✦ LIBER ✦

Viscoelastic properties of a pitch and coke-pitch disperse system

✍ Scribed by Mototsugu Sakai

Publisher: Elsevier Science
Year: 1979
Tongue: English
Weight: 603 KB
Volume: 17
Category: Article
ISSN: 0008-6223
DOI: 10.1016/0008-6223(79)90021-6

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✦ Synopsis

V~sc~~astic properties of a pitch and a coke-pitch disperse system were studied by using a Weissenberg rheogoniometer and a simple compressive creep apparatus. Dynamic modulus and steady shear viscosity of the pitch, and creep compliance of the disperse system were determined. The pitch examined was found to be a Ne~onian non-elastic fluid over a wide range of experimental conditions. whereas the coke-pitch disperse system showed a transition from non-elastic to viscoelastic fluid at about 50 wt% of coke content. It has also been shown that the time-temperature superposition principle is applicable to the disperse system. the temperature dependence of the shift factor being independent of coke content.

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