材料科学
氮化硼
环氧树脂
氨硼烷
复合材料
剥脱关节
化学工程
极限抗拉强度
聚醚酰亚胺
催化作用
烧焦
纳米技术
热解
石墨烯
聚合物
化学
有机化学
工程类
氢气储存
合金
作者
Xiao-Die Zhang,Zhi Li,Lin-Yun Jiang,Qing-Qing Bi,Hongfang Li,Jiacheng Wang,Jimena de la Vega,De‐Yi Wang
标识
DOI:10.1016/j.apsusc.2022.156316
摘要
Aiming to strengthening fire retardancy of epoxy resin without sacrificing the mechanical performance, boron nitride (BN) was synchronously stripped and activated using a bio-based tannic acid (TA)-assisted milling strategy, followed by featuring osteoarticular-inspiring surface engineering of interlocking structure. Experimental and DFT virtual evaluation evidenced the effectiveness of TA-assisted upscaling milling strategy by the vigorous affinity between boron (BN) and oxygen atom (TA). A spatially adjustable piling of lamellar NiCo-LDH on the globally activated BN (fBN) was manipulated using an exclusive metal–organic framework (MOF)-derived etching-conversion mode. 6 wt% targeted [email protected] imparted epoxy with UL-94 V-1 rating and reduced peak smoke production rate by 30.0 %. A totally catalytic conversion of toxic CO by interface-located NiCo-LDH was observed. An insightful fire-safe mechanism investigation via dynamic and static analysis demonstrated the formation of compact and continuous char structure with a higher polyaromatic degree via the interface-charring catalysis. Additionally, the tensile strength and impact toughness were unconceivably enhanced by 54.2 % and 127.0 % respectively, which was presumably evidenced by in-situ formed osteoarticular-inspiring interlocking structure. In parallel, EP/[email protected] presented a 20 °C increased glass transition temperature and marginally enhanced thermal conductivity. Prospectively, the surface engineering via osteoarticular-inspiring interlocking coupled with bio-based exfoliation exploit a novel roadmap for multifunctional nano-reinforcer.
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