Optimization of glass transition temperature and pot life of epoxy blends using response surface methodology (RSM)
The aim of this work was to improve the processability of triglycidyl‐p‐aminophenol (TGPAP) epoxy resin. To achieve this improvement, a diluent, the diglycidyl ether of bisphenol F (DGEBF or BPF), was added to TGPAP, and the blended epoxy was then cured with 4, 4′‐diamino‐diphenyl sulfones (DDS). A...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI
2021
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| Online Access: | http://eprints.utem.edu.my/id/eprint/25967/2/POLYMERS-13-03304.PDF http://eprints.utem.edu.my/id/eprint/25967/ https://www.mdpi.com/2073-4360/13/19/3304 https://doi.org/10.3390/polym13193304 |
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| Institution: | Universiti Teknikal Malaysia Melaka |
| Language: | English |
| Summary: | The aim of this work was to improve the processability of triglycidyl‐p‐aminophenol (TGPAP) epoxy resin. To achieve this improvement, a diluent, the diglycidyl ether of bisphenol F (DGEBF or BPF), was added to TGPAP, and the blended epoxy was then cured with 4, 4′‐diamino‐diphenyl sulfones (DDS). A response surface methodology (RSM) was used, with the target re‐sponse being to achieve a blended resin with a high glass transition temperature (Tg) and maximum pot life (or processing window, PW). Characterization through dynamic mechanical thermal analysis (DMTA) and using a rheometer indicated that the optimum formulation was obtained at 55.6 wt.% of BPF and a stoichiometric ratio of 0.60. Both values were predicted to give Tg at 180 °C and a processing window of up to 136.1 min. The predicted values were verified, with the obtained Tg
and processing window (PW) being 181.2 ± 0.8 °C and 140 min, respectively, which is close to the values predicted using the RSM. |
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