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PTFE, FEP and PFA tubes in heat exchanger applications

PTFE, FEP and PFA tubes in heat exchanger applications

2022-11

Heat exchangers are used in a wide range of applications in industries such as air conditioning, power plants, oil refineries and internal combustion engines. You may not know that you are familiar with heat exchangers. Take for example the radiator in your car. Heat exchangers keep your equipment cool and prevent overheating and malfunction. You may have seen someone open the hood of their car on the side of the road and smoke comes out as a result of a radiator failure.

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Development and application of non-stick PTFE material

Development and application of non-stick PTFE material

2022-11

PTFE material has the smallest surface tension and inertness among solid materials and does not adhere to any substance. PTFE material has the lowest coefficient of friction, excellent self-lubrication, and also has excellent resistance to high and low temperatures, which makes it very widely used in applications such as the manufacture of non-stick pan anti-stick. PTFE is also used in rollers and other parts, as a guide, and as a material for the production of non-stick pans.

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PTFE fiber classification

PTFE fiber classification

2022-11

1. PTFE white curly staple fiber is generally manufactured using the membrane splitting method, fiber strength is greater than the brown fiber produced by the emulsion spouting method, fiber can also be used to add color technology as needed to make a variety of colored fibers. It is suitable for high temperature environment, excellent chemical stability, low shrinkage rate, anti-aging and other characteristics.

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Polytetrafluoroethylene ---- raw material performance

Polytetrafluoroethylene ---- raw material performance

2022-11

Polytetrafluoroethylene (F4, PTFE) has a series of excellent performance: high temperature resistance - long-term use temperature 200 ~ 260 degrees, low temperature resistance - still soft at -100 degrees; corrosion resistance - can resist aqua regia and all organic solvents; weather resistance - The best aging life in plastic; high lubrication - with the smallest coefficient of friction in plastic (0.04); non-stick - with the smallest surface tension in solid materials without adhesion to any material; non-toxic - with physiological inertia; excellent electrical properties, is the ideal C-class insulation material.

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Polytetrafluoroethylene ---- mechanical properties

Polytetrafluoroethylene ---- mechanical properties

2022-11

The coefficient of friction of PTFE is extremely small, only 1/5 of that of polyethylene, which is an important characteristic of perfluorocarbon surfaces. Due to the extremely low intermolecular forces between fluorine-carbon chains, PTFE has non-stick properties.

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Polytetrafluoroethylene ---- performance chapter

Polytetrafluoroethylene ---- performance chapter

2022-11

PTFE has very high chemical resistance, for example, in concentrated sulfuric acid, nitric acid, hydrochloric acid, even boiling in aqua regia, its weight and performance are not changed, and almost insoluble in most solvents, only slightly soluble in full alkane (about 0.1g/100g) above 300 ℃. Polytetrafluoroethylene does not absorb moisture, non-combustible, extremely stable to oxygen and ultraviolet light, so it has excellent weather resistance.

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