Tecnoflon® FKM Ionic Curable

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.


Tecnoflon® FKM & PFR FFKM Technical Data Sheets


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 [%]

GF-Tecnoflon-methanol


Thermal Rating

GF_Tecnoflon_ThermalRate


Tecnoflon® FOR grades selection chart

Tecnoflon-FOR-grades-selection-chart



Processing

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.

Tecnoflon® FKM Ionic Curable Typical Properties

Raw Copolymers

N 215/UN 535N 935N HN 60HSN 90HS
N 215/UN 535N 935N HN 60HSN 90HS
Flourine Content
(weight %)
666666666666
Specific Gravity (g/cm3)
ASTM D792
1.811.811.811.811.811.81
Rubber Mooney Visc. ML(1+10) @ 121°C (Units)
ASTM D1646
1027621242745
Tensile Strength (MPa)
ASTM D412C
14.117.518.519.515.016.1
Elongation at Break (%)
ASTM D412C
186182185175200190
Hardness (Shore A)
ASTM 2240
737475776870
C.Set 70h @200°C on #214 O-Ring (%)
ASTM D395
Method B
181313121414
TR10 (°C)
ASTM D1329
-17-17-17-17-17-17
Post Cure @ 250°C(8+16)h(8+16)h(8+16)h(8+16)h(8+16)h(8+16)h
Notes1)1)1)2)2)

1) FDA
2) Curable without CA(OH)2, low post-cure