Avtor/Urednik		Kralj, Aleš; Prodan, Ted; Emri, Igor
Naslov		An apparatus for measuring the effect of pressure on the time-dependent properties of polymers
Tip		članek
Vir		J Rheol
Vol. in št.		Letnik 45, št. 4
Leto izdaje		2001
Obseg		str. 929-43
Jezik		eng
Abstrakt		We improved and upgraded the apparatus that Fillers, Moonan, and Tschoegl used several years ago to investigate the influence of pressure and temperature on the mechanical properties of time dependent polymeric materials. The new apparatus can measure the volume and the shear relaxation module of solid polymer specimens, subjected to a combination of temperatures from -60°C to + 110°C, and pressures from atmospheric to 360 MPa. The paper demonstrates the capabilities of the new apparatus from the scientific as well as engineering stand point. Shear relaxation measurements on poly(vinyl acetate) (PVAc), natural rubber (NR), styrene-butadiene rubber (SBR), and ethylene-propylene-diene-monomer rubber (EPDM) are also presented. For PVAc we present also bulk creep compliance, coefficient of thermal expansion and the bulk modulus.
Deskriptorji		POLYMERS MATERIALS TESTING