A pulse rheometer for reacting foams

A foam rheometer has been developed based on the impulse theory of linear viscoelasticity. The rheometer is a large‐volume parallel‐plate device which operates under gap‐loaded conditions, and is designed as an add‐on fixture for the Materials Testing System Model 312. The rheometer provides charact...

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Bibliographic Details
Published in:Polymer engineering and science 1992-03, Vol.32 (6), p.426-430
Main Authors: Carriere, Craig J., Bank, David H., Christenson, Christopher P.
Format: Article
Language:English
Subjects:
Applied sciences
Cellular
Exact sciences and technology
Forms of application and semi-finished materials
Polymer industry, paints, wood
Technology of polymers
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Summary:A foam rheometer has been developed based on the impulse theory of linear viscoelasticity. The rheometer is a large‐volume parallel‐plate device which operates under gap‐loaded conditions, and is designed as an add‐on fixture for the Materials Testing System Model 312. The rheometer provides characterization data of the pre‐gel (via the zero‐shear viscosity) or the post‐gel (via the equilibrium modulus) properties of a foaming cellular polymer with a precision of better than ± 15%.
ISSN:0032-3888
1548-2634
DOI:10.1002/pen.760320607