Development of single-component epoxy resin with superb thermal stability, flame retardancy, smoke suppression, and latency via Cu-based phosphorus/imidazole-containing complex
Article
Article Title | Development of single-component epoxy resin with superb thermal stability, flame retardancy, smoke suppression, and latency via Cu-based phosphorus/imidazole-containing complex |
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ERA Journal ID | 1691 |
Article Category | Article |
Authors | Wang, Jingsheng, Wang, Jun, Yang, Shuang, Wu, Chaoqun, Chen, Xi, Chen, Kaiwen, Song, Pingan, Wang, Hao and Huo, Siqi |
Journal Title | Polymer Degradation and Stability |
Journal Citation | 228 |
Article Number | 110906 |
Number of Pages | 12 |
Year | 2024 |
Publisher | Elsevier |
Place of Publication | United Kingdom |
ISSN | 0141-3910 |
0144-2880 | |
1873-2321 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.polymdegradstab.2024.110906 |
Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S0141391024002507 |
Abstract | To address the growing need for fire-safe single-component epoxy resin (EP) systems, this study introduced a phosphorus-containing copper complex (Cu-DA) as a multifunctional latent curing agent. The Cu-DA complex, synthesized by coordinating copper (II) chloride and a phosphorus-based imidazole, significantly improved the latency, thermal stability, and fire resistance of single-component EP. The obtained EP/Cu-DA-2 mixture with 15.3 wt% Cu-DA showed a 43-day shelf life and a rapid gel time of 22 min at 150 °C, highlighting its superb latency and fast curing. After curing, the resultant thermoset had a high glass transition temperature of 160.9 °C and increased crosslinking density, indicating superior thermal stability. The EP/Cu-DA-3 system with 17.4 wt% Cu-DA achieved a high limiting oxygen index (LOI) of 37.8 % and a UL-94 V-0 rating, reflecting its satisfactory flame retardancy. Furthermore, compared to the control EP system, the total smoke production (TSP) and maximum smoke density (MSD) of EP/Cu-DA-3 were reduced by approximately 28.4 % and 25.8 %, respectively, demonstrating significantly enhanced smoke suppression. The research offers a scalable strategy for developing single-component EP systems with rapid curing, high fire resistance, and great smoke suppression, meeting the demands of industrial applications. |
Keywords | Single-component epoxy resin ; Phosphorus-containing mental complex ; Thermal stability ; Flame retardancy ; Smoke suppression |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 401609. Polymers and plastics |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Wuhan University of Technology, China |
Centre for Future Materials | |
School of Agriculture and Environmental Science | |
School of Engineering |
https://research.usq.edu.au/item/z7ywv/development-of-single-component-epoxy-resin-with-superb-thermal-stability-flame-retardancy-smoke-suppression-and-latency-via-cu-based-phosphorus-imidazole-containing-complex
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