Accession Number:

ADA003531

Title:

The Preparation and Properties of D2-Meta-Carborane-Siloxane Elastomers.

Descriptive Note:

Technical rept.,

Corporate Author:

UNION CARBIDE CORP TARRYTOWN N Y CORPORATE RESEARCH LAB

Report Date:

1974-07-17

Pagination or Media Count:

20.0

Abstract:

D2-meta-carborane-siloxane elastomers have been reputed to have outstanding thermal properties. The report briefly discusses new approaches to the synthesis of D2-carborane-siloxanes which overcome many of the disadvantages of previous synthetic methods. Thus, linear gum stocks with Tgs of -40 to -25C and molecular weights up to 250,000 have been prepared. Compounded and cured samples exhibit a linear modulus plateau between approximately -20C and 300C, and outstanding maintenance of mechanical properties after heat aging in air at 315C for 300 hours. The property profile and vulcanization chemistry of the D2-carborane-siloxane system suggest utility in high performance sealant, gasket, 0-ring and coating applications.

Subject Categories:

  • Organic Chemistry
  • Elastomers and Rubber

Distribution Statement:

APPROVED FOR PUBLIC RELEASE