PTFE Film Manufacturers Analyze Other Names of PTFE. PTFE is Teflon in English, also known as Teflon, Teflon, Teflon, Teflon, etc. It is a fluorine coating with PTFE as matrix resin. Polytetrafluoroethylene is the 1 kind of Teflon, which is a polymer compound formed by polymerization of tetrafluoroethylene. It has excellent chemical stability and corrosion resistance, and is one of the excellent corrosion resistance materials in the world today. With sealing, high lubrication non-stick, electrical insulation and good anti-aging ability, excellent temperature resistance. And polytetrafluoroethylene itself is not toxic to humans.

2. classification: Teflon is divided into PTFE, FEP, PFA, ETFE 4 types

1.PTFE (polytetrafluoroethylene) non-stick coating can be used continuously at a high temperature of 260 ℃, the maximum use temperature can reach 290-300 ℃, extremely low friction coefficient, good wear resistance and excellent chemical stability.

2.FEP (fluorinated ethylene propylene copolymer) non-stick coating melt flow to form a non-porous film during baking, with excellent chemical stability, excellent non-stick characteristics, the highest use temperature of 200 ℃.

3.PFA (perfluoroalkylate) non-stick coatings, like FEP, melt flow during baking to form a non-porous film. The advantage of PFA is that it has a higher continuous use temperature of 260 ℃, stronger rigidity and toughness, and is suitable for use in the field of anti-sticking and chemical resistance under high temperature conditions.

4.ETFE is the 1 copolymer of ethylene and tetrafluoroethylene, is the toughest fluoropolymer resin, can form a highly durable coating, has excellent chemical resistance, and can work continuously at 150 ℃.

Advantages and disadvantages of 3. polytetrafluoroethylene: 1. Advantages of high and low temperature resistance-can work for a long time at a temperature of 250 ℃ to -180 ℃ | corrosion resistance-except molten alkali metal, chlorine trifluoride, 5 chlorine fluoride and liquid fluorine, can withstand all other chemicals, boiling in aqua regia does not change, and is widely used in various occasions requiring acid and alkali resistance and organic solvents. | Weather-resistant-has the best aging life in plastics. PTFE resistance to atmospheric aging: radiation resistance and low permeability: long-term exposure to the atmosphere, the surface and performance remain unchanged. PTFE does not absorb moisture, non-flammable, oxygen, ultraviolet are extremely stable, so it has excellent weather resistance. | High lubrication-is the lowest coefficient of friction in solid materials. | No adhesion-is the smallest surface tension in a solid material and does not adhere to any substance. | non-toxic-with physiological inertia, as artificial blood vessels and organs long-term implantation in the body without adverse reactions. Excellent electrical performance, is an ideal C- class insulation material, a thick layer of newspaper can block 1500V high voltage; Smooth than ice. | incombustibility: oxygen limiting index below 90.

(1), PTFE with "cold flow". That is, the plastic deformation (creep) of material products under long-term continuous load, which brings certain restrictions to its application. For example, when PTFE is used as a gasket, the bolts are tightened tightly for a tight seal, so that when a specific compressive stress is exceeded, the gasket will produce "cold flow" (creep) and be flattened. These shortcomings can be overcome by adding appropriate fillers and improving the structure of the parts.

(2) PTFE has outstanding non-tackiness, and polytetrafluoroethylene on the other hand also limits its industrial application.

(3) The linear expansion coefficient of PTFE is 10 to 20 times that of steel, which is larger than most plastics, and its linear expansion coefficient changes very irregularly with the change of temperature.

(4). Radiation resistance: PTFE has poor radiation resistance (104 rad). After being degraded by high-energy radiation, the electrical and mechanical properties of polymers are obviously decreased. PTFE building membrane materials, such as SOLUS series products produced by TACONIC Company, have been widely used in large public facilities: roof systems of stadiums, airport halls, exhibition centers, platforms, etc.

Light weight: the weight of PTFE is only a small part of the 1 of traditional building materials

High strength: glass fiber is the highest strength in textile fabrics. It is even stronger than steel wire of the same diameter. Different from most solid building materials, soft Solus products can be stretched into various dynamic arc shapes.

Light transmission: through the inner and outer surface of the uniform light transmission, it forms a soft scattering light

Low maintenance: Only a small amount of cleaning work is required during the weaving life. Because the surface of the woven fabric is non-sticky and taut at the same time, the rain will wash the dust off the surface completely inert. The harsh environment, such as mold, acid rain, etc., will not work on the woven surface.

Weldability: Each fabric frame will be welded together to form a large roof. The strength of the weld will be greater than the fabric itself; the service life is long during its use, and the PTFE-coated glass fabric has almost no degradation. Due to the defects of rubber, glass, metal alloy and other materials in corrosion resistance, it is difficult to meet the harsh conditions of temperature, pressure and chemical medium coexistence environment, the resulting loss is quite surprising. The PTFE material with its excellent corrosion resistance, has become the main corrosion resistant materials in petroleum, chemical, textile and other industries.

The specific applications of PTFE include: conveying pipes, exhaust pipes, steam pipes for conveying corrosive gases, high-pressure oil pipes for steel rolling mills, Senior high school and low-pressure pipes for aircraft hydraulic systems and cold-pressure systems, rectifying towers, heat exchangers, kettles, Lining of towers and tanks, valves and other chemical equipment. The performance of the seal has a great influence on the efficiency and performance of the whole machine equipment. PTFE material has the characteristics of corrosion resistance, aging resistance, low friction coefficient and non-stick, wide temperature range, and good elasticity, which makes it very suitable for manufacturing seals with high corrosion resistance requirements and the operating temperature is higher than 100 ℃. PTFE such as machine, heat exchanger, high pressure vessel, large diameter vessel, valve, pump groove flange seal, glass reaction pot, flat flange, large diameter flange seal, shaft, piston rod, valve rod, worm pump, pull rod seal and so on.