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Publication Citation: Studies on the Effect of Movement During the Cure on the Mechanical Properties of Building Joint Sealant

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Author(s): Christopher C. White;
Title: Studies on the Effect of Movement During the Cure on the Mechanical Properties of Building Joint Sealant
Published: September 09, 2010
Abstract: A novel sealant-testing device was used to continuously monitor the mechanical properties of a one part silicone sealant for movement cycles initiated from 10 h to 168 h after sample creation. These cure times fall between the proposed RILEM TC139 technical recommendation of 5 min and the ASTM C719 standard of 21 d. Apparently, enough cross-linking occurred prior to testing such that neither the overall movement history of the sample nor the deformation step shapes affected subsequent curing of the sealant. A critical parameter for sealant performance appears to be the extent of cure at the onset of movement.
Citation: Polymer Degradation and Stability
Volume: 50
Pages: pp. 113 - 119
Keywords: ASTM C719;cross-linking;cure;mechanical properties;polymer;rubber elastisity;sealant
Research Areas: Coatings/Sealants, Building and Fire Research
PDF version: PDF Document Click here to retrieve PDF version of paper (213KB)