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| FKM không phải là cao su tốt nhất |
Thêm bài trong web dưới đây, viết về FKM. Các bạn vào đường dẫn sau để hiểu thêm về một nguyên liệu.
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Fluroelastomer or FKM is a class of synthetic rubber designed for very high temperature operation. FKM provides extraordinary levels of resistance to chemicals, heat and oil, while providing useful service life above 200°C. FKM are not a single entity but a family of fluoropolymer rubbers. Fluoroelastomers or FKM can be classified by their fluorine content, 66%, 68%, & 70% respectively. This means that FKM rubber having higher fluorine content, have increasing fluids resistance derived from increasing fluorine levels.
Viton
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| FKM, Viton là cao su cần nghiên cứu dùng đúng vị trí |
To get a better idea on Fluroelastomers, check out our articles
FKM (Fluoroelastomers) for sealing
FFKM Performance and Application
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Properties of Fluoroelastomers (FKM)
- Fluoroelastomers have excellent resistance to chemical attack by oxidation, by acids and by fuels.
- They also have good oil resistance.
- They have limited resistance to steam, methanol, hot water, and other highly polar fluids.
- The outstanding heat stability and excellent oil resistance are due to the high ratio of fluorine to hydrogen, the strength of the carbon-fluorine bond, and the absence of unsaturation.
- The latest FKM polymers have a much broader fluids resistance profile than standard fluoroelastomers.
- They are able to withstand strong bases and ketones as well as aromatic hydrocarbons, oils, acids, and steam.
- Peroxide cured fluoroelastomers have inherently better water, steam, and acid resistance.
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| FKM, Viton được nhớ đến như một cao su tổng hợp đặc biệt |
FKM Applications
FKM provides premium, long-term reliability even in harsh environments. A list of its applications is given below:- Aerospace: O-ring seals in fuels, lubricants, Valve stem seals, Fuel hoses, Fuel Injector O-rings, In tank and quick connect, Flue duct exp. Joints, Valve liners, Roll covers, Sheet stock/cut gaskets etc.
- Automotive: Shaft seals, Check valve balls, Diaphragms, Military flare binders, Electrical connectors, Tire valve stem seals, Clips for jet engines, Lathe cut gaskets etc.
- Industrial: Hydraulic o-ring seals and hydraulic systems, Manifold gaskets, Fuel tank bladders, Firewall seals, Engine lube siphon hose fuel system seals, Gaskets (valve & manifold) etc.
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| Viton, FKM là loại cao su nhân tạo giá rất cao |
FKM is of high value in use as a class of synthetic rubber which provides extraordinary levels of resistance to chemicals, oil and heat. This type of rubber can be fabricated into seals, o-rings, and hoses for a variety of high performance applications in the automotive, aerospace, and petrochemical industries.
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Nguồn :
http://www.industrialrubbergoods.com/fluoroelastomers.html
