One-step and green synthesis of lightweight, mechanically flexible and flame-retardant polydimethylsiloxane foam nanocomposites via surface-assembling ultralow content of graphene derivative
Article
Article Title | One-step and green synthesis of lightweight, mechanically flexible and flame-retardant polydimethylsiloxane foam nanocomposites via surface-assembling ultralow content of graphene derivative |
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ERA Journal ID | 3854 |
Article Category | Article |
Authors | Cao, Cheng-Fei (Author), Wang, Peng-Huan (Author), Zhang, Jian-Wang (Author), Guo, Kun-Yu (Author), Li, Yan (Author), Xia, Qiao-Qi (Author), Zhang, Guo-Dong (Author), Zhao, Li (Author), Chen, Heng (Author), Wang, Luobin (Author), Gao, Jie-Feng (Author), Song, Pingan (Author) and Tang, Long-Cheng (Author) |
Journal Title | Chemical Engineering Journal |
Journal Citation | 393, pp. 1-13 |
Article Number | 124724 |
Number of Pages | 13 |
Year | 2020 |
Publisher | Elsevier |
Place of Publication | Netherlands |
ISSN | 1385-8947 |
1873-3212 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.cej.2020.124724 |
Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S1385894720307154 |
Abstract | Lightweight polydimethylsiloxane (PDMS) foam materials with outstanding mechanical flexibility and high-temperature stability as well as excellent flame resistance are attractive for various potential applications. However, incorporation of conventional flame retardants needs high filling content and usually induces compromise of other important performance, limiting their practical application significantly. In addition, the problems of complicated procedure and environmental pollution of the traditional processing are imperative but challenging. Here, we report a facile and green in-situ surface-assembly approach to construct two types of graphene oxide (GO) derivative (i.e. sheet and nanoribbon) coatings bonded onto the PDMS foam surface and investigate their discrepancies in thermal and mechanical and flame-retardant properties of the two nanocomposite systems. Interestingly, surface-assembling ultralow loading (≤0.10 wt%) of two GO derivatives can produce significant improvements in thermal stability and flame retardancy of the PDMS foam without affecting its density and elasticity. Typically, ~31% and ~40% reduction in peak heat release rate and ~80% and ~95% improvement in total smoke release were achieved for 0.10 wt% GONR and GO sheet, respectively. Based on the burnt surface zone observation and analysis, the synergistic flame-retardant mechanisms and their differences between the PDMS molecules and two GO derivatives were discussed and clarified. This work provides a new understanding for design and development of green and large-scale fabrication of flame retardant PDMS foam nanocomposite materials. |
Keywords | Polydimethylsiloxane foam; Graphene derivatives; In-situ surface-assembly; Mechanical and thermal properties; Synergetic flame resistance |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 401605. Functional materials |
401609. Polymers and plastics | |
401602. Composite and hybrid materials | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Hangzhou Normal University, China |
Zhejiang University of Technology, China | |
China Academy of Engineering Physics, China | |
Yangzhou University, China | |
Centre for Future Materials | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q628q/one-step-and-green-synthesis-of-lightweight-mechanically-flexible-and-flame-retardant-polydimethylsiloxane-foam-nanocomposites-via-surface-assembling-ultralow-content-of-graphene-derivative
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