Handbook of Adhesives and Sealants

16.8: Elastomers

16.8 Elastomers

There are over 30 broad groupings of chemical types of elastic polymers. These are arranged by ASTM D 1418 into categories of materials having similar chemical chain structures. These elastomer categories are shown in Table 16.20. Included is information regarding their surface energy.

Table 16.20: ASTM Designation of Common Elastomers

ASTM D 1418 Nomenclature

Elastomer generic name

Common name

Polymer source

Critical surface energy, mJ/m 2

Water contact angle, degrees

ABR

Acrylate-butadiene rubber

None

Uniroyal

B.F.Goodrich

Polymer Corporation

BR

Butadiene rubber

None

B.F.Goodrich

Goodyear Chemical

Phillips Petroleum

General Tire

Polymer Corporation

32

CR

Chloroprene rubber

Neoprene

DuPont

38

IIR

Isobutylene-isoprene rubber

Butyl

Enjay

B.F.Goodrich

Polymer Corporation

27

115

IR

Isoprene, synthetic

Synthetic natural rubber

Goodyear Chemical

Shell Chemical

B.F.Goodrich

31

106

NR

Cis-polyisoprene

Natural rubber

Various

120

NBR

Nitrile butadiene rubber

Bune-N or nitrile

Fire stone

Goodyear Chemical

B.F.Goodrich

Uniroyal

Polymer Corporation

37

97

SBR

Styrene butadiene rubber

SBR

B. F. Goodrich

Firestone

Uniroyal

Phillips Petroleum

Goodyear Chemical

Shell Chemical

33

95

CSM

Chlorosulfonated polyethylene

Hypalon

DuPont

37

96

EPDM

Ethylene-propylene-unsaturated dieneterpolymer

EPDM

Enjay

DuPont

Uniroyal

EPM

Ethylene propylene copolymer

EPM

Enjay

28

105

FKM

Vinylidine fluoride hexafluoropropylene copolymer

Viton

Fluorel

Kel-F

DuPont

3M

CO

Epichlorohydrin elastomer

Hydrin

B. F. Goodrich

Chemical

Hercules, Inc.

35

95

AU

Polyester urethane rubber

Ester urethane

General Tire

Uniroyal

EU

Polyether urethane rubber

Ether urethane

DuPont

None

Polysulfide rubber

Polysulfide

Thiokol

MQ or Si

Dimethyl silicone

Silicone rubber

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