The English abbreviation of polytetrafluoroethylene gasket is PTFE (commonly known as the King of Plastics), and the brand name is Teflon?. Products made of this material are acid and alkali resistant, high temperature resistant, and resistant to various organic solvents. It is widely used in the chemical and pharmaceutical industry and can be called the originator of the gasket industry. Today, the editor will introduce to you what PTFE gaskets are and what are the advantages of PTFE gaskets?
What is PTFE gasket
Polytetrafluoroethylene (English abbreviation: Teflon or PTFE, F4) is called the king of plastics because of its wide application, and its Chinese transliteration is called For Teflon, Teflon, Teflon, Teflon, Teflon and so on. Polytetrafluoroethylene is a polymer compound formed by the polymerization of tetrafluoroethylene. It has excellent chemical stability and corrosion resistance (it is one of the best corrosion-resistant materials in the world today, except for molten metal sodium and liquid fluorine. , can withstand all other chemicals, and does not change when boiled in aqua regia. It is widely used in various working conditions that require resistance to acids, alkalis and organic solvents), sealing, high lubrication and non-stickiness, electrical insulation and good aging resistance. , Large temperature resistance span (can work for a long time at temperatures from 250°C to -180°C). PTFE itself is not toxic to humans, but one of the raw materials used in the production process, perfluorooctanoate (PFOA), is considered to be potentially carcinogenic. Its birth has solved many problems in the world's chemical industry, petroleum, pharmaceutical and other fields. It has been widely used as sealing material and filling material.
Advantages of polytetrafluoroethylene gasket
High temperature resistance and working temperature up to 250℃.
It has low temperature resistance and good mechanical toughness; even if the temperature drops to -196°C, it can maintain an elongation of 5.
Corrosion resistance is inert to most chemicals and solvents, and can withstand strong acids and alkalis, water and various organic solvents.
Weather resistant and has the best aging life among plastics.
High lubrication is the one with the lowest friction coefficient among solid materials.
Non-adhesion is the smallest surface tension in a solid material that does not adhere to anything.
It is non-toxic and physiologically inert, and can be used as artificial blood vessels and organs for long-term implantation in the body without adverse reactions.
The above content is the introduction brought by the editor about what PTFE gaskets are and the advantages of PTFE gaskets. I hope it can help everyone.