Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Viscosity
Reexamination Certificate
2005-04-12
2005-04-12
Williams, Hezron (Department: 2856)
Measuring and testing
Liquid analysis or analysis of the suspension of solids in a...
Viscosity
C073S846000
Reexamination Certificate
active
06877362
ABSTRACT:
A method and a device evaluate a processability of a viscoelastic material. A measuring step and means measure a complex viscosity modulus η* and two complex elasticity moduli G*1, G*2 in respective two shear ranges with different shear speeds, by the following: varying a vibration frequency and a vibration amplitude at a given temperature range, and controlling a shear stress applied to the viscoelastic material which is mixed under a given mixing condition. The shear stress causes a reactive stress. The complex viscosity modulus η* and the two complex elasticity moduli G*1, G*2 are measured based on the reactive stress. A first operation operates an apparent activation energy Ea by the following:in-line-formulae description="In-line Formulae" end="lead"?η*=A·exp(Ea/RT)in-line-formulae description="In-line Formulae" end="tail"?whereT is temperature,R is gas constant,η* is complex viscosity modulus.A second operation operates a complex elasticity modulus change ratio G*r, a ratio between the two complex elasticity moduli G*1, G*2.
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Manaka Masakazu
Nonaka Ryoko
Fitzgerald John
Kinugawa Rubber Ind. Co. Ltd.
Williams Hezron
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