Interface construction of phosphorus-based hybrid with micro/nano hierarchical structure toward intumescent flame-retardant epoxy resins with robust mechanical properties
Polymer Degradation and Stability, ISSN: 0141-3910, Vol: 225, Page: 110808
2024
- 6Citations
- 4Captures
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Article Description
The facile strategy for constructing phosphorus-based hybrid (APP@Zn-PT) is proposed to the simultaneous optimization of flame-retardant properties and mechanical properties of epoxy resins (EP), which is a long-term concern for the intumescent flame-retardant systems. Herein, APP@Zn-PT was fabricated via the assembly of nano-sheet phosphorus-containing triazole-zinc complex (Zn-PT) on the surface of ammonium polyphosphate micro-particles (APP). Notably, EP modified with APP@Zn-PT synchronously displayed highly fire-safe performance and excellent mechanical properties, which is seldom found in the traditionally intumescent flame-retardant EP systems. In the presence of 7 wt% APP@Zn-PT, EP acquired a high limiting oxygen index (LOI) of 31.1 %, and succeeded to meet the requirement for a UL-94 V-0 rating. Meanwhile, the results of cone calorimeter test (CCT) showed that the crucial parameters involving smoke production and heat release of EP/APP@Zn-PT presented significant decrease, that total smoke production (TSP) was dropped from 55.7 m 2 of EP to 36.2 m 2, and the peak of heat release rate (PHRR) was decreased from 1156 to 384 kW/m 2. In addition, the interfacial interaction of APP@Zn-PT in epoxy matrix was improved as compared to APP due to the embedment of nano-sheet Zn-PT, which possessed reinforcing effect as well, and thereby the mechanical performances of EP/APP@Zn-PT were superior to neat EP and EP/APP. Generally, this work lays a foundation for the construction of phosphorus-based micro-nano hybrids, showing a great potential in high-performance polymers for practical application.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0141391024001526; http://dx.doi.org/10.1016/j.polymdegradstab.2024.110808; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85192292009&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S0141391024001526; https://dx.doi.org/10.1016/j.polymdegradstab.2024.110808
Elsevier BV
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