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Synthesis and Properties of a Novel Intumescent Flame Retardant (IFR) and Its Application in Halogen-Free Flame Retardant Ethylene Propylene Diene Terpolymer (EPDM) |
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| Authors: | Longchao Du Guoyong Xu Yuchuan Zhang Jiasheng Qian Jinyang Chen |
| Affiliation: | 1. Faculty of Chemistry and Chemical Engineering, Anhui University, Key Laboratory of Environment-Friendly Polymer Materials of Anhui Province , Hefei , Anhui , China;2. Zhongding Sealing Parts Co. Ltd., Ningguo , Anhui , China lcdu@ustc.edu.cn;4. Department of Modern Experiment Technology Center , Anhui University , Hefei , Anhui , People's Republic of China;5. Faculty of Chemistry and Chemical Engineering, Anhui University, Key Laboratory of Environment-Friendly Polymer Materials of Anhui Province , Hefei , Anhui , China;6. Zhongding Sealing Parts Co. Ltd., Ningguo , Anhui , China |
| Abstract: | The PDP, a novel intumescent flame retardant (IFR) with high charred residue of 40.8% in N2 at 700°C by TGA was synthesized successfully for preparing halogen-free flame-retardant EPDM composites. The UL-94 V-0 rating was achieved for EPDM composites with 20 phrs carbon black at the same time by using only 60 phrs PDP. In situ FTIR spectroscopy reveals that P–N rich charred residues are formed through the interaction between hydrogen atom in weak base of P–NH–C and phosphate. SEM characterizes the formation of intumescent chars during burning. The mechanical properties of composites are also discussed. |
| Keywords: | EPDM Flammability Intumescent flame retardant Synthesis |