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首页> 外文期刊>Environmental Science & Technology >Dynamic Analysis of Particle Emissions from FDM 3D Printers through a Comparative Study of Chamber and Flow Tunnel Measurements
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Dynamic Analysis of Particle Emissions from FDM 3D Printers through a Comparative Study of Chamber and Flow Tunnel Measurements

机译：通过腔室和流动隧道测量比较研究对FDM 3D打印机粒子排放的动态分析

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摘要

Ultrafine particle emissions originating from fused deposition modeling (FDM) three-dimensional (3D) printers have received widespread attention recently. However, the obvious inconsistency and uncertainty in particle emission rates (PERs, #/min) measured by chamber systems still remain, owing to different measurement conditions and calculation models used. Here, a dynamic analysis of the size-resolved PER is conducted through a comparative study of chamber and flow tunnel measurements. Two models to resolve PER from the chamber and a model for flow tunnel measurements were examined. It was found that chamber measurements for different materials underestimated PER by up to an order of magnitude and overestimated particle diameters by up to 2.3 times, while the flow tunnel measurements provided more accurate results. Field measurements of the time-resolved particle size distribution (PSD) in a typical room environment could be predicted well by the flow tunnel measurements, while the chamber measurements could not represent the main PSD characteristics (e.g., particle diameter mode). Secondary aerosols (>30 nm) formed in chambers were not observed in field measurements. Flow tunnel measurements were adopted for the first time as a possible alternative for the study of 3D printer emissions to overcome the disadvantages in chamber methods and as a means to predict exposure levels.
机译：源自融合沉积建模（FDM）三维（3D）打印机的超细粒子排放最近受到了广泛的关注。然而，由于使用的测量条件和使用的计算模型，仍然存在腔室系统测量的颗粒排放速率（PIS，＃/ min）中的明显不一致和不确定性。这里，通过腔室和流动隧道测量的比较研究进行大小分辨的每个分辨率的动态分析。检查了从腔室中解析的两个模型和用于流隧道测量的模型。结果发现，对于多个幅度和高估粒径高达2.3倍，不同材料的腔室测量值高达2.3倍，而流动隧道测量提供了更准确的结果。通过流动隧道测量可以预测典型的房间环境中的时间分辨粒度分布（PSD）的现场测量，而腔室测量不能代表主PSD特性（例如，粒径模式）。在现场测量中未观察到在腔室中形成的二次气溶胶（> 30nm）。首次采用流动隧道测量作为研究3D打印机排放的可能替代方案，以克服腔室方法中的缺点以及预测曝光水平的手段。

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  • 来源
    《Environmental Science & Technology》 |2020年第22期|14568-14577|共10页
  • 作者

    Shirun Ding; Man Pun Wan; Bing Feng Ng;

  • 作者单位

    Singapore Centre for 3D Printing and School of Mechanical and Aerospace Engineering Nanyang Technological University Singapore 639798;

    School of Mechanical and Aerospace Engineering Nanyang Technological University Singapore 639798;

    Singapore Centre for 3D Printing and School of Mechanical and Aerospace Engineering Nanyang Technological University Singapore 639798;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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  • 正文语种 eng
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