Effect of Brominated Epoxy Resins on the Thermal Stability and Flame Retardancy of Long-Glass-Fiber Reinforced Polyamide 6
| Autor: | H.-J. Shao, Xiaolang Chen, X.-L. Zuo, D.-F. Zhou, F. Qi, Jianbing Guo |
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| Rok vydání: | 2016 |
| Předmět: |
Thermogravimetric analysis
Materials science Polymers and Plastics General Chemical Engineering Glass fiber 02 engineering and technology Epoxy 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Industrial and Manufacturing Engineering 0104 chemical sciences Limiting oxygen index chemistry.chemical_compound chemistry Cone calorimeter visual_art Antimony trioxide Materials Chemistry visual_art.visual_art_medium Thermal stability Composite material 0210 nano-technology Fire retardant |
| Zdroj: | International Polymer Processing. 31:482-490 |
| ISSN: | 2195-8602 0930-777X |
| DOI: | 10.3139/217.3245 |
| Popis: | In this work, the compounds of brominated epoxy resins and antimony trioxide (BER/Sb2O3) additives are analyzed and added into long-glass-fiber reinforced polyamide 6 (PA6/LGF) composites in order to solve the “candle-wick effect” caused by glass fibers. The thermal stability, flammability, and morphology of charred residues of the flame retardant PA6/LGF composites are investigated by thermogravimetric analysis (TGA), limiting oxygen index (LOI), UL-94 test, cone calorimeter test (CCT), and scanning electronic microscopy (SEM). The results show the addition of BER/Sb2O3 provides improvements in flame retardancy by increasing the LOI values, enhancing UL-94 rating, and reducing the heat release rate, total heat release and effective heat of combustion due to the formation of consolidated and thick charred residual structures on the surfaces of the LGF reinforced PA6 composites. When the content of BER/Sb2O3 is increased to 12 wt%, the LOI value and UL-94 rating of BER/PA6/LGF composites reach 24.8 and V-0, respectively. The TGA results exhibit that the decomposition temperature of the PA6/LGF composites decreases with the addition of BER/Sb2O3 additive, resulting in forming some high quality residual char layer. A possible flame retardant mechanism is proposed to illustrate the effect of the gaseous and condensed phases on the flame retardancy of the PA6/LGF composites. |
| Databáze: | OpenAIRE |
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