Allyl 2,4,6-tribromophenyl ether (TBP-AE) is a flame retardant that is added to plastics to improve their fire resistance. This kind of additive is hazardous to both human health and the environment. As any other BFRs, TBP-AE resists photo-degradation in the environment and hence materials laden with TBP-AE are to be dibrominated to avoid environmental pollution. Mechanochemical degradation of TBP-AE is a promising approach with potential industrial applications since it does not require high temperatures nor it generates any secondary pollutants. A planetary ball milling simulation experiment was designed to study TBP-AE's mechanochemical debromination. To report products from the mechanochemical process, a variety of characterization techniques were used. The characterization methods included gas chromatography-mass spectrometry (GC-MS), X-ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), and scanning electron microscopy (SEM) with energy-dispersive X-ray analysis (EDX). The effects of various co-milling reagent types, co-milling reagent concentrations with raw material, time, and revolution speed on mechanochemical debromination efficiency have been thoroughly investigated. The Fe/Al2O3 mixture entails the highest debromination efficiency of 23%. However, when using a Fe/Al2O3 mixture, neither the reagent concentration nor the revolution speed influenced the debromination efficiency. In case of using only Al2O3, the next viable reagent, it was revealed that while increasing the revolution, speed improved debromination efficiency to a certain point, and increasing it any further left the debromination efficiency unchanged. In addition, the results showed that an equal mass ratio of TBP-AE to Al2O3 promoted degradation more than an increase in the ratio of Al2O3 to TBP-AE. The addition of ABS polymer largely inhibits the reaction between Al2O3 and TBP-AE, which hindered alumina's ability to capture organic bromine, causing a significant decrease in the debromination efficiency when model of waste printed circuit board (WPCB) is considered.

中文翻译：

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烯丙基 2,4,6-三溴苯醚 (TBP-AE) 的机械化学脱溴：操作条件的优化。

烯丙基 2,4,6-三溴苯醚 (TBP-AE) 是一种阻燃剂，添加到塑料中可提高其耐火性。这种添加剂对人体健康和环境都有害。与任何其他 BFR 一样，TBP-AE 可以抵抗环境中的光降解，因此含有 TBP-AE 的材料需要进行二溴化以避免环境污染。TBP-AE 的机械化学降解是一种具有潜在工业应用前景的方法，因为它不需要高温，也不会产生任何二次污染物。设计了行星球磨模拟实验来研究TBP-AE的机械化学脱溴性能。为了报告机械化学过程中的产物，使用了多种表征技术。表征方法包括气相色谱-质谱联用仪 (GC-MS)、X 射线粉末衍射 (XRD)、傅里叶变换红外光谱 (FT-IR) 和带有能量色散 X 射线分析的扫描电子显微镜 (SEM)。 EDX）。深入研究了各种共研磨试剂类型、共研磨试剂浓度与原料、时间和转速对机械化学脱溴效率的影响。Fe/Al2O3 混合物的脱溴效率最高为 23%。然而，当使用Fe/Al2O3混合物时，试剂浓度和转速均不影响脱溴效率。在仅使用Al2O3（下一个可行的试剂）的情况下，结果表明，在增加转数的同时，速度将脱溴效率提高到一定程度，并且进一步增加会使脱溴效率保持不变。此外，结果表明，等质量比的TBP-AE与Al2O3比增加Al2O3与TBP-AE的比例更能促进降解。ABS聚合物的添加很大程度上抑制了Al2O3和TBP-AE之间的反应，这阻碍了氧化铝捕获有机溴的能力，导致当考虑废印刷电路板（WPCB）模型时脱溴效率显着下降。