Accession Number:

ADA222620

Title:

The Catalytic Synthesis of Inorganic Polymers for High Temperature Applications and as Ceramic Precursors

Descriptive Note:

Corporate Author:

WASHINGTON UNIV SEATTLE DEPT OF MATERIALS SCIENCE AND ENGINEERING

Report Date:

1989-12-01

Pagination or Media Count:

10.0

Abstract:

Polysilsesquioxanes, -RSiO1.5x-, exhibit many properties that are potentially quite useful for industrial applications. These properties include high temperature stability approx. 600 deg C in Oxygen good adhesion and, liquid crystal-like behavior for some derivatives. Moreover, polymethylsilsesquioxane has been used successfully as a precursor for the fabrication of carbon fiberblack glass SiO2SiCC composites and black glass fibers. Current methods of preparation depend on hydrolysis of RSiCl3 or RSiOR3. Unfortunately, this approach leads to several products that are difficult to purify because polysilsesquioxanes exhibit a great propensity for forming gels. Keywords Polymers, Ceramic materials, Copolymers, Catalysis, Synthesis, Polysiloxane, Silicon, Oxygen.

Subject Categories:

  • Polymer Chemistry
  • Ceramics, Refractories and Glass

Distribution Statement:

APPROVED FOR PUBLIC RELEASE