Tailored thermal and mechanical properties of epoxy resins prepared using multiply hydrogen-bonding reactive modifiers
| Autor: | Ching Hsuan Lin, Shenghong A. Dai, Tzong-Yuan Juang, Ru-Jong Jeng, Wen-Chiung Su, Shi-Min Shau, Jene-Ku Liu, Chia-Cheng Chang |
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| Rok vydání: | 2010 |
| Předmět: |
chemistry.chemical_classification
Polymers and Plastics Thermal decomposition Thermosetting polymer General Chemistry Polymer Epoxy Surfaces Coatings and Films chemistry visual_art Polymer chemistry Materials Chemistry visual_art.visual_art_medium Thermal stability Fourier transform infrared spectroscopy Glass transition Curing (chemistry) |
| Zdroj: | Journal of Applied Polymer Science. 120:2411-2420 |
| ISSN: | 0021-8995 |
| DOI: | 10.1002/app.33445 |
| Popis: | In this study, we synthesized a phosphorus-containing triply functionalized reactive modifier, DOPO-tris(azetidine-2,4-dione), and a phosphorus-free doubly functionalized reactive modifier, bis(azetidine-2,4-dione), and embedded them into epoxy resin systems. We characterized these synthesized reactive modifiers using Fourier transform infrared spectroscopy, nuclear magnetic resonance spectroscopy, elemental analysis, and mass spectrometry. During the thermosetting processes, we reacted the epoxy curing agents 4,4-diaminodiphenylmethane and tris(4-aminophenyl)amine with the multiply hydrogen-bonding reactive modifiers and epoxy monomers. The introduction of the DOPO segment, strongly hydrogen bonding malonamide linkages, and hard aromatic groups into the backbones of the synthesized reactive modifiers resulted in epoxy networks exhibiting tailorable crosslinking densities, flexibilities, glass transition temperatures, thermal decomposition temperatures, and flame retardancies. Furthermore, dynamic mechanical analyses indicated that intermolecular hydrogen bonding of these reactive modifiers enhanced the thermal and physical properties of their epoxy resins through the formation of unique pseudocrosslinked polymer networks. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011 |
| Databáze: | OpenAIRE |
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