| Filled PTFE | |
 PTFE, because of the properties
previously described, is used in a very large number of
fields. Some of its properties can be improved and/or
modified by adding suitable fillers, allowing the use of
PTFE in fields otherwise precluded to this polymer. The
treated PTFE is generally known as filled PTFE. The
fillers most commonly used are: glass fiber, carbon,
bronze or graphite, in the form of powder intimately
mixed with the PTFE; other fillers are: molybdenum
disulfide, metal powders, ceramics, metal oxides and
mixtures of two or more additives.The addition of fillers to the PTFE improves or modifies its properties depending upon the nature and quantity of filler:
Filled PTFE is often not as strong and resilient as virgin PTFE. The filler limits the resistance to chemical agents and the electrical properties. |
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