Songhan Plastic Technology Co.,Ltd.
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Butyl Rubber (IIR, CIIR, BIIR)

Category Polymer , Thermoset , Rubber or Thermoset Elastomer (TSE)
Manufacturer
Trade Name
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
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Material Notes:
Butyl rubber is a copolymer of isoprene (minor) and isobutylene. Chlorobutyl (CIIR) and Bromobutyl (BIIR) contains 1.2% of the halogen. The halogen addition changes the cure characteristics and can improve adhesion.IIR rubber resists degradation by fats/oils/greases and ozone and other strong oxidizing chemicals. IIR rubber is attacked by petrochemical solvents including aromatics.
Physical Properties Metric English Comments
Density 1.15 - 1.35 g/cc
0.0415 - 0.0488 lb/in³
Compounded
Mechanical Properties Metric English Comments
Hardness, Shore A 35 - 95
35 - 95
Depends on compounding
Tensile Strength, Ultimate 17.0 MPa
2470 psi
Compounded Tire
Elongation at Break 400 - 800 %
400 - 800 %
Thermal Properties Metric English Comments
Maximum Service Temperature, Air 120 °C
248 °F
Minimum Service Temperature, Air -25.0 °C
-13.0 °F
Electrical Properties Metric English Comments
Dielectric Strength 24.0 kV/mm
610 kV/in
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