Friction Control

2 Replies

Bob’s Question was: I am trying to reduce the coefficient of friction on the surface of a molded silicone part. Does anyone know what my options are to achieve this? Is there a specific material or coating that I can use? Or does it mainly have to do with surface finish?

Our experience is that surface finish is the most controllable way to change the coefficient of friction - very smooth or highly polished surfaces increase the coefficient of friction while textured surfaces decrease the coefficient of friction for liquid silicone parts. Texturing is probably your best option. Coatings may get you into bonding or bio compatibility issues.

  • http://www.albright1.com Bob

    Thank you for your response. Have you ever tried this material from NuSil? http://www.nusil.com/mediarelations/2010/press-release67.aspx

  • Sean Dickson

    If this is a non-medical, FDA, NSF, or USDA application then you have many options available from secondary PTFE, Graphite, Nitride, MICA, etc. type coatings available. You can also using different cure systems to provide tighter cross-link density on the surface. Or, you can evaluate self-lubricating systems. Beyond that, many silicone suppliers can provide systems that are loaded with various materials to reduce the COF or increase it.