Air pollutant emissions from multi jet fusion, material-jetting, and digital light synthesis commercial 3D printers in a service bureau
نویسندگان
چکیده
As additive manufacturing becomes more prevalent in industrial facilities, so does human interaction with these machines. In this study, we characterized the size-resolved concentrations of particulate matter (PM, from ≈ 11 to 20,000 nm size) and volatile organic compounds (VOC) resulting a material-jetting (Projet 5500X), multi jet fusion (HP MJF 4200), photopolymerization (Carbon 3D continuous liquid interface production). During all processes, PM were below OSHA limits ultrafine (PM0.1) well levels commonly observed for fused deposition modeling printers. total compound during printing close background HP printer post processing station. However, mean particle size powder used (PA 12) was above upper detection limit instrument (20 μm). Carbon VOC highest part processing. Cyclic emissions Projet 5500X suggested higher cooling fan activity. analysis revealed high ink solvents (2-Pyrrolidinone Triethylene glycol), potential exposure fluorinated photoresin VOCs post-processing, photo-resin printing. This study indicates that proper exhaust facility air exchange can therefore particular attention building design ventilation system should be taken into consideration facilities mitigate associated health risks.
منابع مشابه
Tunable Digital Material Properties for 3d Voxel Printers
Digital materials are composed of many discrete voxels placed in a massively parallel layer deposition process, as opposed to continuous (analog) deposition techniques. We explore the material properties attainable using a voxel-based freeform fabrication process and simulate how the properties can be tuned for a wide range of applications. By varying the precision, geometry, and material of th...
متن کاملImpact of biofuels on air pollutant emissions from road vehicles
Assignor This report contains the results from research carried out under two separate contracts: BOLK: Beleidsgericht Onderzoeksprogramma Lucht en Klimaat 2008-2009, sponsored by the Dutch Ministry of VROM and coordinated by the Netherlands Environmental Assessment Agency MNP (contract nr. M/500146/01/TNO and M/500146/01/CE); Literatuurstudie naar de emissies van biobrandstoffen en andere alte...
متن کاملsynthesis of sulfides from alcohols and thiols in solvent-freeconditions and deoxygenation of sulfoxides
کاتالیست یک سنتز جدید برای تیواترها توصیف شده است. واکنش الکل ها با آریل، هتروآریل و آلکیل تیو ل ها درحضور 1،3،5- تری آزو- 2،4،6- تری فسفرین-2،2،4،4،6،6 هگزاکلراید ((tapc به عنوان یک کاتالیست موُثر، بازده های خوب تا عالی از تیواترها را حاصل می کند. علاوه براین، واکنش تحت شرایط بدون فلز و بدون حلال پیش می رود، بنابراین یک مکمل جالب برای روش های شناخته شده سنتز تیواترها ارائه می دهد. یک مکانیسم ا...
15 صفحه اولAir Pollutant Emissions from Coal-fired Power Plants. 2.
In order to investigate the factual air pollutant emissions from Henan’s power sector in 2010, SO2, NOx and PM emissions from 24 generating sets from 15 coal-fired power plants have been measured. It is shown that SO2 emission values from 22 of 24 generating sets conform to the requirements, which is causing by the high performance of the flue gas desulfurization system. Much higher NOx emissio...
متن کاملProjections of air pollutant emissions in China in 2020
Introduction Conclusions References
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Building and Environment
سال: 2021
ISSN: ['0360-1323', '1873-684X']
DOI: https://doi.org/10.1016/j.buildenv.2021.108008