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Application of PTFE in Manufacturing

Views: 114     Author: Site Editor     Publish Time: 2021-06-01      Origin: Site

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Semiconductors play a very important role in our daily life. Many electronic devices used in our daily life rely on semiconductors to ensure the normal operation of the devices. In the process of manufacturing semiconductors, people will take advantage of the chemical inertness of PTFE, because Waterproof Ptfe Thread Seal Tape has many high-quality characteristics, allowing people to use this material in many electronic devices.



1. characteristics:


1.1 Self-lubrication


The excellent mechanical property of Ptfe Thread Sealing Tape is its low friction coefficient, which is between 0. 01 and 0. 10. It is the smallest friction coefficient (0.04) in plastics and even all engineering materials, and its friction coefficient is only 1/5 of that of polyethylene, which is also an important feature of perfluorocarbon surface. The friction coefficient of ptfe thread tape increases with the sliding rate, and tends to be stable when the linear velocity reaches above 0. 5-1. 0m/s; Moreover, the static friction factor is smaller than the dynamic friction factor, so this characteristic can reduce the starting resistance and make it very stable from starting to running.



1.2 Electrical insulation


Because the fluorine atoms in the molecular chain of PTFE are symmetrical and evenly distributed, there is no inherent dipole moment, and the change is very small within the power frequency range of 109HZ. Its insulation resistance is very high, even if 12mm width ptfe thread seal tape is immersed in water for a long time, it does not change significantly, and its breakdown field strength is very high. The breakdown field strength of thin PTFE film can reach 200 KV/mm. With the increase of thickness, the breakdown field strength gradually decreases.


1.3 Corrosion resistance


In the petroleum, petrochemical and natural gas industry, most of the media are liquids and gases with different corrosivity, so it is required that the gaskets used have extremely high chemical corrosion resistance. When best ptfe tape is boiled in concentrated sulfuric acid, nitric acid, hydrochloric acid and even aqua regia, its weight and properties have no change, and its almost insoluble in most solvents, which fully meet the requirements of corrosion resistance.


1.4 Sealing property


The raw materials of chemical products are expensive, and any leakage will bring great losses to users. Chemical products are flammable and explosive, which may cause incalculable serious losses such as explosion, fire, casualties and so on. Therefore, there is a very high requirement for the sealability of sealing products, and 12mm ptfe thread seal tape has a high density of 2.14-2.20g/cm, hardly absorbs water, and its equilibrium water absorption rate is less than 0.01%, which makes it the first choice material for sealing products.


1.5 Resistance to high and low temperatures


Many industries have a strong demand for the high and low temperature resistance of pipe sealant ptfe tape. We take the petrochemical industry as an example. Because there are many kinds of gases and liquids, such as aromatic hydrocarbon, antirust agent, acid gas, drilling fluid, seawater, carbon dioxide, hydrogen sulfide, etc., and these media are often mixed together and have the characteristics of high temperature and high pressure, PTFE has replaced the hydrogen atom in polyethylene because of fluorine atoms, so the molecular chain has changed from planar structure to spiral structure, and fluorine atoms of the 19mm professional ptfe tape are in the molecular carbon chain skeleton.




2. Where can PTFE be used?


2.1 Machinery, electronics, chemical industry, etc., used 12mm white ptfe tape for spraying, dipping, etc.


2.2 Make high-frequency resistant wire and cable sheathing, corrosion-resistant chemical utensils, high insulation electrical parts, cold-resistant oil pipelines, artificial organs, etc.


2.3 As additives for plastics, coatings, inks, lubricants, rubber, etc.


2.4 Press forming to make thin-walled tubes, thin bars, special-shaped bars, etc.


2.5 25mm ptfe tape is used for ultra-pure chemical analysis and storage of various acids, alkalis and organic solvents in medicine, atomic energy, semiconductor and other industries.


2.6 Making tube sheet rods, bearings, films, gaskets, valves and pipe fittings, chemical pipelines, equipment container linings, etc., which are used in chemical aviation, electrical appliances, machinery and other fields.