ISSN:
1573-4803
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract In this study, the restructuring behavior of particle networks in highly-concentrated zirconia-wax suspensions as model suspensions is investigated in terms of temperature and solids concentration. The restructuring kinetics is analytically determined such that it can be formulated by a linear correlation between the relative viscosity (ηr) of the suspensions and the logarithmic time (t) of isothermal annealing. Upon restructuring, a gelling point t gel, defined as the time period of which the discrete particle networks in the pre-sheared suspensions are observed to start to form a continuous structure. Above t gel, a sharp increase in suspension viscosity is commonly observed. The t gel varies as a function of both temperature and solids concentration, The temperature effect provides valuable information for a better understanding of the restructuring behavior from an energy viewpoint. The influence of solids concentration, i.e., the t gel decreased linearly with increasing solid concentration, suggests a stronger interparticle attraction that further accelerates flocculation.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1004894021478
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