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PTFE and Expanded PTFE

Views: 101     Author: Site Editor     Publish Time: 2021-06-13      Origin: Site

We all know that PTFE is the grandfather of fluoroplastics, but some people may not know what Expanded PTFE tape is. Expanded PTFE is very similar to PTFE in performance and has many applications in life.



Properties of PTFE


High temperature resistance-the working temperature of PTFE cable tape reaches 250℃.


Low temperature resistance-good mechanical toughness; Even if the temperature drops to -196℃, the elongation of 5% can be maintained.



Weather resistance-PTFE wraping tape has the best aging life in plastics.


High lubrication-the one with the lowest friction coefficient among solid materials.


Non-adhesion —— PTFE cabling tape is the minimum surface tension in solid materials and does not adhere to any substance.



Applications of PTFE


With the development of science and technology, the anti-corrosion equipment made of traditional anti-corrosion nonmetallic materials is becoming more and more perfect, and new anti-corrosion nonmetallic materials are constantly emerging. In the tide of developing new anti-corrosion products with new technologies and materials, PTFE anti-corrosion products stand out and develop rapidly. PTFE insulation film has high chemical stability. It can resist almost all commonly used chemical substances with strong corrosion and hydrogen oxidation, and also has the characteristics of high temperature resistance, so teflon film tape is an ideal anti-corrosion material.


Teflon anti-corrosion products can replace a large number of alloy products, increase the working capacity of equipment, reduce downtime and maintenance, and are a kind of anti-corrosion products with great development potential.


Ptfe sealing film roll is widely used as high and low temperature resistant, corrosion resistant material, insulating material and anti-sticking coating in industries such as atomic energy, national defense, aerospace, electronics, electricity, chemical industry, machinery, instruments, meters, construction, textile, metal surface treatment, metallurgy and smelting, etc., making it an irreplaceable product.


Teflon has outstanding comprehensive properties, such as high temperature resistance, corrosion resistance, non-adhesion, self-lubrication, excellent dielectric properties and low friction coefficient. Used as engineering plastics, it can be made into PTFE pipes, rods, belts, plates, PTFE wraping films, etc. The mechanical properties of PTFE can be greatly improved by adding any filler that can withstand the sintering temperature of PTFE, while maintaining other excellent properties of PTFE.




Properties of ePTFE


Expanded PTFE material is developed by special process treatment. It has excellent flexibility, some compliance and forming ability, and also has high tensile strength, creep resistance, high and low temperature resistance, corrosion resistance, cold flow resistance and aging resistance. ePTFE cable wrapping tape can be stored for a long time without deterioration, innocuity and pollution, and is composed of numerous homogeneous, fine, soft and strong multidirectional fibers, with unique high-density fiber structure. After being compressed, the fibers will entangle with each other and become more compact and uniform, airtight, impermeable, with good leak-proof performance, and can also maintain a tight state under severe corrosive environment and high temperature.



The applications of ePTFE


The material is suitable for low-pressure sealing purposes, and can be used in highly sealed and corrosive environments such as biopharmaceuticals, food, chemical industry, oil refining, military affairs, ships, aerospace and machinery. It can also be used in heat exchanger, FRP, water system of liquid and gas system, ventilation fan frame and other construction sites. Expanded ptfe sealing tape has high durability, weatherability and safety, and is used for industrial leak-proof sealing.


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