Hierarchical engineering of boron nitride nanosheets to reveal ignition mode of action of epoxy

Zhi Li; Xiao‐Die Zhang; Jifeng Li; Zi‐Mou Ran; Sara Isabel Montero Lira; De‐Yi Wang

doi:10.1002/pat.6011

journal article Feb 23, 2023

Hierarchical engineering of boron nitride nanosheets to reveal ignition mode of action of epoxy

Zhi Li

Xiao‐Die Zhang Jifeng Li Zi‐Mou Ran Sara Isabel Montero Lira De‐Yi Wang

Polymers for Advanced Technologies Vol. 34 No. 6 pp. 1817-1828 · Wiley

View at Publisher Save 10.1002/pat.6011

Abstract

AbstractIn the manuscript, the coupled parameters to influence ignition mode of charring epoxy thermoset (EP) were systematically revealed by comparative experiments and simulation. Aiming to incorporating physical variables of heat conductivity (k), specific heat capacity (c) and chemical variable of thermal‐oxidation degradation, thermally exfoliated boron nitride nanosheets were hierarchically engineered via bioinspired manipulation. Ignition time (tig) was studied in cone calorimeter test, accompanied by the in situ temperature detection and finite‐element temperature simulation. The comparative study disclosed that the physical parameters (k and c) exerted a dominant effect at the heating stage. The thermal‐oxidation degradation took effect at the determination of composition and concentration of volatiles (pertaining to ignition temperature). The pyrolyzed depth served as the bridge to connect physical and chemical aspects. The study revealed the dominant role of physical parameters in determining tig compared with chemical parameters. The concentration of volatiles was more critical than their composition. The multi‐scale structure and property relationship was established. Additionally, the changed oxygen atmospheres exerted a significant impact on piloted ignition via tailoring chemical factor. In perspective, the work will reveal a more clear understanding and modulation of ignition safety via a rational nanoscale strategy toward thermosetting polymers.

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Details

Published: Feb 23, 2023
Vol/Issue: 34(6)
Pages: 1817-1828
License: View

Authors

Z

Zhi Li

China‐Spain Collaborative Research Center for Advanced Materials (CSCRC), School of Materials Science and Engineering, Chongqing Jiaotong University Chongqing China; IMDEA Materials Institute Madrid Spain; Universidad Politécnica de Madrid Madrid Spain

X

Xiao‐Die Zhang

China‐Spain Collaborative Research Center for Advanced Materials (CSCRC), School of Materials Science and Engineering, Chongqing Jiaotong University Chongqing China

J

Jifeng Li

IMDEA Materials Institute Madrid Spain

Z

Zi‐Mou Ran

China‐Spain Collaborative Research Center for Advanced Materials (CSCRC), School of Materials Science and Engineering, Chongqing Jiaotong University Chongqing China

S

Sara Isabel Montero Lira

IMDEA Materials Institute Madrid Spain

D

De‐Yi Wang

IMDEA Materials Institute Madrid Spain; Universidad Francisco de Vitoria Pozuelo de Alarcón Madrid Spain

Cite This Article

Zhi Li, Xiao‐Die Zhang, Jifeng Li, et al. (2023). Hierarchical engineering of boron nitride nanosheets to reveal ignition mode of action of epoxy. Polymers for Advanced Technologies, 34(6), 1817-1828. https://doi.org/10.1002/pat.6011

Hierarchical engineering of boron nitride nanosheets to reveal ignition mode of action of epoxy

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