Enhancing flame retardancy and ultraviolet aging resistance of intumescent flame retardant polypropylene by incorporating cerium oxide
Article
| Article Title | Enhancing flame retardancy and ultraviolet aging resistance of intumescent flame retardant polypropylene by incorporating cerium oxide |
|---|---|
| ERA Journal ID | 1691 |
| Article Category | Article |
| Authors | Feng, Jingqi, Wang, Ruiping, Geng, Jiaqi, Huo, Siqi, Zhang, Zhiyong, Xu, Miaojun, Zhu, Mingyang and Li, Bin |
| Journal Title | Polymer Degradation and Stability |
| Journal Citation | 244 |
| Article Number | 111850 |
| Number of Pages | 10 |
| Year | 2026 |
| 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.2025.1118 |
| Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S0141391025006792 |
| Abstract | The flame-retardant modification of polypropylene (PP) often deteriorates its resistance to ultraviolet (UV) radiation, leading to severe degradation in both flame retardancy and mechanical properties during long-term service. To address this issue, cerium oxide (CeO₂) was incorporated into an intumescent flame retardant (IFR) system to achieve synergistic flame retardancy and enhance anti-UV performance. The resultant PP/IFR/CeO2 achieved a UL-94 V-0 rating with a limiting oxygen index (LOI) of 32.7 % at a total loading of only 20 wt% IFR and CeO2. After UV irradiation for 120 h, the surface of PP/IFR/CeO2 remained smooth, with only shallow cracks, and its water contact angle was maintained at 64.5°. The carbonyl index increased merely to 1.45, indicating a markedly low degree of photo-oxidative aging. In addition, the tensile strength and elongation at break decreased by 9.4 % and 28.5%, respectively, which were significantly smaller reductions than those of PP/IFR. The results indicate that CeO2 can effectively improve the anti-UV performance and flame retardancy of PP/IFR, providing a valuable foundation for developing durable, flame-retardant PP composites with improved anti-UV performance. |
| Keywords | Polyethylene; Cerium oxide; Intumescent flame retardant; Ultraviolet aging resistance; Flame retardancy |
| Contains Sensitive Content | Does not contain sensitive content |
| ANZSRC Field of Research 2020 | 401602. Composite and hybrid materials |
| Byline Affiliations | Northeast Forestry University, China |
| School of Science, Engineering and Digital Technologies - Engineering | |
| Centre for Future Materials |
https://research.usq.edu.au/item/100wz4/enhancing-flame-retardancy-and-ultraviolet-aging-resistance-of-intumescent-flame-retardant-polypropylene-by-incorporating-cerium-oxide
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