Oxidation-resistant thermosets derived from thermal copolymerization of acetylenic monomers containing boron and silicon
✍ Scribed by Daniel Bucca; Teddy M. Keller
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 102 KB
- Volume
- 37
- Category
- Article
- ISSN
- 0887-624X
No coin nor oath required. For personal study only.
✦ Synopsis
Polymerization of acetylenic monomers containing silicon and boron produces materials that are resistant to oxidation at elevated temperature. In addition to homopolymerization, these inorganic-organic hybrid monomers can be copolymerized with an otherwise all carbon containing system. Inorganic elements incorporated by this method enhance the thermooxidative stability of the copolymer. This stability is a function of the amount of boron in the final product. We show that a thermoset containing an initial 5% by weight of boron can be charred to a material that when heated in air at 1000 °C loses less than 10% of its mass.