FKM(fluoroelastomer)
FKM (Fluoroelastomer)FKM is copolymer of vinylidene fluoride and hexafluoropropene. The content of fluorine is 66% byweight. It can be molded, extruded or injected into rubber products, such as O-rings, gaskets, seals and diaphragms as well as hoses etc.Items Mooney viscosity (ML(1+10)1210CAppearanceWhite or light-yellow flakeFluorine content(%)66Density(g/cm3) 23 0C1.82+0.02Tensile strength after press cure (MPa) 1770C,10min≥8899991010Tensile strength after post cure(Mpa) 2300C,24H≥Elongation at break after press cure（%）1770C,10min≥Elongation at break after post cure（%）2300C,24H≥C 70H Compressibility 20% Compressionset (%)≤. The basic formula:FKM raw gum: 100g;Bisphenol AF: 2g;Vulcanization accelerator BPP: 0.5g;MgO: 3gN990 MT Carbon Black: 30gCa(OH)2: 6g;3. Package, storage and transportation:(1). Fluoroelastomer is packed in PE bags in the form of flake, and then packed into carton with net weight 20kg per carton.(2). Fluoroelastomer should bestored in clean, dry and cool warehouse. It can be transported as non-hazardous chemicals and should be far away from pollution sources, sunshine as well aswater during transportation.(3). It is suggested that fluoroelastomer storing time limit should be one year after production. If exceeding one year, these products should be retested, they could be used continuously after being retested up to grade.
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