Types of Elastomers:

Types of Elastomers:

Rubber must be vulcanized to obtain real elastic properties.

Unsaturated rubbers that can be vulcanized are

• Natural Rubber (NR)

• Polyisoprene (IR)

  • Butyl rubber (copolymer of isobutylene and isoprene, IIR)

  • Halogenated butyl rubbers (Chloro Butyl Rubber: CIIR; Bromo Butyl Rubber: BIIR)

• Polybutadiene (BR)

  • Styrene-butadiene Rubber (SBR)

  • Nitrile Rubber (NBR), also called buna N rubbers

  • Hydrated Nitrile Rubbers (HNBR) Therban® and Zetpol®

• Chloroprene Rubber (CR), polychloroprene, Neoprene, Baypren etc.

Saturated Rubbers that cannot be cured by sulfur vulcanization:

• EPM (Ethylene propylene rubber) and EPDM rubber (Ethylene propylene diene rubber )

• Epichlorohydrin rubber (ECO)

• Polyacrylic rubber (ACM, ABR)

• Silicone rubber (SI, Q, VMQ)

• Fluorosilicone Rubber (FVMQ)

• Fluoroelastomers (FKM, FPM) Viton®, Tecnoflon®, Fluorel® and Dai-El®

• Perfluoroelastomers (FFKM)

• Tetrafluoro ethylene/propylene rubbers (FEPM)

• Chlorosulfonated Polyethylene (CSM), (Hypalon®)

• Ethylene-vinyl acetate (EVA)

Other types of elastomers are:

• Thermoplastic Elastomers (TPE), for example Hytrel®, Santoprene® etc.

• Polyurethane rubber

• Resilin, Elastin

• Polysulfide Rubber