Accession Number : AD0701736

Title :   DYNAMIC RESPONSE AND DAMPING BEHAVIOR OF HETEROGENEOUS POLYMERS.

Descriptive Note : Final rept. 31 May 67-30 Jun 69,

Corporate Author : AKRON UNIV OHIO INST OF POLYMER SCIENCE

Personal Author(s) : Morton,Maurice ; Tschoegl,N. W. ; Froelich,D.

Report Date : NOV 1969

Pagination or Media Count : 45

Abstract : The mechanical properties of a polystyrene - 1,4-polybutadiene-polystyrene block copolymer of molecular weight 9500/37500/ 9500 were determined at temperatures between-60 and 130 degrees C in sinusoidal shear over a frequency range from 25 to 1250 Hz, in tensile stress relazation from -70 to 70 degrees C over a time scale ranging from 1 to 1000 sec. and in tensile creep from -40 to 75 degrees C over a time scale from 10 to 10,000 sec. The dynamic mechanical properties of a 1,2-polybutadieneolystyrene block copolymer of molecular weight 160,000/ 40 were measured at ten tempertures, between -10 and 80 degrees C over a frequency range from 250 to 2500 Hz. (Author, modified) (Author, modified-PL)

Descriptors :   (*STYRENE PLASTICS, MECHANICAL PROPERTIES), SHEAR STRESSES, CREEP, TENSILE PROPERTIES, TRANSITION TEMPERATURE

Subject Categories : Plastics

Distribution Statement : APPROVED FOR PUBLIC RELEASE