A Phosphorus-Nitrogen-Carbon Synergistic Nanolayered Flame Retardant for Polystyrene
Polymers are widely used in our daily life; however, most of them are highly flammable. Once modified with flame retardants (FRs), polymers always have deteriorative properties in mechanical strength aspects. As a countermeasure, a novel unified phosphorus and nitrogen-containing organic nano-layere...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-05-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/14/10/2055 |
| _version_ | 1797496227456090112 |
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| author | Wen-Jie Yuan Wei Zhao Gang Wu Hai-Bo Zhao |
| author_facet | Wen-Jie Yuan Wei Zhao Gang Wu Hai-Bo Zhao |
| author_sort | Wen-Jie Yuan |
| collection | DOAJ |
| description | Polymers are widely used in our daily life; however, most of them are highly flammable. Once modified with flame retardants (FRs), polymers always have deteriorative properties in mechanical strength aspects. As a countermeasure, a novel unified phosphorus and nitrogen-containing organic nano-layered flame retardant (BA-MA) was synthesized by the assembly of biphenyl-4,4′-diphosphonic acid (BA) and melamine (MA), which was used as an additive flame retardant for polystyrene (PS) resin. The chemical structure and morphology of BA-MA were characterized, and a possible growth mechanism of the nanolayered structure was presented in detail. The resulting BA-MA with a thickness of about 60 nm can be uniformly dispersed in the PS resin, thus maintaining the mechanical properties of the material. Remarkably, under only 1 wt% loading of BA-MA, the flammability of PS can be largely reduced with a 68% reduction in the peak heat release rate. Additionally, the smoke release was also significantly inhibited. The research on flame retardant mechanisms shows that BA-MA mainly produces incombustible gas to dilute the concentration of combustibles and promote the formation of aromatic carbon layers to isolate oxygen transmission and heat transfer. |
| first_indexed | 2024-03-10T03:00:38Z |
| format | Article |
| id | doaj.art-3babb0ad0b7641cc898c21bf978ce225 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-10T03:00:38Z |
| publishDate | 2022-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-3babb0ad0b7641cc898c21bf978ce2252023-11-23T12:46:46ZengMDPI AGPolymers2073-43602022-05-011410205510.3390/polym14102055A Phosphorus-Nitrogen-Carbon Synergistic Nanolayered Flame Retardant for PolystyreneWen-Jie Yuan0Wei Zhao1Gang Wu2Hai-Bo Zhao3Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), State Key Laboratory of Polymer Materials Engineering, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, Sichuan University, Chengdu 610064, ChinaCollaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), State Key Laboratory of Polymer Materials Engineering, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, Sichuan University, Chengdu 610064, ChinaCollaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), State Key Laboratory of Polymer Materials Engineering, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, Sichuan University, Chengdu 610064, ChinaCollaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), State Key Laboratory of Polymer Materials Engineering, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, Sichuan University, Chengdu 610064, ChinaPolymers are widely used in our daily life; however, most of them are highly flammable. Once modified with flame retardants (FRs), polymers always have deteriorative properties in mechanical strength aspects. As a countermeasure, a novel unified phosphorus and nitrogen-containing organic nano-layered flame retardant (BA-MA) was synthesized by the assembly of biphenyl-4,4′-diphosphonic acid (BA) and melamine (MA), which was used as an additive flame retardant for polystyrene (PS) resin. The chemical structure and morphology of BA-MA were characterized, and a possible growth mechanism of the nanolayered structure was presented in detail. The resulting BA-MA with a thickness of about 60 nm can be uniformly dispersed in the PS resin, thus maintaining the mechanical properties of the material. Remarkably, under only 1 wt% loading of BA-MA, the flammability of PS can be largely reduced with a 68% reduction in the peak heat release rate. Additionally, the smoke release was also significantly inhibited. The research on flame retardant mechanisms shows that BA-MA mainly produces incombustible gas to dilute the concentration of combustibles and promote the formation of aromatic carbon layers to isolate oxygen transmission and heat transfer.https://www.mdpi.com/2073-4360/14/10/2055flame retardancynano-layered structurenanocompositepolystyrene |
| spellingShingle | Wen-Jie Yuan Wei Zhao Gang Wu Hai-Bo Zhao A Phosphorus-Nitrogen-Carbon Synergistic Nanolayered Flame Retardant for Polystyrene Polymers flame retardancy nano-layered structure nanocomposite polystyrene |
| title | A Phosphorus-Nitrogen-Carbon Synergistic Nanolayered Flame Retardant for Polystyrene |
| title_full | A Phosphorus-Nitrogen-Carbon Synergistic Nanolayered Flame Retardant for Polystyrene |
| title_fullStr | A Phosphorus-Nitrogen-Carbon Synergistic Nanolayered Flame Retardant for Polystyrene |
| title_full_unstemmed | A Phosphorus-Nitrogen-Carbon Synergistic Nanolayered Flame Retardant for Polystyrene |
| title_short | A Phosphorus-Nitrogen-Carbon Synergistic Nanolayered Flame Retardant for Polystyrene |
| title_sort | phosphorus nitrogen carbon synergistic nanolayered flame retardant for polystyrene |
| topic | flame retardancy nano-layered structure nanocomposite polystyrene |
| url | https://www.mdpi.com/2073-4360/14/10/2055 |
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