Novel organophosphorus compound with amine groups towards self-extinguishing epoxy resins at low loading
| Autor: | Chuanbai Yu, Yuanli Liu, Peng Zhao, Luo Haiqiang, Wen-Hui Rao, Liang Wang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
High flame-retardant efficiency
Thermogravimetric analysis Reactive flame retardant Materials science Flame inhibition 02 engineering and technology 010402 general chemistry 01 natural sciences Limiting oxygen index Differential scanning calorimetry Cone calorimeter lcsh:TA401-492 General Materials Science Epoxy resin Char Fourier transform infrared spectroscopy Mechanical Engineering Epoxy 021001 nanoscience & nanotechnology 0104 chemical sciences Mechanics of Materials visual_art visual_art.visual_art_medium lcsh:Materials of engineering and construction. Mechanics of materials Charring 0210 nano-technology Nuclear chemistry Charring effect |
| Zdroj: | Materials & Design, Vol 193, Iss, Pp 108838-(2020) |
| ISSN: | 0264-1275 |
| Popis: | To enhance the fire safety of epoxy resins (EP) without affecting other properties, a novel organophosphorus compound named DDPPM has been synthesized and used as co-curing agent to obtain inherent flame-retardant EP. The Fourier transform infrared spectroscopy (FT-IR), 1H nuclear magnetic resonance (1H NMR), and 31P nuclear magnetic resonance (31P NMR) proven the successful synthesis of DDPPM. The mechanical results demonstrated that the mechanical properties of the epoxy resin did not deteriorate after adding DDPPM, and differential scanning calorimetry (DSC) shown that the glass transition temperature (Tg) of EP/DDPPM was maintained. Importantly, the EP/DDPPM presented satisfying flame-retardant efficiency in limiting oxygen index (LOI) and vertical burning tests. Incorporating 2 wt% DDPPM, the EP achieved the UL 94 V-0 rating and the LOI value was 31%. Meanwhile, the cone calorimeter (CC) test verified that DDPPM contributed to the reduction of heat and smoke release accompanied by increasing char yield. The thermogravimetric analysis/infrared spectrometry (TG-FTIR), pyrolysis gas chromatography/mass spectrometry (Py-GC/MS) and char analysis certified the flame inhibition and charring effect of DDPPM in EP. |
| Databáze: | OpenAIRE |
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