Document om45w9V5GkVrvN3Y8BwxLR16R

[Conclusion] - Fluorinated grease is selected and used because of its advanced properties such as heat resistance, chemical resistance, and no effect on electrical contacts for which other lubricants' characteristics can't substitute. - Fluorinated grease is mainly used in the closed system of specific machines and parts for a long time. - Fluorinated grease is 10-1000 times more expensive than general-purpose grease. Even if refill or replacement is needed, it is unrealistic to replace and consume a large amount of this extremely expensive fluorinated grease for maintenance without any control of release to environment in factories. Therefore, the possibility of it being discarded/discharged at the stage of use is extremely low. Except for maintenance and repair in some cases, fluorinated grease is actually used without its refill and replacement during the long service life of machinery, equipment, and consumer products. - Most of fluorinnated grease remaining in closed system components may be treated under the WEEE/ELV regulation and be disposed through ATF (Approved Authorised Treatment Facility). [Main purpose of fluorinated grease] - Specific machines used under high temperature conditions. - Specific machines under electrical contacts, bearings, sliding parts. (Silicone grease cannot be used because it gives it badly effect for electrical point or contact.) - Specific machines that come into contact with chemicals, solvents, and fuels. - Specific rubbers and plastics. (oil seals, packings etc.) [Application examples with fluorinated grease] - Contact parts of home appliances, high voltage circuit breakers, etc. - Such as conveyor chains and rollers for drying and baking furnaces, film tenters, ovens, and packaging machines. - Centrifugal separators, solvent washers, chemical plants, and others. - Home appliances and housing equipment, pillow blocks, slide bearings, rolling bearings, ball screws, oil seals, packings, etc. - Semiconductor manufacturing equipment, vacuum equipment, vacuum pumps, clean rooms. - LBP (Laser Beam Printer), PPC (Plain Paper Copier), centrifuge, Chemical or solvent resistance valves. [Price and cost] - Fluorinated grease is 10-1000 times more expensive than general mineral oil grease. - Therefore, fluorinated grease may be used in specific machines, not "open and disposable", but "closed and used" for a long time. - In some cases, it is the same as the machine life and never refilled and replaced. At least it is not something that is consumed and replaced in large quantities like general-purpose grease. Comparison chart: Base oil in lubricating grease Mineral oil Lubricity Heat-resistant Oxidation stability Low temperature performance Anti-rubber properties Anti-plastic properties Good Poor Poor Fair Fair Fair note Low-priced Di ester Excellent Fair Fair Outstanding Poor Poor Poor antirubber/plastic properties Polyol ester Excellent Good Good Excellent Poor Poor Poor antirubber/plastic properties Synthetic hudrocarbon Good Good Good Poly glycol Fair Good Fair Excellent Good Excellent Excellent Outstanding Poor incompatible with natural rubber and EPDM. Phenyl ether Good Excellent Excellent Good Good Excellent Silicone oil PFFEs Poor Outstanding Outstanding Good Outstanding Outstanding Outstanding Good Outstanding Outstanding Poor lubricity and badly effect for electric point of contact. Outstanding Outstanding The most high perfomance but very expensive. PFPEs is "end point of lubricant technology" Comparison chart: Thickener in lubricating grease Thickener type Single metallic soap Composite metal soap Urea Organic Inorganic Calcium soap (stearate) Calcium soap (hydroxy-stearate) Aluminnium soap Sodium soap Lithium soap (stearate) Lithium soap (hydroxy-stearate) Calcium complex soap Aluminnium complex soap Lithium complex soap Aromatic diurea Aliphatic diurea Alicyclic diurea Tri urea Tetra urea Sodium terephthalamate PTFE Bentonite Silica gel Max. temperatur e 70C 100C 80C 120C 130C 130C 150C 150C 150C 180C 180C 180C 180C 180C 180C 250C 200C 200C water resistance Fair Good Good Poor Good Good Good Excellent Good Good-Excellent Good-Excellent Good-Excellent Good-Excellent Good-Excellent Good Outstanding Fair Poor Shear stability note Fair Good Poor Fair Good Excellent Good Excellent Excellent Good-Excellent Good-Excellent Good-Excellent Good-Excellent Good-Excellent Good Outstanding Good Poor old technology old technology old technology old technology most commonly used most commonly used improved product with excellent heat resistance improved product with excellent heat resistance improved product with excellent heat resistance mainstream in Japan mainstream in Japan mainstream in Japan mainstream in Japan mainstream in Japan used for long life most stable. requires large quantities. expensive cost. has long been used for high temperature easy to rust