Process to obtain dynamic shear modulus components of a polymer by using steady-state-flow data
AssigneePhillips Petroleum Company
InventorJay Janzen
Life of this patent
Estimating the term…
Abstract
A process to obtain the shear storage modulus G'(.omega.) and/or the shear loss modulus G"(.omega.) of a polymer is provided. This process comprises: (a) producing a viscosity data set by measuring the viscosity of said polymer at various shear rates, while said polymer is in a melted state; (b) producing a parameter data set that comprises values for .eta..sub.0, .tau..sub..eta. and .alpha. by analyzing said viscosity data set; and (c) obtaining said shear storage modulus G'(.omega.) and the shear loss modulus G"(.omega.) by using said parameter data set.
Claims15
A process to obtain the shear storage modulus G'(.omega.) of a polymer said process comprising:
- (a) producing a viscosity data set by measuring the viscosity of said polymer at various shear rates, while said polymer is in a melted condition;
- (b) producing a parameter data set that comprises values for .eta..sub.0, .tau..sub..eta., and .alpha., by analyzing said viscosity data set;
- and
- (c) obtaining said shear storage modulus G'(.omega.) by using said parameter data set.
A process to obtain the shear loss modulus G"(.omega.) of a polymer said process comprising:
- (a) producing a viscosity data set by measuring the viscosity of said polymer at various shear rates, while said polymer is in a melted condition;
- (b) producing a parameter data set that comprises values for .eta..sub.0, .tau..sub..eta. and .alpha. by analyzing said viscosity data set;
- (c) obtaining said shear loss modulus G"(.omega.) by using said parameter data set.
A process to obtain the shear storage modulus G'(.omega.) and the shear loss modulus G"(.omega.) of a polymer said process comprising:
- (a) producing a viscosity data set by measuring the viscosity of said polymer at various shear rates, while said polymer is in a melted condition;
- (b) producing a parameter data set that comprises values for .eta..sub.0, .tau..sub..eta. and .alpha. by analyzing said viscosity data set;
- and
- (c) obtaining said shear storage modulus G'(.omega.) and the shear loss modulus G"(.omega.) by using said parameter data set.
Dependencies are inferred from the claim text.