Evaluation of cure shrinkage measurement techniques for thermosetting resins

Shah, Darshil U. and Schubel, Peter J. (2010) Evaluation of cure shrinkage measurement techniques for thermosetting resins. Polymer Testing, 29 (6). pp. 629-639. ISSN 0142-9418

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Abstract

Resin chemical shrinkage dictates the surface integrity and the roughness of a composite structure. Thus, to minimize surface failures and to produce a good surface quality it is a requisite to be able to measure and track resin shrinkage during the cure process. This manuscript investigates and evaluates the measuring and monitoring of real-time resin shrinkage using a rheometer, a helium-based pycnometer and a thermo-mechanical analyzer (TMA) for ambient curing UP and epoxy resins. Shrinkage readings obtained from the newly developed robust technique with the rheometer concur well with readings from the traditional pycnometric method. They also coincide within the accepted literature values of 7–10% and 3.5–4.5% for the UP and epoxy systems, respectively. Shrinkage measurements during post-cure were effectively carried out at an elevated temperature, suggesting that the methodology provided can be applied to non-ambient curing systems. The TMA was found to be unsuccessful in measuring shrinkage reliably.

Item Type: Article
Additional Information: NOTICE: this is the author’s version of a work that was accepted for publication in Polymer Testing. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Polymer Testing, 29(6), 2010, doi: 10.1016/j.polymertesting.2010.05.001
Schools/Departments: University of Nottingham UK Campus > Faculty of Engineering > Department of Mechanical, Materials and Manufacturing Engineering
Identification Number: https://doi.org/10.1016/j.polymertesting.2010.05.001
Depositing User: Shah, Mr Darshil U
Date Deposited: 14 Jun 2013 14:34
Last Modified: 13 Sep 2016 21:26
URI: http://eprints.nottingham.ac.uk/id/eprint/2002

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