A reactive phosphorus-containing polyol incorporated into flexible polyurethane foam: Self-extinguishing behavior and mechanism
| Autor: | Yu-Zhong Wang, Hai-Bo Zhao, Zong-Min Zhu, Wang Liao, Ting Wang, Shui-Xiu Wang, Wen-Hui Rao, Yi Tan |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
chemistry.chemical_classification
Thermogravimetric analysis Materials science Polymers and Plastics Scanning electron microscope 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Limiting oxygen index chemistry.chemical_compound Pyrolysis–gas chromatography–mass spectrometry chemistry Chemical engineering Polyol Mechanics of Materials Cone calorimeter Materials Chemistry 0210 nano-technology Ethylene glycol Polyurethane |
| Zdroj: | Polymer Degradation and Stability. 153:192-200 |
| ISSN: | 0141-3910 |
| Popis: | A novel liquid phosphorus-containing polyol named as PDEO was prepared via reactions between ethylene glycol and phenylphosphonic dichloride. PDEO reacts with the -NCO-terminated prepolymers and forms urethane linkages in the chain extending reaction step, thus, it was used to prepare inherently flame-retardant flexible polyurethane foams (FPUFs). The structure and properties of flame-retardant FPUFs were characterized by scanning electron microscopy (SEM), tensile measurements, limiting oxygen index (LOI), vertical burning tests, cone calorimeter tests and thermogravimetric analysis (TGA). The vertical burning test demonstrated that fire extinguished instantly after the withdrawn of the pilot flame, while the PDEO loading was only 10 php. In addition, the persistent flame retardancy of PDEO in FPUFs was proved by thermal ageing test. The corresponding flame-retardant mechanism of PDEO-containing FPUFs was investigated by pyrolysis gas chromatography mass spectrometry (Py-GC/MS), X-ray photoelectron spectroscopy (XPS), SEM and FTIR, and the results indicated a gaseous phase dominated flame-retardant mechanism of PDEO. |
| Databáze: | OpenAIRE |
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