Читать книгу The Rheology Handbook - Thomas Mezger - Страница 118

and simplified:

Viscosity curve model function with Cross constant c [s] and Cross exponent p (of 1965 [3.43]). For the simplified version “Cross 0”, it is assumed that η∞ is very low in contrast to η0 and can therefore be ignored. This is usually the case for all concentrated polymer solutions and melts, since here, the viscosity values usually decrease at least by two decades.