Cross-Linked Thermoplastic Blends of Polyethylene with an Elastomer 3. Rheological Charcteristics of Melts

Results of an experimental investigation into the changes of viscosity and the flow character of binary blends of high-density polyethylene with an elastomer (ethylene-propylene-dicyclopentadiene terpolymer) during the γ-radiation and chemical cross-linking are reported. The type of functions of the effective viscosity of temperature (activation energy of flow) and shear rate (flow-behavior index) in relation to the structure of melts of the blends is discussed for a wide range of component ratios and various extents of cross-linking. __________ Translated from Mekhanika Kompozitnykh Materialov, Vol. 41, No. 6, pp. 819–830, November–December, 2005.