Accession Number : AD0826321

Title :   A RESEARCH PROGRAM ON SOLID PROPELLANT PHYSICAL BEHAVIOR.

Descriptive Note : Annual rept. no. 3 (Vol. 2), 1 Feb 66-31 Jan 67,

Corporate Author : CALIFORNIA INST OF TECH PASADENA EUDORA HULL SPALDING LAB OF ENGINEERING

Personal Author(s) : Blatz, Paul J. ; Gupta, Kamal Das

Report Date : NOV 1967

Pagination or Media Count : 53

Abstract : Studies of the behavior of polymeric and composite systems concentrated on the response and failure behavior of thermoelastic rubbers. The C1 values calculated for a styrene-butadiene-styrene triblock dopolymer were negative and smaller than the C2 values. This is typical of the behavior of filled materials and it was concluded that the styrene domains in the triblock copolymer behave very much like filler particles. The thermolastic rubber, which evinced much larger break times than SBR, conformed to the Kawabata-Blatz theory. Glass bead filled samples were found to have outstanding strength properties. The capillary flow properties of molten thermolastic rubber were also measured. A limited objective analysis has been carried out of the applicability and usefulness of soft x-ray vacuum diffraction and Compton scattering to the study of polymers in general, and of filled and unfilled elastomers in particular. These two new investigative tools may be expected to throw new light on such structural features of polymers as the percentage of crosslinks, the distribution of the size of crystallites, and the concentration of loose chain ends. (Author)

Descriptors :   (*SOLID ROCKET PROPELLANTS, PHYSICAL PROPERTIES), COMPOSITE PROPELLANTS, SOLID ROCKET PROPELLANT BINDERS, BUTADIENES, STYRENE PLASTICS, RESPONSE, FAILURE(MECHANICS), SULFUR, RHEOLOGY, POLYMERS, COMPTON SCATTERING, X RAY DIFFRACTION, SOLUTIONS(MIXTURES), TURBULENCE.

Subject Categories : Solid Rocket Propellants

Distribution Statement : APPROVED FOR PUBLIC RELEASE