空气湿度对自吸过滤式口罩过滤性能的影响研究
发布时间：2019-01-19 12:06
【摘要】：口罩是阻止颗粒物进入人体的有效防护用品,其性能优劣直接影响着佩戴人员的健康与安全。采用国标建议的呼吸阻力实验装置与自制的过滤效率实验装置,对自吸过滤式KN90,KN95系列口罩的呼吸阻力与不同相对湿度下的分级过滤效率进行实验研究。结果表明:所研究的6种口罩的呼气阻力与吸气阻力值不仅满足国标要求,而且满足佩戴舒适性的要求;在同一风速下,气流相对湿度的增加,使2种口罩对粒径为1μm以下颗粒物的过滤效率降低,对1μm以上颗粒物的过滤效率没有影响。
[Abstract]:Mask is an effective protective device to prevent particulate matter from entering human body, and its performance directly affects the health and safety of the wearer. The respiratory resistance of self-suction KN90,KN95 series masks and the filtration efficiency of different relative humidity were studied by using the experimental apparatus of respiratory resistance and self-made filter efficiency. The results show that the expiratory resistance and inspiratory resistance of the six masks not only meet the requirements of national standard, but also meet the requirement of wearing comfort. Under the same wind speed, the increase of the relative humidity of the air flow reduced the filtration efficiency of the two masks for particles below 1 渭 m in diameter, but had no effect on the filtration efficiency of the particles above 1 渭 m.
【作者单位】： 东北大学滤料检测中心;
【基金】：国家十二五科技支撑项目(2015BAK40B00) 国家十三五重大专项(2017YFC0211801,2016YFC0801704,2016YFC0203701,2016YFC0801605,2017YFC0211800)
【分类号】：X924.4
，
本文编号：2411364
[Abstract]:Mask is an effective protective device to prevent particulate matter from entering human body, and its performance directly affects the health and safety of the wearer. The respiratory resistance of self-suction KN90,KN95 series masks and the filtration efficiency of different relative humidity were studied by using the experimental apparatus of respiratory resistance and self-made filter efficiency. The results show that the expiratory resistance and inspiratory resistance of the six masks not only meet the requirements of national standard, but also meet the requirement of wearing comfort. Under the same wind speed, the increase of the relative humidity of the air flow reduced the filtration efficiency of the two masks for particles below 1 渭 m in diameter, but had no effect on the filtration efficiency of the particles above 1 渭 m.
【作者单位】： 东北大学滤料检测中心;
【基金】：国家十二五科技支撑项目(2015BAK40B00) 国家十三五重大专项(2017YFC0211801,2016YFC0801704,2016YFC0203701,2016YFC0801605,2017YFC0211800)
【分类号】：X924.4
，
本文编号：2411364
本文链接：https://www.wllwen.com/kejilunwen/anquangongcheng/2411364.html
