New thermo‐oxidative protective coating for carbon/carbon composites in mid‐temperature range using a combination of nano‐filler and macro‐filler with polybenzoxazine as a carbon‐forming matrix
Abstract
A novel main‐chain type, oligomeric benzoxazine has been synthesized as a highly thermo‐oxidative matrix material. The structure of the monomer is confirmed by 1H nuclear magnetic resonance spectroscopy and size exclusion chromatography. Octasilane polyhedral oligomeric silsesquioxane (OctaSilane POSS) and glass sphere are incorporated to form an effective oxidation‐protective coating for the carbon/carbon composites. The composition has been optimized by varying benzoxazine and OctaSilane POSS ratio with the aid of thermogravimetric analyses. The even distribution of the three components has been confirmed by laser Raman image, and the effectiveness of the coating has been investigated using isothermal weight loss measurement at 700°C in air for 1300 h. POLYM. COMPOS., © 2011 Society of Plastics Engineers.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jul 11, 2011
- Source ID
- 10.1002/pc.21135
Entities
People
- Hatsuo Ishida
- Lin Jin
Organizations
- Air Force Office of Scientific Research