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Wide Molecular Weight Distribution Fluoroelastomers

Wide Molecular Weight Distribution Fluoroelastomers

Wide Molecular Weight Distribution Fluoroelastomers
CategoriesFKM
AlbumView larger image
BrandFlurine
Model26404,26504,26704
FeaturesWide molecular weight distribution
UsesShaft seals, gaskets, O-rings, extruded shapes, molded tubing
FormsWhite or light-yellow flake
Update Time2019-12-06
Detail Information


Flurine® 26404,26504 and 26704 are wide molecular weight distribution Fluoroelastomer, which is comprised of vinylidene fluoride (VF2) and hexafluoropropylene (HFP), frequently used in many industries including automotive, fluid power, appliance and chemical industries. It improves the processing performance and has good fluidity. It is resistant to oils, fuels, aliphatic series, aromatic hydrocarbons, lubricants, and most mineral acids.

General

Features

Wide molecular weight distribution

Uses

Shaft seals, gaskets, O-rings, extruded shapes, molded tubing

Forms

White or light-yellow flake

Items

Typical Value

Test Method

26404

26504

26704

Physical Properties

Fluorine Contentmass%

66

66

66

 

Densityg/cc

1.81~1.83

1.81~1.83

1.81~1.83

ASTM D297

Mooney Viscosity

40~49

50~59

65~79

ASTM D1646 ML 1+10 at 121°C

Water content

0.10

0.08

0.08

ASTM D 5668

Solubility

Soluble in lower ketones and esters

 

Vulcanization Properties

T10(s)

<70

<70

<70

ASTM D5289

T90(s)

<140

<140

<140

ASTM D5289

Mechanical Properties

Tensile strengthMPa

14.0

14.0

14.0

ASTM D412 Method A

100% Modulus

4.8

5.0

5.2

ASTM D412 Method A

Elongation at Break%

170

170

170

ASTM D412 Method A

Tearing Strength(KN/m)

19

19

19

ASTM D624

Hardness, Shore A

74

74

74

ASTM D2240, Type A

Compression Set

18

18

18

ASTM D395, Test B 70 hours at 200℃

Air-oven aging

ISO 188 After Dry Heat Aging;70 hours at 230℃

Tensile strength change rate%

-15

-12

-10

ASTM D412 Method A

Elongation at Break change rate(%)

-10

-8

-6

ASTM D412 Method A

Hardness change, Shore A

-2

-2

-1

ASTM D2240, Type A 

Thermal Properties

Glass Transition Temp, Tg(℃)

-20

-20

-20

ASTM D1329

Brittleness Temperature(℃)

-30

-30

-30

ASTM D2137

Chemical resistance Properties

Resistance to liquids

3 # standard oil

Volume change rate(%)

+2

+2

+2

ASTM D471 72 hours at 150℃

Mass change rate(%)

+1

+1

+1

ASTM D471 72 hours at 150℃

Formulation

Curing condition

Polymer            100      MT carbon black,N990   30

Calcium hydroxide    6        Magnesium oxide         3

Fluorocure-5#        2.5

Press

Oven

6min at 177°C

24h at 230°C


1)Store and use all fluoroelastomers only in a well-ventilated area.

2)Do not smoke in areas contaminated with dust from fluoroelastomers.

3)Avoid eye contact. After handling fluoroelastomers wash any skin that came in contact with the product with soap and water.

4)Potential hazards, including evolution of toxic vapors, exist during compounding or processing under high temperatures. 

5)Before processing the fluoroelastomers, read and consult the MSDS, and follow all label directions and operation cautions.

1)Fluoroelastomers be packed in PVC bags in the shape of rubber film, each bag weight 5KGS, and finally be put into a carton. Each carton contains 5 bags with net weight 25KGS.

2)It must be stored in a clean, cool, and dry place. The storage life is one year from the date of production. It must be re-inspected if over one year and only can use if qualified.

3)It is transported as non-dangerous chemicals. Avoid excessive vibration and far away from pollution, sunshine and water during the transport.
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