Tough, high-strength, flame-retardant and recyclable polyurethane elastomers based on dynamic borate acid esters
Article
Article Title | Tough, high-strength, flame-retardant and recyclable polyurethane elastomers based on dynamic borate acid esters |
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ERA Journal ID | 1702 |
Article Category | Article |
Authors | Zhang, Tiantian, Huo, Siqi, Ye, Guofeng, Wang, Cheng, Zhang, Qi and Liu, Zhitian |
Journal Title | Reactive and Functional Polymers |
Article Number | 106056 |
Year | 2024 |
Publisher | Elsevier |
Place of Publication | Netherlands |
ISSN | 1381-5148 |
1873-166X | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.reactfunctpolym.2024.106056 |
Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S1381514824002311 |
Abstract | With the wide application of polyurethane elastomers, it is necessary to develop recyclable, fire-retardant polyurethane elastomers with great mechanical properties to comply with industrial requirements. Herein, we fabricated a flame-retardant, recyclable, strong yet tough polyurethane elastomer (PIDB-1) based on dynamic borate acid esters. The introduction of phosphaphenanthrene and boron-containing groups endow PIDB-1 with great flame retardancy, as reflected by it achieving the vertical burning (UL-94) V-0 rating. The PIDB-1 film shows high visible light transmittance, and its transmittance reaches 90 % at the wavelength of 800 to 900 nm. The tensile strength of PIDB-1 is 54.9 MPa, and its toughness reaches 207.8 kJ/m3, indicative of superior mechanical properties. Meanwhile, the dynamic borate acid esters allow the PIDB-1 elastomer to possess physical and chemical recyclability. When using PIDB-1 as a polymer matrix for carbon fiber-reinforced polymer composites, the carbon fibers can be fully recycled. This work provides an integrated design strategy for creating transparent, flame-retardant, recyclable polyurethane elastomers combining high strength and toughness based on dynamic borate ester bonds, which is expected to find wide applications in different industries. |
Keywords | Polyurethane elastomer; Transparency; Flame retardancy; Mechanical proper; RecyclabilityRecyclability |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 401609. Polymers and plastics |
Byline Affiliations | Wuhan Institute of Technology, China |
School of Engineering | |
Centre for Future Materials |
https://research.usq.edu.au/item/z97z5/tough-high-strength-flame-retardant-and-recyclable-polyurethane-elastomers-based-on-dynamic-borate-acid-esters
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