Development and application of non-stick PTFE material
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. In addition, such as the application of PTFE material in the roller or set in other parts, used as a guide wheel, PTFE rollers, can let the film, paper, textiles, etc. quickly through; can also be made into thin sheets such as chemical fiber molding sheet, textile lubrication block installed in the loom to prevent a variety of silk thread adhesion and made of PTFE shaped parts for mechanical equipment, to prevent glue and other bonding difficult to remove; and the use of PTFE coating and These applications make use of the small coefficient of friction and non-stick properties of PTFE material, which can reduce the tension to a minimum when the product is passed, and the attached dirt is easy to clean.
Compared with other polymers, PTFE has its unique advantages, but there are also some defects, such as poor mechanical processing properties, large coefficient of linear expansion, poor creep resistance, easy cold flow, poor wear resistance, molding and secondary processing difficulties and other deficiencies, so that its application is limited. At present, domestic and foreign research on PTFE focuses on finding appropriate methods to modify it, to improve its performance to a certain extent and expand its application. To strengthen the application of PTFE research and development, we need to focus on the modification technology research and development of new high-performance PTFE composite materials. PTFE manufacturers are also constantly improving and applying.
PTFE wear-resistant composites are made of PTFE resin as matrix, with good wear resistance by adding organic or inorganic wear-reducing components and anti-wear enhancing components. The wear-resistant composites with polymer matrix have a series of excellent characteristics such as self-lubrication, wear resistance, corrosion resistance, vibration absorption, noise reduction, low relative density, strength enhancement and easy processing, etc., so they are being used more and more widely as alternatives or substitutes for other materials. We also note that the usual use of inorganic materials have good performance, the price is also low, can increase the hardness of the material, wear resistance, dimensional stability, etc., but some inorganic materials will also be damaged when friction to the couple; and organic filling materials such as polyphenylene resin, polyimide, wear resistance, creep resistance, etc., is very good, because it is a soft material, will not damage the couple, but the price is expensive, so it should be based on Therefore, the filler products should be selected according to the use environment and requirements of the material, and the reasonable cost to bear. Polytetrafluoroethylene has the highest temperature range of plastic use space, the lowest surface energy, non-stick, corrosion resistance, insulation, non-aging and a unique position in the field of friction lubrication wear, many scholars at home and abroad on the modification of polytetrafluoroethylene technology research and discussion, I believe that in the future polytetrafluoroethylene materials will be better in quality.
1. FEP can also be made into heat shrinkable tubes, which can be used for coating transfer rollers in printing presses. 2.High surface quality can prevent print adhesion, contamination and discoloration. 3. In the medical industry, FEP tubes are mainly used as catheters or in the field of endoscopy. 4. It also prevents contamination of the delivered liquid during the injection process. 5. Therefore, the biocompatibility of FEP for medical use is also excellent. 6. FEP can be sterilized by all conventional methods.
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.
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.
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.
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.
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.