Effects of Elevated Temperature Curing on Glass Transition Temperature of Steel/CFRP Joint and Pure Epoxy Adhesive

E.R.K.  Chandrathilaka; J.C.P.H.  Gamage; S. Fawzia

doi:10.56748/ejse.182582

Effects of Elevated Temperature Curing on Glass Transition Temperature of Steel/CFRP Joint and Pure Epoxy Adhesive

Authors

E.R.K. Chandrathilaka University of Moratuwa
J.C.P.H. Gamage University of Moratuwa
S. Fawzia Queensland University of Technology

DOI:

https://doi.org/10.56748/ejse.182582

Keywords:

Elevated temperature curing, Glass transition temperature, CFRP/steel joints, Epoxy adhesive, Service performance

Abstract

Glass transition temperature (Tg) of the steel/epoxy/CFRP composite bond can affect the service and fire performance of the system. Two test series were conducted to evaluate the Tg of the pure epoxy adhesive and the steel/epoxy/CFRP bond. A total of twenty-six double strap joints and pure epoxy adhesive samples were prepared under different curing conditions to check the Tg of bond. Six different curing conditions were used. The test results revealed that the elevated temperature curing has a significant affect on the Tg of steel/epoxy/CFRP bond and pure epoxy adhesive. A considerable improvement of Tg was noted in the joint with elevated temperature curing when compare with the epoxy adhesive samples cured under the same
condition. The strength degradation of the bond for a certain temperature exposure is also reduced with increased Tg of the joint.

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Published

2018-06-01

How to Cite

Chandrathilaka, E. ., Gamage, J. . and S. Fawzia (2018) “Effects of Elevated Temperature Curing on Glass Transition Temperature of Steel/CFRP Joint and Pure Epoxy Adhesive”, Electronic Journal of Structural Engineering, 18(2), pp. 1–6. doi: 10.56748/ejse.182582.