Nuclear Magnetic Resonance Imaging of Solid Rocket Propellants at 14.1 T

✍ Scribed by W.E. Maas; L.H. Merwin; D.G. Cory

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 339 KB
• Volume: 129
• Category: Article
• ISSN: 1090-7807
• DOI: 10.1006/jmre.1997.1253

✦ Synopsis

Proton NMR images of solid propellant materials, consisting of particle distribution and voids, it is insufficient to study dea polybutadiene binder material filled with 82% solid particles, tails such as the spatial distribution of small (õ35 mm) have been obtained at a magnetic field strength of 14.1 T and at particles and small-scale intensity fluctuations.

a resolution of 8.5 1 8.5 mm. The images are the first of elastomeric A difficulty in increasing the image resolution is that this materials obtained at a proton frequency of 600 MHz and have naturally decreases the volume of the voxel and hence the the highest spatial resolution yet reported. The images display a number of spins per voxel. All else being equal this would high contrast and are rich in information content. They reveal the lead to a decrease in the signal-to-noise ratio of the image.

distribution of individual filler particles in the polymer matrix as

This loss can be overcome by performing the imaging experwell as a thin polymer film of about 10-30 mm which is found to iments at a higher magnetic field strength since the sensitivsurround some of the larger filler particles.