PTFE Plate Used for Food, Medicine, Paper, Chemical Fiber, Fine Chemicals, etc

summarize :
Teflon plate (also called four fluorine board, teflon plate, teflon plate) divide into two kinds, mould pressing and cutting moulding board is made of ptfe resin by moulding in ordinary temperature, method of forming, then through sintering, cooling and. Polytetrafluoroethylene turning plate is made of polytetrafluoroethylene resin by pressing, sintering and spinning. Its products are widely used, has very excellent comprehensive performance, resistance to high and low temperature (192 ºC -- 260 ºC), corrosion resistance, strong acid, strong alkali and aqua regia, etc.), weather resistance, high insulation, high lubrication, adhesion, non-toxic and other excellent features.

It is a polymer compound made of tetrafluoroethylene, and its structure is simple -[- cf2-cf2 -]n-.
Chemical stability, corrosion resistance (teflon PTFE or F4 is one of the most corrosion resistant materials in the world today, "plastics king" is commonly known as teflon, it is a one of the best plastic corrosion resistance. It from known corrosion of acid, alkali, salt, antioxidant, is the most severe of aqua regia and helpless for it, hence the name plastic king, in addition to the molten metal liquid and sodium fluoride, ability all other chemicals, which are widely used in all kinds of need of acid and alkali and organic solvent resistance, sealing, high lubrication is not sticky, electric insulation and good anti-aging endurance, excellent heat resistance (at + 250 ºC to 180 ºC temperature long-term work)

Temperature - 20 ~ 250 ºC ~ + 482 ° F (- 4), allowing a sudden cold heat, or alternating operation.
Pressure -0.1 ~ 6.4Mpa (all negative pressure to 64kgf/cm2) (Full vacuum to 64kgf/cm2)
It has solved many problems in China's chemical, petroleum and pharmaceutical industries. Polytetrafluoroethylene seals, gaskets, gaskets, ptfe seals, sealing gaskets are made of suspended polymerized polytetrafluoroethylene resin molding. Polytetrafluoroethylene (ptfe) has the characteristics of chemical corrosion resistance compared with other plastics. It has been widely used as sealing material and filling material.
The complete pyrolysis products at around 500 degrees Celsius have tetrafluoroethylene, hexafluoropropylene, and octafluorobutane, which decompose highly corrosive fluorine gases at high temperatures.
 
At present, various kinds of teflon products have played an important role in the national economy of chemical industry, machinery, electronics, electric appliance, military industry, aerospace, environmental protection and bridge.
Tetrafluoroethylene board applies to - 180 ºC ~ + 250 ºC temperature, mainly used for electrical insulation materials and the lining of contact corrosion medium, bearing block, an axle seal and lubrication materials, rich cabinet furniture used in light industry, it is widely used in chemical, pharmaceutical, dye industry containers, storage tank, reaction tower kettle, large pipe anti-corrosion lining materials; Aviation, military and other heavy industries; Sliding block and guide rail for machinery, construction and transportation; Printing and dyeing, light industry, textile materials and so on.

Material advantages
High temperature resistant, use the working temperature of 250 ºC.
Low temperature - good mechanical toughness; Even if the temperature drops to 196 ºC, also can keep 5% elongation.
Corrosion - resistant - to most chemicals and solvents, showing inertia, strong acid alkali, water and various organic solvents.
Weather resistant - the best aging life in plastic.
High lubrication - is the lowest friction coefficient in solid materials.
Non-adhesion - is the smallest surface tension in solid materials, no adhesion to any substance, mechanical property has very little friction coefficient, only 1/5 of polyethylene, which is an important feature of perfluorocarbon surface. Because the fluorine - carbon chain intermolecular force is extremely low, ptfe is not viscous.
Non - toxic - has the physiological inertia, as the artificial blood vessel and viscera long implantation in the body without adverse reactions.
The dielectric constant and dielectric loss of ptfe in wider frequency range are very low, and the breakdown voltage, volume resistivity and arc resistance are high.

The radiation resistance of ptfe is poor (104 rad), which is degraded by high energy radiation, and the electrical properties and mechanical properties of the polymer are obviously decreased. Ptfe can be compressed or extruded to form; It can also be made into water dispersible liquid for coating, impregnating or making fibers. Ptfe in atomic energy, aerospace, electronics, electrical, chemical, machinery, instruments, meters, construction, textile, food and other industries are widely used in high and low temperature resistance, corrosion resistant materials, insulation materials, anti-sticking coating, etc.
Atmospheric aging: resistance to radiation and low permeability: long exposure to the atmosphere, surface and performance remains unchanged.
Incombustibility: the oxygen limit index is below 90.
Alkali resistance: insoluble in strong acid, strong alkali and organic solvents.
Oxidation resistance: corrosion of strong oxidizing agents.
Acid base: neutral.
The mechanical properties of ptfe are soft. It has very low surface energy.
Polytetrafluoroethylene (F4,PTFE) has a series of excellent performance: high temperature-long-term use of 200~260 degrees, low temperature resistance - still soft at -100 degree; Corrosion resistance - water and all organic solvents; Weathering - the best aging life in plastics; High lubrication - the minimum friction coefficient in plastic (0.04); Nonviscous - the smallest surface tension in a solid material without adhering to any material; Non-toxic -- physiological inertness; Excellent electrical performance is the ideal grade C insulation material.

The appearance standard
(1) the color of the board is resin.
(2) it should be homogeneous in texture and smooth in appearance. No cracks, bubbles, layers, mechanical damage, knife marks and other defects are allowed.
(3) it is allowed to have a slight cloud pattern of loosening.
(4) there are no more than 1 non-metallic impurities with a diameter of 0.1-0.5mm and no more than 1 non-metallic impurities in the area of 10 x 10cm, with a diameter of 0.5-2mm.