Industry Knowledge

Rubber elastomer

Physical and chemical properties

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 KF-6210KF-8310
HardnessShore A +/-5 Points7070
Fracture strengthMpa
119
%252223

100% modulus 

Mpa
5.34.2

Compression deformation

%, 70 h at %200℃27.021.0

Thermal aging

250℃下70 h-5-4
Change of fracture strength: %-21-13
Change of fracture strength: %+18+10

D.I.Water

Hardness change after 70 h at 100℃: Shore A, Point-8-1
Change of fracture strength: %-8.5-6.2
Change of fracture elongation: %+50-13.7
Volume change: %+9.3+1.4

Fluid immersion

Volume change

△V%

Ethane+5+3
Cyclohexane+3+1
Benzene+17+11
Toluene+45+29
Concentrated sulfuric acid+6+3
Tetrachloromethane+2+1
Vinyl Chloride+10+6
Chlorobenzene+10+5
Nitric acidˇˇ
Hydrofluoric acidˇˇ
Hydrogen fluorideˇˇ
Ethanol+2+1
Nitrobenzene ˇˇ
Water vapor+7+4