PTFE, PFA, FEP, PVDF Fluoroplastic products industry experts
A brief introduction to the performance, application and superiority of PTFE tube
Classification:
Industry dynamics
Author:
PFA tube little sister
Source:
Dankai
Release time:
2023-01-07
Visits:
PTFE pipe is the use of high-quality plunger extrusion pipe, the use of special processing technology, so that the steel pipe and plastic pipe closely combined, can withstand positive pressure 1.6Mpa, negative pressure:
77Kpa; can be used normally in -60~260 degrees Celsius, with reliable and excellent corrosion resistance. Transporting strong corrosive gases and liquids at high temperatures, which other pipelines cannot
instead.
Dankai polytetrafluoroethylene (PTFE) has excellent chemical stability, can withstand all strong acids, strong bases, strong oxidants, and does not act with various organic solvents. PTFE use temperature
It can be applied to -180 ℃ ~ 250 ℃ for a long time under normal pressure. After being treated at 250 ℃ for 1000h, its mechanical properties change very little. PTFE has a very low friction
The friction factor is a good antifriction, self-lubricating material, its static friction coefficient is less than the dynamic friction coefficient, so it is used to make bearings with small starting resistance and smooth operation.
Point. Because PTFE is non-polar, heat-resistant and non-absorbent, it is also an excellent electrical insulating material. Also has excellent aging resistance, non-sticky and non-flammable.
Figure 1: PTFE tube Source: Dankai
The bars, pipes, films, bearings, gaskets, valves and other special-shaped materials and parts made of Dankai PTFE are widely used in machinery, chemical industry, aviation, electrical and electrical
defense industry, cutting-edge science and technology, medical and health and electrical insulation and other fields.
PTFE, known as/commonly known as "plastic king", Chinese trade name "Teflon", "Teflon", "Teflon", "Teflon", "Teflon", "Teflon" and so on.
It 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 resistance materials in the world today, except for molten gold
It belongs to sodium and liquid fluorine, can withstand all other chemicals, and cannot change when boiled in aqua regia. It is widely used in various needs of acid-base resistance and organic solvents), airtightness, high lubrication
Adhesion, electrical insulation and good anti-aging resistance, excellent temperature resistance (can work for a long time at a temperature of 250 ℃ to -180 ℃).
1. PTFE tube performance profile:
Performance: medium working -180 ℃ ~-250 ℃;
Medium working pressure: positive pressure:-2.5MPa, negative pressure resistance at room temperature 70KPa;
Corrosion resistance: PTFE tube, in addition to molten metal lithium, potassium, sodium, chlorine trifluoride, high temperature of three fluoride oxygen, high flow rate of liquid fluorine, it can resist almost all chemical medium
It can work at 230 ℃-250 ℃ for a long time, including the corrosion of concentrated nitric acid and aqua regia. Steel polyvinylidene fluoride or other vinylidene fluoride composite pipe, halogen, halogen
Hydrocarbons, strong oxidants, boiling acids, alkalis, and a variety of organic solvents have good corrosion resistance, but they are not resistant to fuming sulfuric acid, concentrated hot sulfuric acid and nitric acid, ketones, esters, amines and
High temperature sulfonating agent corrosion.
2. the superiority of PTFE tube:
①. High chemical stability, can withstand all strong acids, including aqua regia, hydrofluoric acid, concentrated hydrochloric acid, nitric acid, fuming sulfuric acid, organic acids, strong alkali, strong oxidants, reducing agents and various
The role of organic solvents. Very suitable for high purity chemical feeding use.
②. Wide use temperature range, can be used in the range of -73 ℃- 260 ℃.
③. Outstanding non-adhesive, anti-adhesive excellent, the inner wall of the tube is not easy to adhere to colloids and chemicals.
④. High flexibility, bending resistance.
⑤. Excellent aging resistance and radiation resistance can be used outdoors for a long time,
⑥. Excellent thermal stability, with a very valuable incombustibility, its limit oxygen index above 95, in the flame can only melt, do not generate droplets, and ultimately can only be carbonized.
⑦. Excellent electrical insulation properties, PTFE is a highly non-polar material with good dielectric properties, great resistance, and a dielectric constant of about 2.0, which is the smallest among all electrical insulation materials,
And changes in temperature and frequency have little effect on them.
⑧. Part of the tube transparency is high, easy to observe the internal fluid condition.
3. PTFE Pipe Application
Suitable for highly corrosive gases and liquids at high temperatures, other types of steel-plastic composite pipes and metal pipes are not suitable for conveying media, steel PTFE composite pipes. All pipes are applicable, steel polyfluorine
Class composite pipe is suitable for conveying corrosive medium with working temperature of -40 ℃ ~ 150 ℃.
dankai specializing in the production of tetrafluoro tube tetrafluoro tube, widely used in electric power, chemical, petrochemical products, environmental protection and other industries.
This article is originally created by Teflon's little sister. Welcome to pay attention and take you to grow knowledge together!
Key words:
PTFE, use, performance, with, electrical insulation, corrosion resistance, high temperature resistance, aging resistance, chemical stability
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