PTFE hose characteristics

阅读更多

Characteristics and application of Teflon casing

The advantages of Teflon sleeves are also very clear when they are used, such as physical and mechanical properties. Teflon sleeves have relatively high density, low water absorption, and no elasticity and toughness; this is also a relatively prominent aspect. Moreover, it also has a very small coefficient of friction and shows good lubricity, and it is naturally applied in different places under such circumstances.

The static friction coefficient of Teflon sleeve is smaller than the dynamic friction coefficient, and the friction coefficient is almost constant from ultra-low temperature to melting point. In the future, when you use it, you must first understand these. This way you won’t be fooled when choosing. Of course, its hardness is low and it is easy to be worn by other materials, which is what you should pay attention to. Therefore, if a polytetrafluoroethylene film is formed on the abrasive surface, the wear loss can be reduced to a certain extent.

Teflon sleeve is a non-polar material with excellent dielectric properties. What you see now are also its advantages. And when the crystallinity of the Teflon sleeve is between 50% and 80%, the dielectric strength has almost nothing to do with the crystallinity, so that its dielectric properties are not affected by frequency and temperature, and are not affected by humidity. and corrosive gases; and the volume resistivity and surface resistivity of Teflon casing are the lowest among all engineering plastics. Its thermal stability is very prominent among engineering plastics.

PTFE tube working principle, characteristics, application scope

PTFE tube, scientific name PTFE tube (referred to as F4 tube, PTFE tube) is a high-quality plunger extruded tube, using special processing technology to make the steel tube and plastic tube tightly combined, and can withstand a positive pressure of 1.6Mpa , Negative pressure: 77Kpa; can be used normally in -60 ℃ ~ + 260 ℃, with reliable and excellent corrosion resistance. It can transport highly corrosive gas and liquid at high temperature, which cannot be replaced by other pipelines.

Wire insulation sheath, corrosive fluid medium pipeline, various electrical insulation parts used under high frequency, etc. Widely used in machinery, chemical industry, aviation, electrical and electronics, national defense industry, cutting-edge technology, medical and health care and electrical insulation and other fields.

PTFE has excellent chemical stability, can withstand all strong acids, strong alkalis, strong oxidants, and does not interact with various organic solvents. PTFE has a wide temperature range and can be used for a long time at -180°C~250°C under normal pressure. After being treated at a high temperature of 250°C for 1000 hours, its mechanical properties have little change. PTFE has a very low friction coefficient and is a good anti-friction and self-lubricating material. Its static friction coefficient is smaller than the dynamic friction coefficient, so it has the advantages of small starting resistance and smooth operation when used to make bearings. Because PTFE is non-polar, heat-resistant and non-absorbent, it is also an excellent electrical insulating material. It also has excellent aging resistance, non-stickiness and non-combustibility. The bars, pipes, films, bearings, gaskets, valves and other special-shaped materials and parts are widely used in machinery, chemical industry, aviation, electrical and electronics, national defense industry, cutting-edge technology, medical and health care and electrical insulation and other fields.