期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 608, 期 -, 页码 853-863出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2021.10.056
关键词
Ternary integrated; Boron nitride nanosheets; Fire safety; Epoxy
By in-situ decoration and chemical etching, ternary integrated boron nitride nanosheet nanoparticles were prepared, improving the thermal stability of epoxy resin and reducing fire hazards. The nano barrier effect and catalytic activity help suppress the release of combustible volatile products.
In order to improve the fire safety of epoxy resin, ZIF-8 nanoparticle in-situ decorated boron nitride nanosheet (BN-OH/ZIF-8) is fabricated via self-assembly method and then ternary integrated BN-OH/ ZIF-8/PA hybrids are prepared through the chemical etching effect of phytic acid. FTIR, XRD, XPS, TEM and TGA measurements are used to characterize the structure and morphology of the nanohybrids. The researches show that BN-OH/ZIF-8/PA not only uniformly distributed in EP matrix, but also improve the thermal stability of EP. The peak heat release rate, peak smoke production rate, total smoke produc-tion values, the fire growth index and peak CO production rate obtained from cone test are significantly decreased, demonstrating the reduction of the fire hazards of EP composites containing BN-OH/ZIF-8/PA. The nano barrier effect and catalytic activity of BN-OH/ZIF-8/PA may be conducive to suppress the release of combustible volatile products and heat, facilitate the formation of graphitized carbon layer, and protect matrix from flame damage. The ternary integrated method developed in this study explores a new way to improve the flame retardant properties of EP, thereby promoting its application range. (c) 2021 Elsevier Inc. All rights reserved.
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