Naslov
The influence of shear rate and temperature on flow properties of polymeric melts

Autori
Stojšić, Josip ; Szűcs, András ; Raos, Pero ; Somolanji, Marija

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of CIM 2011 Computer Integrated Manufacturing and High Speed Machining / Abele, Eberhard ; Udiljak, Toma ; Ciglar, Damir - Zagreb : Hrvatska udruga proizvodnog strojarstva (HUPS), 2011, 241-244

ISBN
978-953-7689-01-8

Skup
13th International Scientific Conference on Production Engineering

Mjesto i datum
Biograd na Moru, Hrvatska, 16.06.2011. - 18.06.2011

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
viscosity; shear flow; flow curves; low density polyethylene

Sažetak
A flow of polymeric substances and materials is extremely complex mechanism in the manufacturing processes. Polymer melt viscosity, as one of the main flow characteristic, is very high (for five to eight order values greater than of water) at normal manufacturing temperatures. Polymer melt viscosity is highly dependent on shear rate, and from other influences the most significant is temperature. Temperature has a very strong influence on polymer melt viscosity because when increasing the temperature mobility of macromolecular chains significantly increases as well and by that the viscosity decreases. The paper theoretically describes rheological polymer melt properties and experimentally confirms the influence of temperature on low density polyethylene (PE-LD) melt flow curves.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

POVEZANOST RADA