Use of high-temperature, high-torque rheometry to study ...
2007-8-27 · When coal is heated in the absence of oxygen it softens at approximately 400 ° C, becomes viscoelastic, and volatiles are driven off. With further heating, the viscous mass reaches a minimum viscosity in the range of 10 3 – 10 5 Pa s and then begins to resolidify. A high-torque, high-temperature, controlled-strain rheometer with parallel plates has been used to study the rheology during ...
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