some NORYL grades have glass fibers...
I'm familiar with porous PTFE being used as spargers so I believe you are looking for controlled porosity. I haven't used UHMWPE as a sparger but with PTFE there are several methods to obtain the correct porosity by mixing different materials which have different MW to obtain a targeted porous...
That's true. It depends on what is causing the part to warp. Bars and rods usually have relatively low stress as compared to injection molded parts. The CPVC would be fairly straight forward to test annealing. Place in an oven within 10F of the glass transition temperature. Time is dependant on...
I was thinking air hockey pucks but given the wall dimension of 1/3 inch thick you may want to take metron's advice about a foam additive. The foam or blowing agent will reduce the weight and improve the material wall appearance which may "sink" when it cools.
Mike
LEXAN costs more, in some cases 2x as much, as HIPS. Also take into account that polycarbonate's density is about 20% higher than HIPS. Something like this would be injection molded.
You would have to make enough parts to cover the tooling/mold costs which for a puck the tooling would not be...
I agree that testing is critical to make sure that an alternate material doesn't ruin your product but I've been burned by only having one source of material. Do the math up front if cost reduction is the main purpose of the change to make sure the switch will yield greater returns long term.
Mike
IDES provides good plastics info. For VESPEL like materials go to:
http://www.ides.com/generics/TS/TS_products.htm and look for "PI TS" and you can get some alternatives. IDES has some free info and other stuff is a $ service.
Mike
There are several "plasticizer-free" PVC foam tapes out there but mainly for health reasons and not for migrating to the substrate. PVC is cost effective and usually the plasticizer is not an issue but consider if you are going to expose to elevated temps or conditions that will facilitate...
You could check with DuPont. They are better than most at providing deep data. Most Young's Modulus values are going to be at Room Temp when you find them.
Mike
Hostaflon was purchased by Dyneon back in 1998. Check the following link for more info:
http://multimedia.mmm.com/mws/mediawebserver.dyn?6666660Zjcf6lVs6EVs666OBoCOrrrrQ-
They still list a TF 1750 grade under the Dyneon label.
Mike
