Fabrication and Mechanism Study of Cerium-Based P, N-Containing Complexes for Reducing Fire Hazards of Polycarbonate with Superior Thermostability and Toughness
Article
Article Title | Fabrication and Mechanism Study of Cerium-Based P, N-Containing Complexes for Reducing Fire Hazards of Polycarbonate with Superior Thermostability and Toughness |
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ERA Journal ID | 40638 |
Article Category | Article |
Authors | Sai, Ting, Su, Yukai, Shen, Haifeng, Ran, Shiya, Huo, Siqi, Guo, Zhenghong and Fang, Zhengping |
Journal Title | ACS Applied Materials and Interfaces |
Journal Citation | 13 (25), pp. 30061-30075 |
Number of Pages | 15 |
Year | 2021 |
Publisher | American Chemical Society |
Place of Publication | United States |
ISSN | 1944-8244 |
1944-8252 | |
Digital Object Identifier (DOI) | https://doi.org/10.1021/acsami.1c07153 |
Web Address (URL) | https://pubs.acs.org/doi/10.1021/acsami.1c07153 |
Abstract | A superior comprehensive performance is essential for the extensive utilization of polymers. Current flame-retardant strategies for polycarbonates (PCs) usually realize satisfied fire resistance at the cost of thermostability, toughness, and/or mechanical robustness. Thus, we report a rare-earth-based P, N-containing complex with a lamellar aggregated structure [Ce(DPA)3] by a coordination reaction between a tailored ligand and cerium(III) nitrate. The results indicate that incorporating 3 wt % Ce(DPA)3 enables the resultant PC composite to achieve UL-94 V-0 rating, with a 55% reduction in the peak heat release rate. Besides, the initial (T5) and maximum (Tmax1 and Tmax2) decomposition temperatures are significantly increased by 21, 19, and 27 °C, respectively, in an air atmosphere. Moreover, the impact strength and elongation at break of the PC composite containing 3 wt % Ce(DPA)3 are greatly increased by 20 and 59%, respectively, relative to pristine PC, while its tensile strength (57 MPa) is still close to that of bulk PC (60 MPa). Notably, this work provides a novel methodology for revealing the evolution mechanisms of chemical structures of vapor and residual products during thermal decomposition, which is conducive to guiding fire and heat resistance modification of PC in the future. |
Keywords | fire-retardant mechanisms; polycarbonate; rare-earth complexes; thermal resistance; toughen |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 401602. Composite and hybrid materials |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | NingboTech University, China |
Zhejiang University, China |
https://research.usq.edu.au/item/yyxw6/fabrication-and-mechanism-study-of-cerium-based-p-n-containing-complexes-for-reducing-fire-hazards-of-polycarbonate-with-superior-thermostability-and-toughness
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