Glossary

PTFE coating

Polytetrafluoroethylene (abbreviated P, sometimes polytetrafluoroethylene or ethylene) is a fully fluorinated polymer. Colloquially PTFE coatings are often with the trade name Teflon ™ designated by the company DuPont. Other commonly used trademarks of other manufacturers are Dyneon PTFE (formerly Hostaflon) and Gore-Tex for PTFE membranes. The PTFE coating is applied after a mechanical and / or chemical pretreatment and then subjected to a heat treatment (sintering). A PTFE coating is used as Non-stick coating used in many technical applications. PTFE is very inert. Even aggressive acids can not attack this coating. The reason lies in the particularly strong bond between the carbon and the fluorine atoms. Many substances do not break the bonds and react with PTFE. Due to its chemical inertness, PTFE is used as a coating where aggressive chemicals are present. A PTFE coating has a very low coefficient of friction. PTFE glides on PTFE as well as wet ice on wet ice. In addition, the static friction of this coating is the same as the sliding friction. A PTFE coating is difficult to wet. Due to its low friction PTFE is used as a coating in the range dry lubrication and as a coating for Bearings and seals used. The varied and relatively simple ways of compounding enable special mixtures for diverse applications.

Application examples for PTFE coatings

Rhenotherm Kunststoffbeschichtungs GmbH carries out contract coating with PTFE (PTFE coating) and is certified as a contract coater according to DIN EN ISO 9001: 2015.

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