NARESH KUMAR KATARI
Articles written in Bulletin of Materials Science
Volume 43 All articles Published: 1 July 2020 Article ID 0162
TANU SRIVASTAVA NARESH KUMAR KATARI BALAJI RAO RAVURI JUHI KUSHWAHA S KRISHNA MOHAN SREEKANTHA B JONNALAGADDA
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.
Volume 45, 2022
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Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
Chemical Sciences 2020
Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
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