Fluoroelastomer can be divided in following ways.
A. Curing system
B. Monomers
C. Applications
For curing system, there are general two ways: Bisphenol curable fkm and peroxide curable fkm. Bishpenol curable fkm usually owns the features of low compression set, which is used for molding sealing parts like orings, gaskets, irregular rings, profiles. And Peroxide curable fkm has better chemical resistance and mechanical properties. It has great resistance to steam. It can be used in smart wearables or Lithium battery.
For monomers, there are copolymer which is made by Vinylidene fluoride (VDF) and hexafluoropropylene (HFP); and terpolymer which is made by Vinylidene fluoride (VDF), tetrafluoroethylene (TFE) and hexafluoropropylene (HFP). FKM copolymer has 66% fluorine content can be used in general application. While fkm terpolymer has fluorine content about 68%, it can be used in harsh environment which requires better chemical/ media resistance.
For applications, FUDI supply molding, calendaring, extrusion grades fkm. And we also supply special grades like low temperature resistance grade GLT, high fluorine content with fluorine content 70%, steam and alkali resistance grade FEPM Aflas, excellent chemical resistance grade perfluoroelastomer ffkm.
|
Copolymer |
Curing |
Features |
Application |
| Bisphnol Curing | Low compression set | Oil sealsShaft sealsPiston seals
Fuel hoses Turbo charge hoses O-rings |
|
| Peroxide Curing | Good resistance to steam | ||
| Good resistance to chemical | |||
| Good bending fatigue resistance | |||
|
Terpolymer |
Bisphnol Curing | Good resistance to polar solvents | |
| Good sealing property | |||
| Peroxide Curing | Good resistance to polar solvents | ||
| Good resistance to steam | |||
| Good resistance to chemical | |||
| Good resistance to acids | |||
| Low temperature FKM | Good sealing property under low temperature | EFI OringsDiaphragms | |
| Good resistance to acids | |||
| Good mechanical property | |||
FUDI Equivalent grade of FKM
|
FUDI |
Dupont Viton |
Daikin |
Solvay |
Applications |
| FD2614 | A401C | G-723 (701, 702, 716) |
Tecnoflon® FOR 80HS | Mooney Viscosity about 40, fluorine contains 66%, copolymer designed for compression molding. High recommended for O-rings, gaskets. |
| FD2617P | A361C | G-752 | Tecnoflon® FOR 5312K | Mooney Viscosity about 40, fluorine contains 66%, copolymer designed for compression, transfer and injection molding. High recommended for oil seals. Good metal bonding properties. |
| FD2611 | A201C | G-783, G-763 | Tecnoflon® FOR 432 | Mooney Viscosity about 25, fluorine contains 66%, copolymer designed for compression and injection molding. High recommended for O-rings and gaskets. Excellent mold flow and mold release. |
| FD2611B | B201C | G-755, G-558 | Mooney Viscosity about 30, fluorine contains 67%, teopolymer designed for extrusion. High recommended for fuel hose and filler neck hose. |
Post time: Jun-20-2022
