Durable flame-retardant, strong and tough epoxy resins with well-preserved thermal and optical properties via introducing a bio-based, phosphorus-phosphorus, hyperbranched oligomer
Article
Ye, Guofeng, Huo, Siqi, Wang, Cheng, Song, Pingan, Fang, Zhengping, Wang, Hao and Liu, Zhitian. 2023. "Durable flame-retardant, strong and tough epoxy resins with well-preserved thermal and optical properties via introducing a bio-based, phosphorus-phosphorus, hyperbranched oligomer." Polymer Degradation and Stability. 207. https://doi.org/10.1016/j.polymdegradstab.2022.110235
Article Title | Durable flame-retardant, strong and tough epoxy resins with well-preserved thermal and optical properties via introducing a bio-based, phosphorus-phosphorus, hyperbranched oligomer |
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ERA Journal ID | 1691 |
Article Category | Article |
Authors | Ye, Guofeng, Huo, Siqi, Wang, Cheng, Song, Pingan, Fang, Zhengping, Wang, Hao and Liu, Zhitian |
Journal Title | Polymer Degradation and Stability |
Journal Citation | 207 |
Article Number | 110235 |
Number of Pages | 11 |
Year | 2023 |
Publisher | Elsevier |
ISSN | 0141-3910 |
0144-2880 | |
1873-2321 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.polymdegradstab.2022.110235 |
Web Address (URL) | https://www.sciencedirect.com/science/article/abs/pii/S014139102200413X |
Abstract | The manufacture of transparent, durable fire-safe, strong yet tough epoxy resins (EPs) remains a great challenge. Herein, a novel hyperbranched, P-P synergetic, bio-based flame retardant (DIT) was synthesized, which was composed by 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO), bio-derived itaconic anhydride (ITA) and trihydroxymethylphosphine oxide (THPO) moieties. Adding 2 wt% DIT enabled the EP/2DIT sample to achieve a UL-94 V-0 rating and a limiting oxygen index (LOI) of 36.6%. The peak heat release rate and total smoke production of EP/4DIT sample with 4 wt% DIT were 23.8% and 19.9% lower than those of virgin EP sample. Notably, the EP/DIT sample featured durable flame retardancy because of the oligomeric structure of DIT. The high flame-retardant efficiency of DIT was mainly due to the synergism between DOPO and THPO. DIT simultaneously strengthened and toughened EP thermoset at a low addition (≤2 wt%), and 2 wt% of DIT increased the elongation at break, tensile strength, flexural strength and impact strength of EP/2DIT sample by 35.8%, 40.5%, 24.2% and 21.2%. Moreover, the glass transition temperature (Tg) of EP/2DIT sample was equal to that of EP sample, and the high transparent was maintained. Hence, this work offers an all-rounded design for the creation of durable flame-retardant EPs with superior mechanical properties, thermal resistance and transparency by introducing hyperbranched, P-P, bio-based flame retardants, which shows huge potential and broad prospect. © 2022 Elsevier Ltd |
Keywords | Durable flame retardancy |
ANZSRC Field of Research 2020 | 401609. Polymers and plastics |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Wuhan Institute of Technology, China |
NingboTech University, China | |
Centre for Future Materials |
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