Polymer melt and elastomer extension fixture

Details Polymer melt and elastomer extension fixture Polymer melt and elastomer extension fixture

2006-08-29

2006-08-29

Cygan, Michael (Department: 2855)

Measuring and testing

Sheet, woven fabric or fiber

Filament

C073S826000, C073S829000

Reexamination Certificate

active

07096728

ABSTRACT:
A system for making extensional measurements on a sample includes an armature, a motor drive shaft, a moveable cylinder, and a fixed cylinder. The motor drive shaft is attached to the armature. The moveable cylinder is mounted on the armature. The sample is stretched between the moveable cylinder and fixed cylinder by the rotation of the moveable cylinder around the axis of the fixed cylinder and rotation of the moveable cylinder about its own axis. The resistance of the sample produces a torque on the moveable cylinder and the fixed cylinder. The torque is measured on the moveable cylinder or on a transducer shaft attached to the fixed cylinder. The system is adaptable to a commercial rotational rheometer.

REFERENCES:
patent: 2666324 (1954-01-01), Stott
patent: 3664182 (1972-05-01), Butler
patent: 6578413 (2003-06-01), Sentmanat
patent: 6691569 (2004-02-01), Sentmanat
Bames et al. “Controlled-Stress Rotational Rheometry: An Historical Review”, Korea-Australia Rheology Jornal, vol. 15, No. 4, pp. 187-196 (2003).
Meissner, J. “Development of a Universal Extensional Rhoemeter for the Uniaxial Extension of Polymer Melts” Transactions of the Society of Rheology, vol. 16:3 pp. 405-420 (1972).
Meissner et al. “A New Elongational Rheometer for Polymer Melts and Other Highly Viscoelastic Liquids” Rheological Acta 33:1-21 (1994).
Padmanabhan et al. “Transient Extensional Viscosity from a Rotational Shear Rheometer Using Fiber-Windup Technique”, Journal Rheology 40, pp. 473-481 (1996).

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