• JUHI KUSHWAHA

Articles written in Bulletin of Materials Science

• Studies on thermal stability and life estimation of epoxy adhesive by thermogravimetric analysis for high-temperature applications

Structural epoxy adhesive was investigated for its thermal stability and degradation behaviour in a thermooxidative environment by thermogravimetry analysis (TGA). Non-isothermal TGA was performed at temperatures between30 and 600$^{\circ}$C utilizing different heating rates. The ageing characteristics of material were determined by an accelerated ageing study using isothermal TGA at different temperatures for 5% threshold conversion. The activation energies from both non-isothermal TGA and isothermal TGA were estimated and the activation energy values for 5% degradation from both the methods were in good agreement. The epoxy adhesive with titanium dioxide as filler showed a shelf life exceeding 13 years at ambient conditions (27$^{\circ}$C). Additionally, the lap shear strength of the adhesive joint was also tested after treating thesamples at 70$^{\circ}$C with 90% relative humidity to evaluate the hydrothermal effect on adhesive joint.

• # Bulletin of Materials Science

Volume 43, 2020
All articles
Continuous Article Publishing mode

• # Dr Shanti Swarup Bhatnagar for Science and Technology

Posted on October 12, 2020

Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
Chemical Sciences 2020