
The Effect of Additives on Vibration Damping in Polyvinyl Chloride and Acrylic Formulations
The abilities of various additives to impact the vibration damping properties of polyvinyl chloride (PVC) and acrylics were investigated. A material must have good viscoelastic properties in order for it to be an effective vibration damper. However, it is evident that not all viscoelastic
materials are good vibration dampers. Consider flexible (plasticized) PVC, for example. PVC formulations demonstrating the same glass transition temperature may have widely different damping capabilities. This presentation will show that the type of additive influences, and in some cases dictates,
the damping ability of the final polymer composite. Initially, formulations containing various additives were screened via dynamic mechanical thermal analysis (DMTA) to determine which ones would likely have good damping properties. Formulations which exhibited promising results via DMTA were
then tested via an Oberst bar damping test (SAE J1637). Final observations showed that specific additives do promote vibration damping in PVC and acrylic systems. End use applications for this technology could include spray-applied coatings, sheet stock, and pad materials. This presentation
will include test results (DMTA and Oberst bar), discussion of correlations between the test results, and some conclusions.
Document Type: Research Article
Affiliations: Eastman Chemical Company
Publication date: 10 November 2017
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