FUNDAMENTAL STUDIES OF THE DISPERSIBILITY OF POWDERED MATERIALS

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Abstract:

This is a fundamental study of factors affecting the flow and dispensability of finely divided organic powders. Most of the investigations pertain to three base powders saccharin, Carbowax 6000, and Span 60. These powders were chosen to represent crystalline, waxy, and gummy types of powders, respectively. Late in the program, a fourth powder egg albumin was added to the list of powders to be investigated. The preparation of powders including grinding, deagglomeration, blending, coating with surface active agents, etc. is discussed. The various tests for measuring physical properties of powders including particle size distribution, shear strength, bulk tensile strength, bulk density, dynamic angle of repose, dispensability, and electrostatic charge are de scribed. The major studies are 1 bulk tensile strength tests, 2 effects of humidity on powder properties, 3 effects of antiagglomerant agents on powder properties, 4 mechanism by which Cab O-Sil functions, 5 effects of surface active agents on powder properties, 6 effects of ad sorbed foreign vapors on powder properties, 7 effects of removal of adsorbed gases and vapors, 8 energy required to disperse a powder sample, 9 properties of compacted powders, and 10 egg albumin studies.

Author(s):
Nash, J. H. ; Leiter, G. G. ; Johnson, A. P. ; Stender, D. ; Zeller, H. W.
Author Organization(s):
GENERAL MILLS INC MINNEAPOLIS MN
Descriptive Note:
Final rept. 3 June 1960-31 June 1963
Annotation:
Fundamental studies of the dispersibility of powdered materials.
Pagination:
0255

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release, Document Partially Illegible
Distribution Statement:
Availability: Document Partially Illegible.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
REPT-2381
Contract/Grant Number(s):
DA-18-108-405-CML-824
Project Number(s):
81524
Monitor Series:
DA
 Subject Terms
Joint Capability Areas:
JCA_5_Command and Control; JCA_5.3_Planning; JCA_6.1.3_Switching and Routing; JCA_3.2_Engagement; JCA_3_Force Application; JCA_6.1.1_Wired Transmission; JCA_1.2.5_Lessons Learned; JCA_3.2.1_Kinetic Means; JCA_6.1_Information Transport; JCA_6_Net Centric; JCA_1.2.7_Experimentation; JCA_1_Force Support; JCA_4.1_Deployment and Distribution; JCA_4.4.1_Food Service; JCA_4.4_Logistics Services; JCA_4.2.3_Manage Global Supplier Networks; JCA_4.2_Supply
Modernization Areas:
Microelectronics
Communities of Interest:
Energy and Power Technologies
Descriptor(s):
*POWDERS, *ORGANIC MATERIALS, DENSITY, PARTICLE SIZE, LIQUIDS, ADSORPTION, TENSILE PROPERTIES, THEORY, TEST METHODS, CRYSTALS, GASES, COATINGS, STRAIN GAGES, EQUATIONS, EGGS, ELECTROSTATICS, HUMIDITY, SEDIMENTATION, ALBUMINS, WAXES, GRINDERS
Field(s)/Group(s):
Miscellaneous Materials, Test Facilities, Equipment and Methods
Keyword(s):
BULK DENSITY
Report Date:
1963 Mar 15