Basic Solutions to Carbon/Carbon Oxidation: Science and Technology

Abstract

The attached report addresses the first year of a program aimed at developing basic solutions to carbon/carbon composite oxidation. In particular, one primary thrust is the development of boron containing carbons through pyrolysis of boron containing polymers. Additionally, a basic understanding of the oxidation mechanisms in carbons and boron containing carbons is being sought. Several new boron containing precursors have been synthesized, which can be converted to B/C materials after pyrolysis. In particular, polyacrylonitrile (PAN) has been copolymerized with a boron-containing monomer (vinylcatecholborane.) Approximately 68% of the original boron is retained after pyrolysis yielding a product with 3.4% boron. 1,4-polybutadiene (PBD) has been hydroborated to contain large amounts of boron. Model compounds have been used to prepare polydiyne with considerable amounts of boron. In the latter two cases, direct analysis for % boron is not yet available. Preliminary TGA data suggests that PBD containing boron results in a more stable structure.

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Document Details

Document Type
Technical Report
Publication Date
May 13, 1994
Accession Number
ADA280447

Entities

People

  • Carlo Pantano
  • Ljubisa Radovic
  • Peter A. Thrower
  • T-c. Chung
  • Tan R. Harrison

Organizations

  • Pennsylvania State University

Tags

Communities of Interest

  • Advanced Electronics
  • C4I
  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Alkenes
  • Alkynes
  • Carbon Fibers
  • Chemical Reaction Properties
  • Chemical Synthesis
  • Chemical Vapor Deposition
  • Chemistry
  • Electrons
  • Equations
  • Fiber Spinning
  • Fibers
  • Films
  • Graphitic Materials
  • Materials
  • Materials Processing
  • Materials Science
  • Organic Chemistry

Fields of Study

  • Chemistry

Readers

  • Combustion science or combustion engineering.
  • Polymer Science and Technology
  • Systems Analysis and Design