Novel polyamide 6 composites based on Schiff-base containing phosphonate oligomer: High flame retardancy, great processability and mechanical property
| Autor: | Wen-Da Li, Yan-Fang Xiao, Hai-Bo Zhao, Xiao-Min Ding, De-Ming Guo, Yu-Zhong Wang, Bo-Wen Liu, Feng-Ming He, Li Chen |
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| Rok vydání: | 2021 |
| Předmět: |
Schiff base
Materials science Composite number 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Phosphonate Oligomer 0104 chemical sciences chemistry.chemical_compound symbols.namesake X-ray photoelectron spectroscopy chemistry Mechanics of Materials Polyamide Ceramics and Composites symbols Composite material Fourier transform infrared spectroscopy 0210 nano-technology Raman spectroscopy |
| Zdroj: | Composites Part A: Applied Science and Manufacturing. 146:106423 |
| ISSN: | 1359-835X |
| DOI: | 10.1016/j.compositesa.2021.106423 |
| Popis: | Conventional methods of improving the flame retardancy of PA 6 usually involve the sacrifice of mechanical properties, which is unfavorable for the practical application. Herein, two Schiff-base containing phosphonate oligomers PSA and POSC, were designed and used as novel flame retardants for PA 6. The PA 6-PSA20 composite involving P-Ph structure achieved a LOI value of 27% and UL-94 V-0 rating, while the PA 6-POSC20 composite involving P-O-Ph structure achieved a higher LOI value of 32% but a UL-94 V-2 rating. The PA 6-POSC composites also exhibited better heat-suppression effect than the PA 6-PSA composites. The different flame-retardant mechanism of these two flame retardants were comprehensively studied via Raman spectra, XPS, FTIR, TG-IR and Py-GC/MS. Additionally, the PA 6 composites all exhibited great processability and largely retained mechanical properties. This work proposed an efficient route for preparing flame-retardant polyamide composite with excellent overall performance. |
| Databáze: | OpenAIRE |
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