Thermal, viscoelastic, and mechanical properties of DCPD-containing polymers

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• 作者：Marta Worzakowska (1) marta.worzakowska@poczta.umcs.lublin.pl
• 关键词：Dicyclopentadiene – Polyesters – Thermal properties – Mechanical properties
• 刊名：Journal of Thermal Analysis and Calorimetry
• 出版年：2012
• 出版时间：May 2012
• 年：2012
• 卷：108
• 期：2
• 页码：461-466
• 全文大小：286.1 KB
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• 作者单位：1. Department of Polymer Chemistry, Faculty of Chemistry, Maria Curie-Sklodowska University, Gliniana 33 Str., 20-614 Lublin, Poland
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Sciences
  Polymer Sciences
  Physical Chemistry
  Inorganic Chemistry
  Measurement Science and Instrumentation
  
• 出版者：Akad茅miai Kiad贸, co-published with Springer Science+Business Media B.V., Formerly Kluwer Academic
• ISSN：1572-8943

文摘

The thermal, viscoelastic, and mechanical properties of cured dicyclopentadiene (DCPD)-containing polymers prepared from novel DCPD-modified unsaturated epoxypolyesters and styrene were evaluated. This was accomplished using thermogravimetric analysis, differential scanning calorimetry, dynamic mechanical analysis, three-point bending test, and Brinell’s hardness. The thermal, viscoelastic, and mechanical properties of DCPD-containing polymers were strongly dependent on chemical structure. The cross-linking density (υ _e) of obtained networks increased with increasing content of carbon–carbon double bonds in the poly(ester) structure. In addition, the introduction of DCPD rings into the poly(ester) structure increased the rigidity of the molecular backbone. It resulted in obtaining polymers which showed great improvement in mechanical properties including remarkably higher storage modulus ( E_{20 °\textC}￠ E_{{20\,{}^{\circ}{\text{C}}}}^{'} ), flexural modulus at bending (E _mod), hardness, lower extension at maximum force (ε-F _max), as well as higher thermal stability. These good properties make these materials highly promising as potential candidates for structural applications.