3D打印正在造福人类社会,但是,由于3D打印需要进行高温加热原料,因此会产生挥发性有机物(VOCs),如丙烯酸酯类VOCs,其对人类、动植物以及环境都有不同程度的危害,因此亟需高效净化技术。通过碳酸钙和碳酸钠改性活性炭(AC),系统表征其结构并评估对3D打印树脂中丙烯酸酯类VOCs的吸附性能。结果表明:CaCO3改性活性炭(AC-2)表面形成不规则的CaCO3颗粒,同时保留孔隙完整性,比表面积达1080.48m2/g,较原始活性炭(AC-0)提升59.8%;其表面Ca2+负载与适度氧化协同优化吸附位点。动态吸附实验显示,AC-2对VOCs的穿透时间(20min)和饱和时间(68min)均最优,较AC-0提升185%与89%。改性剂活性炭可显著提高活性炭对丙烯酸酯类VOCs的吸附性能,有望应用于3D打印过程中丙烯酸酯类VOCs的吸附。
3D printing technology offers significant societal benefits.However,the high-temperature processing of raw materials during printing releases volatile organic compounds (VOCs),such as acrylates,which pose risks to human health,flora and fauna,and the environment.Efficient purification technologies are thus urgently needed.In this study,activated carbon (AC) was modified with calcium carbonate and sodium carbonate.Its structure was systematically characterized,and its adsorption performance for acrylate-based VOCs emitted from 3D printing resins was evaluated.Results demonstrated that CaCO3-modified activated carbon (AC-2) formed irregular CaCO3 particles on its surface while preserving pore integrity.The specific surface area of AC-2 reached 1080.48m2/g,representing a 59.8% increase compared to pristine activated carbon (AC-0).This enhancement was attributed to the synergistic optimization of adsorption sites through Ca2+ loading and moderate surface oxidation.Dynamic adsorption experiments revealed that AC-2 achieved superior breakthrough time (20min) and saturation time (68min) for VOCs,exceeding AC-0 by 185% and 89%,respectively.The modified activated carbon significantly improved the adsorption capacity for acrylate-based VOCs and held promise for application in VOC abatement during 3D printing processes.
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基金资助
中央高校基本科研基金项目(104972025YJS0062)
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