Construction of hierarchical Ti3C2TX@PHbP-PHC architecture with enhanced free-radical quenching capability: Effective reinforcement and fire safety performance in bismaleimide resin

•Hierarchical Ti3C2TX@PHbP-PHC architecture was innovatively synthesized.•Ti3C2TX@PHbP-PHC exhibited significant decrease in PHRR, THR and TSP.•BMI/Ti3C2TX@PHbP-PHC 0.5 achieved a significant increase in impact strength.•The synergistic mechanical reinforcement and flame-retardant mechanism among Ti...

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Published in:Chemical engineering journal (Lausanne, Switzerland : 1996) Switzerland : 1996), 2022-01, Vol.427, p.131634, Article 131634
Main Authors: Zhou, Yifan, Qiu, Shuilai, Guo, Wenwen, Chu, Fukai, Zhou, Xia, Chen, Weijian, Wang, Jingwen, Zhang, Kang, Cheng, Liang, Hu, Yuan
Format: Article
Language:English
Subjects:
Fire safety
Hindered amine
Multifunctional
Ti3C2TX
Toughness
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Summary:•Hierarchical Ti3C2TX@PHbP-PHC architecture was innovatively synthesized.•Ti3C2TX@PHbP-PHC exhibited significant decrease in PHRR, THR and TSP.•BMI/Ti3C2TX@PHbP-PHC 0.5 achieved a significant increase in impact strength.•The synergistic mechanical reinforcement and flame-retardant mechanism among Ti3C2TX, PHbP and PHC was innovatively revealed. The effect of hindered amine light stabilizer on free radical quenching can be combined with the cross-linked polyphosphazene containing PN structure to improve the flame retardant efficiency of titanium carbide (Ti3C2TX) in both gas phase and condensed phase. Here, a hindered amine and polyphosphazene modified Ti3C2TX (Ti3C2TX@PHbP-PHC) was obtained. With the loading of Ti3C2TX@PHbP-PHC in the bismaleimide resin (BMI) increased to 2 wt%, an 43% reduction was achieved in the peak heat release rate (PHRR), and a 47% reduction in the total heat release rate (THR). Meanwhile, the total gaseous products and total smoke production (TSP) exhibited a similar decreasing trend. Furthermore, 0.5 wt% BMI system exhibited the highest storage modulus (2629 MPa) and impact strength (13.7 MPa), which were 21% and 76% higher than pure BMI, respectively. Therefore, the developed functionalized Ti3C2TX can be effectively used in BMI matrix, thereby providing reliable source material for the design of high-performance BMI resins that meet various application scenarios.
ISSN:1385-8947
1873-3212
DOI:10.1016/j.cej.2021.131634