Glassy-rubbery transition behavior of epoxy resins used in FRP structural strengthening systems

Anurag Jaipuriar, Jeffrey P. Flood, Charles E. Bakis, Maria M. Lopez, Xiongjun He

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The glass transition behavior of five different epoxies, commercially available as primers and saturants for FRP strengthening systems, have been investigated using dynamic mechanical analysis. Glass transition temperatures, Tg, were assigned using three methods: storage modulus onset, loss modulus peak, and tan δ peak. Based on the Tg values, a comparison of the five epoxies as well as the three different methods of T g assignment were made. It was observed that post-curing during the DMA test procedure can have a dramatic effect on the glass transition behavior, with Tg values increasing up to 22° C on two short exposures to the maximum test temperature. For a given product, the difference in T g values as a function of test method ranged from 12°C to 42°C on the first thermal cycle. Two Tg values were observed for one of the products, indicating the presence of secondary polymer as a blend or copolymer. Epoxy polymers used as saturants showed a higher transition temperature than those used as primers and adhesives.

Original languageEnglish (US)
Title of host publicationAdvances in FRP Composites in Civil Engineering - Proceedings of the 5th International Conference on FRP Composites in Civil Engineering, CICE 2010
PublisherSpringer Berlin Heidelberg
Pages397-400
Number of pages4
ISBN (Print)9783642174865
DOIs
StatePublished - Jan 1 2011
Event5th International Conference on FRP Composites in Civil Engineering, CICE 2010 - Beijing, China
Duration: Sep 27 2010Sep 29 2010

Publication series

NameAdvances in FRP Composites in Civil Engineering - Proceedings of the 5th International Conference on FRP Composites in Civil Engineering, CICE 2010

Other

Other5th International Conference on FRP Composites in Civil Engineering, CICE 2010
CountryChina
CityBeijing
Period9/27/109/29/10

All Science Journal Classification (ASJC) codes

  • Surfaces and Interfaces

Fingerprint Dive into the research topics of 'Glassy-rubbery transition behavior of epoxy resins used in FRP structural strengthening systems'. Together they form a unique fingerprint.

  • Cite this

    Jaipuriar, A., Flood, J. P., Bakis, C. E., Lopez, M. M., & He, X. (2011). Glassy-rubbery transition behavior of epoxy resins used in FRP structural strengthening systems. In Advances in FRP Composites in Civil Engineering - Proceedings of the 5th International Conference on FRP Composites in Civil Engineering, CICE 2010 (pp. 397-400). (Advances in FRP Composites in Civil Engineering - Proceedings of the 5th International Conference on FRP Composites in Civil Engineering, CICE 2010). Springer Berlin Heidelberg. https://doi.org/10.1007/978-3-642-17487-2_86