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来自二氧化碳激光切割烯酸塑料的排放的表征

Alejandro Munoz¹, Jacob Schmidt², I H Mel Suffet¹

¹Department of Environmental Health Sciences, Fielding School of Public Health, University of California-Los Angeles, Los Angeles, California 90095-1735, United States.

Journal of chemical health & safety

|July 28, 2023

概括

激光切割烯酸板在盖子打开时释放纳米塑料和微塑料. 包括甲基甲酸在内的排放在切割后至少持续20分钟.

科学领域:

环境科学环境科学
材料科学材料科学材料科学
化学工程是化学工程的重要组成部分.

背景情况:

二氧化碳 (CO2) 激光切割机广泛用于各种材料.
激光切割机中的烟雾抽取器可能无法捕获切割完成后释放的所有空气中的排放.

研究的目的:

为了研究激光切割烯酸板的颗粒物和气体排放.
为了量化空气中的污染物在打开激光切割器盖子时释放出来.

主要方法:

实时监测颗粒物度和大小分布.
Tsai扩散采样器用于收集聚碳酸膜和TEM网格上的样本.
气色谱-质谱 (GC-MS) 用于气体分析和红外空气分析仪用于量化.

主要成果:

在盖子打开时显著释放纳米塑料颗粒 (15.4-86nm) 和微塑料.
颗粒物度在切割后至少增加了20分钟.
检测到低水平的甲基甲基酸盐,接近检测极限.

结论:

激光切割烯酸产生危险的空气中纳米塑料和微塑料.
在切割过程后,排放仍然存在,这可能会造成潜在的吸入风险.
需要进一步的研究来评估这些排放对健康的长期影响.

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