BODIPY coated on MXene nanosheets for improving mechanical and fire safety properties of ABS resin

紧身衣 材料科学 阻燃剂 碳化 极限抗拉强度 复合材料 锥形量热计 极限氧指数 化学工程 烧焦 热解 扫描电子显微镜 量子力学 荧光 物理 工程类
作者
San‐E Zhu,Fen-Dou Wang,Junjie Liu,Lili Wang,Cheng Wang,Anthony Chun Yin Yuen,Timothy Bo Yuan Chen,Imrana I. Kabir,Guan Heng Yeoh,Hongdian Lu,Wei Yang
出处
期刊:Composites Part B-engineering [Elsevier BV]
卷期号:223: 109130-109130 被引量:91
标识
DOI:10.1016/j.compositesb.2021.109130
摘要

Acrylonitrile-butadiene-styrene (ABS) resin is a commonly used engineering thermoplastic. Nevertheless, the fire toxicity hazards (HCN, NOx, NH3 and CO) generated from the combustion of ABS remains a major concern, especially in building fire scenarios. To address this issue, boron dipyrromethene (BODIPY) modified MXene (Ti3C2Tx) nanosheets were prepared and utilized as a flame retardant for ABS. The loading of 0.5 wt% BODIPY-MXene resulted in the uniform dispersion in ABS. Accordingly, the tensile strength, Young's modulus and elongation at break of ABS/BODIPY-MXene0.5 were improved by 27.8%, 18.6% and 17.9% respectively compared to neat ABS, suggesting the enhanced mechanical properties. The limiting oxygen index (LOI) value was increased from 19.5% for neat ABS to 21.5% and 23.5% for ABS/BODIPY-MXene0.5 and ABS/BODIPY-MXene2.0 benefitted from the rapid carbonization. The cone calorimeter coupled with FTIR analysis showed that the reductions in peak heat release rate (−24.5%), peak smoke production rate (−18.4%), peak concentration of HCN (−33.5%), NO (−22.0%), N2O (−46.6%), NH3 (−76.0%) and CO (−28.8%) were achieved by incorporating 0.5 wt% BODIPY-MXene to ABS in comparison with pure ABS. The improved fire safety properties were primarily attributed to the excellent barrier, free radical capture, and catalytic carbonization effect of BODIPY-MXene nanosheets within ABS matrix.
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