Accession Number : ADA307195

Title :   Coagents for Improved Elastic Recovery in Polyester Urethane Elastomers.

Descriptive Note : Technical rept.,

Corporate Author : ROCK ISLAND ARSENAL IL

Personal Author(s) : Williams, John A.

PDF Url : ADA307195

Report Date : JAN 1966

Pagination or Media Count : 25

Abstract : A number of chemicals were evaluated as coagents in the peroxide vulcanization of polyester urethanes to determine their ability to produce vulcanizates with good elastic recovery. Several coagents evaluated with high levels (6 pphr) of peroxide produced vulcanizates with improved elastic recovery compared with vulcanizates crosslinked with high peroxide alone. Tensile strength was unaffected while modulus and hardness increased and elongation decreased. Certain coagents when evaluated with low levels (3 pphr) of peroxide produced vulcanizates with improved elastic recovery and only slightly decreased tensile strength compared with vulcanizates cured with high peroxide alone.

Descriptors :   *ELASTOMERS, *CURING, *VULCANIZATES, TENSILE STRENGTH, RECOVERY, ELASTIC PROPERTIES, ELONGATION, POLYESTER PLASTICS, URETHANES, PEROXIDES, VULCANIZATION.

Subject Categories : Elastomers and Rubber

Distribution Statement : APPROVED FOR PUBLIC RELEASE