Breaking the trade-off between mechanical properties and fire safety of epoxy resins based on phosphaphenanthrene derivatives by covalent crosslinking
Article
| Article Title | Breaking the trade-off between mechanical properties and fire safety of epoxy resins based on phosphaphenanthrene derivatives by covalent crosslinking |
|---|---|
| ERA Journal ID | 1691 |
| Article Category | Article |
| Authors | Gan, Xianghui, Wang, Jun, Yang, Shuang, Chen, Xi, Wang, Jingsheng, Chen, Kaiwen, Zhang, Yuguo, Zhu, Lu, Xu, Lin and Huo, Siqi |
| Journal Title | Polymer Degradation and Stability |
| Journal Citation | 220 |
| Article Number | 110634 |
| Number of Pages | 10 |
| 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.2023.110634 |
| Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S014139102300383X |
| Abstract | The high brittleness and flammability issues of epoxy resins (EPs) seriously limit their high-performance applications in industries. However, most of the current research has been failing to simultaneously enhance both toughness and flame retardancy of EP by a facile method. In this work, three phosphaphenanthrene derivatives (DOPO, ODOPM and DOPA) were applied to prepare intrinsic flame-retardant epoxy resins by using diphenylmethane-4,4′-diisocyanate (MDI) as a bridge. The as-prepared EP/MDI/DOPO, EP/MDI/ODOPM, and EP/MDI/DOPA exhibited obviously enhanced flame retardancy and mechanical performance relative to EP. As the P content reached 1 wt%, the limiting oxygen indexes (LOIs) and vertical combustion (UL-94) levels of EP/MDI/DOPO, EP/MDI/ODOPM and EP/MDI/DOPA reached 28.9 %, 31.2 %, and 33.4 %, and V-1, V-0, and V-0. The impact strengths of EP/MDI/ODOPM and EP/MDI/DOPA containing 0.75 wt % of phosphorus were higher than that of EP by 209.3 % and 212.4 %, respectively, due to the covalent linkage between the phosphaphenanthrene-derived groups, MDI, and polymer network. Thereby, a simple method is revealed in this work to improve both fire retardance and toughness of EP, which facilitates its high-performance development. |
| Keywords | Epoxy resin; Diphenylmethane-4,4′-diisocyanate; Phosphaphenanthrene; Flame retardancy ; Mechanical properties |
| 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 |
| Wuhan East Lake of HiTech Group, China | |
| School of Engineering | |
| Centre for Future Materials |
https://research.usq.edu.au/item/z49z2/breaking-the-trade-off-between-mechanical-properties-and-fire-safety-of-epoxy-resins-based-on-phosphaphenanthrene-derivatives-by-covalent-crosslinking
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