Accession Number:

AD0685635

Title:

HYPOTHESIS OF SILOXANE DEGRADATION OF HIGH TEMPERATURE AND THE EFFECT OF CERIUM-BASED INHIBITOR,

Descriptive Note:

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON D C

Personal Author(s):

Report Date:

1969-03-13

Pagination or Media Count:

14.0

Abstract:

The cerium-based inhibitor for extending gelation times of commercial silicones is considered from the standpoint of the relatively fixed proportions of reactants necessary for optimum stabilization. A connection is made between these fixed proportions and the hydridesilanol content of the commercial silicone itself. The release of H2O by the high-temperature condensation of silanol groups does not lead to the simple evolution of H2O vapor but rather to a rapid catalytic attack by H2O on the siloxane chain. The beneficial effects of the cerium inhibitor can be rationalized in terms of eliminating the source of high-temperature H2O evolution. Author

Subject Categories:

  • Polymer Chemistry
  • Lubricants and Hydraulic Fluids

Distribution Statement:

APPROVED FOR PUBLIC RELEASE