PTFE products

What is TFM?

TFM PTFE

TFM™PTFE is a branched chain polymer, with the following formula:
-[(CF2)4-CF(-O-CF2-CF2-CF3)-(CF2)5]n-

The perfluorated side group is identical to that of PFA, but is present in distinctly fewer numbers. The molecular weight is only approx. 1/5 that of PTFE, while PFA has only 1/100 of the molecular weight of PTFE. It therefore fills in the "properties gap" between PTFE and PFA without having to be processed in an injection molding procedure, as is the case with PFA.

Properties
  • TFM™PTFE is temperature resistant between -200° and +250°C under conditions of continuous use.
  • TFM™PTFE is completely resistant to chemicals and can therefore be employed almost universally.
  • The rate at which gases permeate TFM™PTFE is distinctly lower than that through conventional PTFE and only a bit higher than that through PFA.
  • Compared with PTFE, TFM™PTFE has distinctly improved surface characteristics.
  • As a result of a "shift in the direction of a thermoplastic", TFM™PTFE can be bonded using a special process.
  • TFM™PTFE exhibits better cold-flow properties, pore content and stretch-void index.

TFM™PTFE can be mixed with organic materials such as fiberglass, graphite, or carbon (compounds). This can significantly alter the properties, particularly with regard to pressure resistance, thermal expansion, electrical values and abrasion.molecular weight, crystalline structure and pore content of the molded parts and, therefore, on their quality.

Processing

When processing TFM™PTFE, the following process steps are performed:

  • compression
  • sintering
  • cooling

Processing exerts a major influence on the molecular weight, crystalline structure and pore content of the molded parts and, therefore, on their quality.

Your contact person

Dr. Michael Henes
Head of Development

T  +49.7121.894-256
F  +49.7121.894-300
michael.henes@berghof.com