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Cảm ơn Cty Goodyear.
ASTM Designation
|
Common Name
|
COMPOSITION
|
GENERAL
PROPERTIES
|
BR
|
Polybutadiene
|
Butadiene
|
Excellent abrasion and low temperature resistance. High resilience
|
CIIR
|
Chlorobutyl isoprene
|
Chlorinated isobutylene
|
Same general properties as Butyl (see IIR below).
|
CR
|
Neoprene®
|
Polychloroprene
|
Good weathering resistance and flame retarding. Moderate resistance to petroleum based fluids. Good physical properties.
|
CSM
|
Hypalon®
|
Chlorosulfonyl Polyethylene
|
Excellent ozone, weathering and acid resistance. Good abrasion and heat resistance. Good resistance to petroleum based fluids
|
EA
|
Vamac®
|
Ethylene-Acrylic Elastomer
|
Outstanding heat, ozone, and oil resistance
|
EPDM
|
Ethylene Propylene Rubber
|
Ethylene-Propylene diene-terpolymer
|
Excellent ozone, chemical, and aging characteristics. Poor resistance to petroleum based fluids
|
FEP
|
Teflon®
|
Fluorinated Ethylene Propylene
|
Excellent chemical resistance, electrical properties and flame resistance. Low coefficiency to friction, high strength at elevated temps, low permeability.
|
FKM
|
Fluoroelastomer
|
Fluorocarbon Rubber
|
Excellent high temperature resistance, particularly in air or oil. Very good chemical resistance.
|
IIR
|
Butyl
|
Isobutylene-isoprene
|
Very good weathering resistance. Low permeability to air. Good physical properties. Poor resistance to petroleum based fluids.
|
IR
|
Polyisoprene
|
Polyisoprene, synthetic
|
Same properties as Natural Rubber (see NR below).
|
Mod XLPE
|
Modified Cross-Linked Polyethylene
|
Proprietary
|
Excellent chemical resistance with good heat and electrical properties
|
NBR
|
Nitrile
|
Acrylonitrile-butadiene
|
Excellent resistance to petroleum based fluids. Moderate resistance to aromatics. Good physical properties
|
NR
|
Natural Rubber
|
Polyisoprene, natural
|
Excellent physical properties including abrasion and low temperature resistance. Poor resistance to petroleum based fluids
|
SBR
|
SBR
|
Styrene-butadiene
|
Good physical properties, including abrasion resistance. Poor resistance to petroleum based fluids.
|
|
UHMWPE
|
Ultra high molecular weight polyethylene
|
Excellent resistance to a broad range of chemicals with excellent abrasion resistance.
|
XLPE
|
Cross-Linked Polyethylene
|
Polyethylene and cross linking agents
|
Excellent chemical resistance with good heat
and electrical properties.
|
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