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Process for the preparation of polycarboranylphosphazenes. [thermal insulation
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Allcock, H. R. Scopelianos, A. G. Obran, J. P. |
| Copyright Year | 1981 |
| Description | A process for the preparation of polycarboranylphosphazenes is described. Polydihalophosphazenes are allowed to react at ambient temperatures for at least one hour with a lithium carborane in a suitable inert solvent. The remaining chlorine substituents of the carboranyl polyphosphazene are then replaced with aryloxy or alkoxy groups to enhance moisture resistance. The polymers give a high char yield when exposed to extreme heat and flame and can be used as insulation. |
| File Size | 237834 |
| Page Count | 3 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19810018733 |
| Archival Resource Key | ark:/13960/t50g8gq3p |
| Language | English |
| Publisher Date | 1981-06-30 |
| Access Restriction | Open |
| Subject Keyword | Nonmetallic Materials Polymer Chemistry Synthetic Rubbers Hygral Properties Phosphorus Polymers Thermal Insulation Carborane Phosphazene Lithium Compounds Thermal Stability Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Patent |
