A hyperbranched P/N/B-containing oligomer as multifunctional flame retardant for epoxy resins
Article
Article Title | A hyperbranched P/N/B-containing oligomer as multifunctional flame retardant for epoxy resins |
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ERA Journal ID | 4883 |
Article Category | Article |
Authors | Huo, Siqi (Author), Sai, Ting (Author), Ran, Shiya (Author), Guo, Zhenghong (Author), Fang, Zhengping (Author) and Song, Pingan (Author) |
Journal Title | Composites Part B: Engineering |
Journal Citation | 234, pp. 1-12 |
Article Number | 109701 |
Number of Pages | 12 |
Year | 2022 |
Publisher | Elsevier |
Place of Publication | United Kingdom |
ISSN | 1359-8368 |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.compositesb.2022.109701 |
Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S1359836822000877 |
Abstract | Flame-retardant epoxy resins (EPs) with superior optical, mechanical and dielectric properties are highly desired in high-tech industries. In this work, a multifunctional hyperbranched additive (BDHDP) was synthesized for EPs. Our results showed that BDHDP catalyzed the curing of epoxy resin because of its tertiary amine and hydroxyl groups. At a low addition level (<3.0 wt%), BDHDP increased the glass-transition temperature and maintained the optical transmittance of epoxy thermoset. Meanwhile, BDHDP improved the mechanical strength and toughness, and reduced the dielectric constant and loss of EP because of the rigid phosphaphenanthrene groups and intra-molecular cavities. Moreover, BDHDP reduced the heat release and smoke generation during the EP combustion. Adding 1.5 wt% of BDHDP led to a UL-94 V-0 rating, and reduced the total smoke production by 16.4%. Hence, this study offers an effective method to create transparent EP thermosets with outstanding mechanical, dielectric and fire-retardant properties via incorporating a P/N/B-containing hyperbranched oligomer. |
Keywords | Epoxy resin; Hyperbranched oligomer; Fire safety; Mechanical properties; Dielectric performances |
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 | NingboTech University, China |
Zhejiang University, China | |
Centre for Future Materials | |
Institution of Origin | University of Southern Queensland |
Funding source | Australian Research Council (ARC) Grant ID DP190102992 |
Funding source | Australian Research Council (ARC) Grant ID FT190100188 |
https://research.usq.edu.au/item/q7242/a-hyperbranched-p-n-b-containing-oligomer-as-multifunctional-flame-retardant-for-epoxy-resins
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