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Characteristics of fluorosilicone sealing ring of fluoroplastic pump

by:ORK      2022-11-05
The unique characteristics of fluoroplastics in fluoroplastic pump fluorosilicone seals. It is determined by the structural characteristics of the fluorine content in its molecular structure. First, fluorine is the most electronegative element in the element table and has a great electron-withdrawing effect. When it is fused with an oxygen atom, it is converted into a carbon-fluorine (C-F) covalent bond with a high bond energy, and this kind of bond energy also increases with the increase of the fluorination level of the oxygen atom; in addition, the fluorine atom in the molecular structure is Existence increases the kinetic energy of the carbon-carbon bond (C-C). It also increases the energy of the fluorinated oxygen atom to fuse with other elements. This makes fluorine rubber with high temperature resistance, oxygen resistance and chemical resistance. Secondly, the half length of the fluorine atom is close to half the length of the carbon-carbon bond (C-C), which can be inseparably ordered around the oxygen atom to generate perfluorocarbons; in addition, the carbon-fluorine bond (C-F) is very long, which makes it It has a very good shielding effect on carbon carbon cones (C-C). Furthermore, the carbon-carbon bonds (C-C) are further maintained with high heat resistance and organic chemical plasticity. Fluorosilicone sealing ring Naturally, fluorine atoms also cause bad harm to the fluorosilicone sealing ring, such as low ductility and poor cold resistance. Fluorine has a bright acid, and the chemical substances formed by the fusion with other elements are very stable. It has high temperature resistance, corrosion resistance, moisture resistance, oil resistance, lubricating, degumming, aging resistance, dielectric strength, and low pollution. , low intake temper, low emissivity and other outstanding characteristics. Fluorine is widely used in household appliances, office automation equipment, semiconductor materials, cars and other industries. Fluorine rubber blends the characteristics of vulcanized rubber. In addition to cold resistance, it is better than silicone, acrylic vulcanized rubber, nitrile rubber, and EPDM. The fluorine rubber in the fluorine plastic pump fluorine silicone sealing ring has the following excellent characteristics. (1) Heat resistance characteristics of fluoroplastic pump fluorosilicone sealing ring: it can be used in the following 250 ℃ for a long time, the application temperature reaches 300 ℃ in the short term, and the application temperature of fluorine rubber (FKM) is 300 ℃. The application temperature of butyl rubber (IIR), ethylene propylene diene monomer (EPDM) and acrylic resin vulcanized rubber (ACM) can only be 150 ℃; the application temperature of nitrile butadiene rubber (NBR) can only be 130 ℃. (2) Fluoroplastic pump fluorosilicone sealing ring has excellent acid and alkali resistance, chemical resistance and corrosion resistance: fluorine rubber has better wear resistance than other position glues. Fluorine rubber, silica gel, and acrylic resin vulcanized rubber are soaked in automotive gasoline and xylene. The volume change rate of fluorine rubber is small. The volume change rate in automotive gasoline is only 3%. In xylene, the volume change rate is only 6%, far lower than silicone rubber and acrylic resin vulcanized rubber. In ASTM No. 3 grease, soaked at 120°C for 2 days, the volume change rate of fluorine rubber can only be 2%, which is far less than that of EPDM (418%), styrene-butadiene rubber (163%), and nitrile rubber seals (6 %), silica gel (32%). The key characteristics of fluoroplastic in the fluorosilicone sealing ring of fluoroplastic pump are heat resistance and solvent corrosion resistance, and it has very good aging resistance and active oxygen resistance, and has good sealing performance. Even under very harsh environmental standards, fluorine rubber still has excellent wear resistance characteristics; and can withstand operating temperatures up to 200 ° C. Sealing rings made of such raw materials. The sealing lip allows short-term oil-free operation. Fluorine rubber can resist the corrosion of all organic chemicals used, and can prevent corrosion and leakage of industrial equipment.
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