Need Help Selecting an Appropriate Material
Need Help Selecting an Appropriate Material
(OP)
Hi guys, I am designing a couple of injection molded plastics parts that have to slide across each other and I'm concerned about the coefficient of friction between them. The two parts will be molded from the same material although I have not decided on a material yet. Does anyone know where I might be able to find information about the coefficient of friction between various injection molded plastics?
Thank you,
Thank you,





RE: Need Help Selecting an Appropriate Material
Rick Fischer
Principal Engineer
Argonne National Laboratory
RE: Need Help Selecting an Appropriate Material
RE: Need Help Selecting an Appropriate Material
As a general statement and taking a step back on plastic materials available for Injection Molding Technique I would say you'd probably find the POM or also called Polyacetal to be the best material to reduce friction. PA may also be good, but it should be compounded with additives reducing the friction. Some have small amount of PTFE, others Silicone oils or MoS2 inside.
Beside materials you'd consider part design of course: what is the surface of contact? Can you reduce it (in case you want the lowest friction possible)... And many other things to think about.
Thbaud Deleger
Empowering Polymers S.A.S.
Technical Writer & Polymer Consultant