ZHAO De-lu, FAN Qing-rong, QIAN Ren-yuan, Xiu Duan-fu. RELATIONSHIP BETWEEN THE ZERO SHEAR RATE VISCOSITIES OF PP MELT AND ITS VISCOSITY AVERAGE MOLECULAR WEIGHTS. [J]. Acta Polymerica Sinica (5):385-388(1981)
DOI:
ZHAO De-lu, FAN Qing-rong, QIAN Ren-yuan, Xiu Duan-fu. RELATIONSHIP BETWEEN THE ZERO SHEAR RATE VISCOSITIES OF PP MELT AND ITS VISCOSITY AVERAGE MOLECULAR WEIGHTS. [J]. Acta Polymerica Sinica (5):385-388(1981)DOI:
RELATIONSHIP BETWEEN THE ZERO SHEAR RATE VISCOSITIES OF PP MELT AND ITS VISCOSITY AVERAGE MOLECULAR WEIGHTS
The viscosity of PP melt in very low shear rate region was measured by the falling ball viscometer at 230℃. It is shown that the falling ball viscosity can be regarded as its zero shear rate viscosity. A relationship between the zero shear rate viscosities of PP melt and its viscosity average molecular weights was found aslog η0 = 3.72 log Mη