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

Abstract

Polysilsesquioxanes, -(RSi(O)1.5)x(-), 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 fiber/'black glass' (SiO2/SiC/C) composites and 'black glass' fibers. Current methods of preparation depend on hydrolysis of RSiCl3 or RSi(OR)3. 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.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1989
Accession Number
ADA222620

Entities

People

  • Jeffrey A. Rahn
  • Richard M Laine
  • Zhi-fan Zhang

Organizations

  • University of Washington

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Advanced Materials
  • Body Weight
  • Carbon Fibers
  • Chemical Analysis
  • Chemistry
  • Composite Materials
  • Engineering
  • Fabrication
  • Fibers
  • High Temperature
  • Inorganic Polymers
  • Materials
  • Materials Processing
  • Materials Science
  • Physical Properties
  • Polymers
  • Silicon Carbide

Fields of Study

  • Materials science

Readers

  • Nanocomposite Materials Science
  • Polymer Science and Technology
  • Surface Coatings Technology.

Technology Areas

  • Microelectronics
  • Microelectronics - Graphene