Accession Number:

AD0632035

Title:

SIB POLYMER DEVELOPMENT.

Descriptive Note:

Final rept. 1 Feb 65-31 Jan 66,

Corporate Author:

OLIN MATHIESON CHEMICAL CORP NEW HAVEN CONN CHEMICALS DIV

Personal Author(s):

Report Date:

1966-02-28

Pagination or Media Count:

61.0

Abstract:

Selected members of the SiB polymer family were developed for high temperature applicable elastomers. Three measurements, namely tensile strength, elongation, and hardness, were performed from -80F to 800F other characteristics were obtained on specific specimens. With the proper selection and concentration of reinforcing fillers and antioxidants ferric or tungsten oxide are indispensable, vulcanizates of SiB-2 and SiB-4 rubber exhibit outstanding heat-aging resistance. They show a tensile strength of 400-450 psi. and an elongation of 100-150 at ambient temperature, and withstand temperatures of 800 to 900F in air, demonstrating a useful life of 24 hours and 2 hours, respectively. They were still flexible at -40 to -80F, indicating a wide range of elasticity. Limited experimentation indicated their immunity to humidity and water immersion. The solvent resistance was improved by introduction of a minute number of chloromethyl groups. Dielectric constants approached those of the silicones. Since the uncured SiB elastomers can be molded or extruded, special applications such as wire coating, gasket and O-ring fabrication can be envisioned.

Subject Categories:

  • Polymer Chemistry
  • Elastomers and Rubber

Distribution Statement:

APPROVED FOR PUBLIC RELEASE