Accession Number : AD0460483

Title :   THE COMPRESSIBILITY OF CROSSLINKED POLYMERS.

Descriptive Note : Technical rept.,

Corporate Author : NAVAL ORDNANCE LAB WHITE OAK MD

Personal Author(s) : Warfield, Robert W.

Report Date : 18 FEB 1965

Pagination or Media Count : 19

Abstract : Bulk compressibilities of a series of crosslinked polymers have been measured at pressures up to 10,000 atmospheres and over the temperature range of 25 to 250 C. These polymers exhibited non-linear compressibility characteristics reaching a maximum compressibility of about 15% at 10,000 atmospheres and decreasing with increasing pressure. By conducting the measurements at slow speeds, data were obtained which could be expressed as glass-rubber phase diagrams. The nature of the observed compressibilities is discussed and the variation of the glass transition with pressure is analyzed on the basis of Ehrenfest thermodynamics. (Author)

Descriptors :   (*EPOXY RESINS, COMPRESSIVE PROPERTIES), (*SILICONE PLASTICS, COMPRESSIVE PROPERTIES), (*POLYESTER PLASTICS, COMPRESSIVE PROPERTIES), HIGH PRESSURE, COPOLYMERIZATION, PHASE STUDIES, TRANSITION TEMPERATURE, STYRENE PLASTICS, ACRYLIC RESINS, THERMODYNAMICS, TEMPERATURE.

Distribution Statement : APPROVED FOR PUBLIC RELEASE