Accession Number : AD0708862

Title :   A LOW-TEMPERATURE DIFFERENTIAL THERMAL ANALYSIS OF HYDROXY-TERMINATED AND CARBOXY-TERMINATED POLYBUTADIENE.

Descriptive Note : Special rept.,

Corporate Author : COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H

Personal Author(s) : Tice,A. ; Bartizek,B. ; Anderson,D. M.

Report Date : JUN 1970

Pagination or Media Count : 14

Abstract : A low-temperature differential thermal analysis of hydroxy- and carboxy-terminated polybutadiene was performed with varying amounts of n-butylferrocene. No distinct phase changes were observed to indicate that the sample components became separated during cooling. However, the slow transformation into the glassy state was observed, yielded glass transition temperatures of -80 to -95C. This is far below the low temperature specification for these propellants. This analysis yielded no evidence of a physical or chemical transition that might cause a low-temperature firing failure in the finished propellants. (Author)

Descriptors :   (*SOLID ROCKET PROPELLANTS, DIFFERENTIAL THERMAL ANALYSIS), (*POLYMERS, *DIFFERENTIAL THERMAL ANALYSIS), BUTADIENES, FERROCENES, TRANSITION TEMPERATURE

Subject Categories : Physical Chemistry
      Solid Rocket Propellants

Distribution Statement : APPROVED FOR PUBLIC RELEASE