Boron-Nitrogen Polymers.
Abstract
The objective was to develop processible preceramic polymers amenable to transformation into pure boron nitride for potential applications as fibers and coatings. A series of alkyl, aryl, and trimethylsilyl-substituted borazines was synthesized and subjected to pyrolysis to determine the type of substituent leading to an optimum preceramic polymer. The feasibility of the process was established. From trimethylsilyl-substituted precursors, following stepwise pyrolysis, fibers were drawn and cured in an ammonia atmosphere giving pure boron nitride. Mechanisms responsible for borazine condensations were elucidated; processes involved in precursor synthesis were investigated.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1985
- Accession Number
- ADA158658
Entities
People
- D. H. Harris
- K. L. Paciorek
- M. E. Smythe
- P. F. Kimble
- R. H. Kratzer