Tecnoflon® FKM Ionic Curable grades are copolymers and terpolymers with a fluorine content range from 66% to 70% and are well suited for automotive, industrial and aerospace applications. The HS copolymers are designed for low post-cure cycles and cure-incorporated and rubber-to-metal bonding grades are available for all molding techniques.
Copolymers & Terpolymers
Tecnoflon® FKM copolymers are based on vinylidene fluoride and hexafluoropropylene with fluorine content of 66%. There are two types of copolymers: cure incorporated and non-cure incorporated (gumstock).
Tecnoflon® FKM ionic curable terpolymers are based on vinylidene fluoride, hexafluoropropylene and tetrafluoroethylene with fluorine content between 68% to 70%. There are two types of terpolymers: cure incorporated and non-cure incorporated (gumstock).
Fluoroelastomers Fluorine Content [%]
Readily processable:Tecnoflon® Ionic Curable FKMs can be processed by conventional rubber processing methods.
Compression Molding:Compression molding is the oldest and most common form of molding of FKMs.
Transfer Molding:A medium viscosity polymer is recommended. A careful consideration of cure rate is important to ensure scorch safety.
Injection Molding:Injection molding is the most demanding molding process. The injection molding grade selected should have a molecular weight distribution to achieve the best flow and good scorch safety with a very steep cure rate. Molding fouling must be minimized by using formulations minimizing process aids and metal oxides.
Extrusion:Extrusion of FKMs is used to form extruded shapes, tubing, O-ring cord, and compression molding pre-forms.