Loading...
Please wait, while we are loading the content...
Similar Documents
Heat sterilizable solid-propellant development
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Kalfayan, S. H. |
| Copyright Year | 1981 |
| Description | The binders tested were polyurethanes made from two hydroxy-terminated polybutadienes, R-45 and Butarez HT, one hydroxy-terminated butadiene-acrylonitrile copolymer, Hycar 1300X 17, and a hydroxy-terminated prepolymer, Esterdiol 560, made from the dimerized fatty acid Empol 1010. The isocyanates used most extensively were isophorone diisocyanate (IPDI) and a polymeric diisocyanate, DDI. Stress relaxation was used to examine the chemical changes that took place in the binder when subjected to the sterilization temperatures. The thermal stability of the oxidizer, ammonium perchlorate (AP), was tested by thermogravimetry in the isothermal and nonisothermal modes. The effect of particle size, recrystallization, moisture content, and doping on the heat stability of AP could be evaluated by this method. The volatile degradation products, obtained when AP samples were aged at 135 C for prolonged periods, were analyzed by mass spectroscopy. |
| File Size | 3238388 |
| Page Count | 73 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19810014767 |
| Archival Resource Key | ark:/13960/t1tf4mp2w |
| Language | English |
| Publisher Date | 1981-04-15 |
| Access Restriction | Open |
| Subject Keyword | Propellants And Fuels Propellant Tests Stress Relaxation Propellant Binders Solid Propellants Mass Spectroscopy Thermal Stability Oxidizers Thermal Degradation Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
