FKM(Fluoroelastomer)
FKM(Fluoroelastomer)

Item specifics

Type
Other

Review

Description

                                            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

26202

26302

26404

   26504

26704

26902

26120

26140

Mooney viscosity (ML(1+10)1210C)

20-29

30-39

40-49

50-59

65-85

90-99

110-129

130-149

Appearance

White or light-yellow flake

Fluorine content(%)

66

Density 

(g/cm3) 23 0C

1.82+0.02

Tensile strength after press cure (MPa) 1770C,10min≥

8

8

9

9

9

9

10

10

Tensile   strength after  post   cure(Mpa) 2300C,24H≥

10

10

11

11

12

12

13

13

Elongation at break after press cure

(%)1770C,10min≥

200

200

200

200

200

200

180

180

Elongation at break after post cure 

(%)2300C,24H≥

180

180

180

180

180

180

160

160

2000C 70H 

Compressibility  

20% Compression 

set (%)≤

20

20

20

20

20

20

12

12

 


2.  The basic formula:

     FKM raw gum: 100g;

     Bisphenol AF: 2g;

     Vulcanization accelerator BPP: 0.5g;

     MgO: 3g

     N990 MT Carbon Black: 30g

     Ca(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.