PARTICLE SIZE MEASUREMENT AND THE EFFECT OF PARTICLE SIZE ON THE BURNING TIME OF CHEMICAL DELAY COMPOSITIONS
NAVAL ORDNANCE LAB WHITE OAK MD
Pagination or Media Count:
Methods of particle size measurement of fueloxidant systems were reviewed. A perusual of the results indicates that, among the methods considered for particle size analysis, the turbidimetric liquid sedimentation method as exemplified by the Eagle-Picher Turbimeter appears to most nearly conform to the acceptable criteria discussed throughout the report. The precision and reliability seem to be adequate. Also, the simple technique involved and the time necessary to complete an analysis make the Turbimeter readily adaptable to production situations. Although finely divided metals were the only powders analyzed on the Turbimeter during this study, the instrument is adaptable to a wide variety of particulate materials, including both organics and inorganics. There are certain materials which are not adaptable to this method. These are very low specific gravity materials as flour, extremely fine, dark colored pigments such as Prussian Blue, and materials with no particles above 0.5 micron radius.
- Combustion and Ignition
- Physical Chemistry