A DOPO-based phosphorus-nitrogen flame retardant bio-based epoxy resin from diphenolic acid: Synthesis, flame-retardant behavior and mechanism
العنوان: | A DOPO-based phosphorus-nitrogen flame retardant bio-based epoxy resin from diphenolic acid: Synthesis, flame-retardant behavior and mechanism |
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المؤلفون: | Zice Xu, Ming Li, Guo Zongwei, Lei Shang, Mengjie Zhang, Yuhui Ao, Chi Zhiyuan |
المصدر: | Polymer Degradation and Stability. 176:109151 |
بيانات النشر: | Elsevier BV, 2020. |
سنة النشر: | 2020 |
مصطلحات موضوعية: | Bisphenol A, Polymers and Plastics, Bisphenol, Chemistry, Thermosetting polymer, 02 engineering and technology, Calorimetry, Epoxy, 010402 general chemistry, 021001 nanoscience & nanotechnology, Condensed Matter Physics, 01 natural sciences, 0104 chemical sciences, chemistry.chemical_compound, Mechanics of Materials, visual_art, Materials Chemistry, visual_art.visual_art_medium, Char, Diphenolic acid, 0210 nano-technology, Fire retardant, Nuclear chemistry |
الوصف: | Searching a renewable and flame-retardant alternative to bisphenol A epoxy resins is a necessary development trend. Diphenolic acid, a plant derivative, has been proven to be one of the sustainable alternatives to bisphenol A. However, how to impart the flame-retardant property to diphenolic acid thermosets is still a challenge to synthesize high performance intrinsic flame-retardant bio-based epoxy resins. A flame-retardant bio-based epoxy resin (TEBA) was designed and synthesized via a three-step synthetic pathway from 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO)、diethanolamine and diphenolic acid (DPA). The chemical structures of the intermediate and final products were confirmed by 1HNMR and FTIR spectroscopy. TEBA cured with 4,4′-diaminodiphenylmethane (DDM) curing agent was compared with a standard bisphenol A epoxy resin (DGEBA). Due to the combination of phosphorus and nitrogen in the main chain, the TEBA-DDM shows superior flame retardancy. Compared with DGEBA-DDM, LOI of TEBA-DDM increased from 25.8% to 42.3%, UL-94 test rating from no rating to V-0 rating, self-extinguishing within 3s. The peak heat release rate (PHRR) in the cone calorimetry test decreased by 67%. total heat release (THR) and total smoke generation (TSP) decreased by 27% and 35%, respectively. In addition, the flame retardant mechanism of TEBA epoxy thermosets was researched by FTIR, residual char photograph, SEM, TG-IR analysis and Raman spectroscopy. Meanwhile, TEBA-DDM and DGEBA-DDM have comparable mechanical properties. |
تدمد: | 0141-3910 |
URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::3638c326015be2b1d65921ea0fbb3f8c https://doi.org/10.1016/j.polymdegradstab.2020.109151 |
حقوق: | CLOSED |
رقم الأكسشن: | edsair.doi...........3638c326015be2b1d65921ea0fbb3f8c |
قاعدة البيانات: | OpenAIRE |
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