Optimization of Glass Transition Temperature and Pot Life of Epoxy Blends Using Response Surface Methodology (RSM)
| Autor: | Jeefferie Abd Razak, Januar Parlaungan Siregar, Arthur Wilkinson, Ramli Junid, Nor Azam Endot |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
pot life
Diglycidyl ether Materials science Polymers and Plastics Central composite design polymer Organic chemistry Diluent Article response surface methodology chemistry.chemical_compound QD241-441 epoxy blends crosslinking glass transition temperature Response surface methodology Composite material Thermal analysis central composite design General Chemistry Epoxy Dynamic mechanical analysis chemistry visual_art visual_art.visual_art_medium Glass transition optimization |
| Zdroj: | Polymers Volume 13 Issue 19 Polymers, Vol 13, Iss 3304, p 3304 (2021) |
| ISSN: | 2073-4360 |
| DOI: | 10.3390/polym13193304 |
| Popis: | 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′-diaminodiphenyl sulfones (DDS). A response surface methodology (RSM) was used, with the target response 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. |
| Databáze: | OpenAIRE |
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