Description Detail

Vol.27, No.1(2020-2)(21-31) 
A Study on Taiwan Masks test the air filtration function
台灣口罩之檢測分析
D A. Chen﹐Y H. Lin﹐W H. Hsing
陳德安、林永浩、邢文灝
This study tested Taiwan’s respirators with the focus on medical masks,activated carbon masks and N95 respirators. The tested criterias were: basis weight, pressure point area coverage 、breathing device resistancy, permeabilit, middle layer gap density and fiber diameter, water repellent, micro particle filtration efficiency and filtration efficiency (pm0.3, pm 2.5,pm 10 particles). carbon activated masks have base weight range from 42 to 50g.Most of the masks have non-woven fabric for the outer layer (weighs between14 to 52g) , meltblown for the middle layer (weighs between 20 to 46g) with gap density of 0.12to3.46% and fiber diameter of 2.53to3.87μm, and thermal bond for the inner layer (weighs between 19 to 32g). Pattern indent coverage for both outer layer and inner layer is 13 to 37%. For N95 respirators, the weights for support layer ranges from 71 to 86g, basis weights ranges from 45 to 266g, breathing device resistant ranges from 53 to 168Pa, and a permeability ratings of 20 to 102 Pa. Medical grade masks have water repellent rating of three or higher, contact angle ranges from 112 to 124 degree, after filtration concentration of 7to429μg/mm^3 for PM 2.5, and after filtration concentration of 8 to 715μg/m^3 for PM10. 69% masks tested met the PM 2.5 of the, and micro particle filtration rate of 12to100%. 69% of the masks tested met the required qualifications.
本研究探討台灣市售口罩的物性檢測分析,主要測定了三類口罩:醫用口罩、活性碳口罩、N95系列口罩,並分別針對口罩的基重、壓點面積覆蓋率、中層孔隙率與纖維直徑、呼吸氣阻抗、外層撥水性、空氣粉塵PM2.5及、PM10過濾效率、微米顆粒物過濾效率進行測試。口罩外層一般用紡黏熱壓不織布,基重範圍為14~52克/平方公尺,中層為熔噴不織布,基重範圍為20~46克/平方公尺,孔隙率為0.12~3.46%,纖維直徑為2.53~3.87μm,內層為PP熱壓不織布,基重範圍為19~32克/平方公尺,外層與內層壓紋點覆蓋率為13~37%,活性碳碳層基重範圍為42~50克/平方公尺,N95系列支撐層基重範圍為71~86克/平方公分,總基重為45~266克,呼吸氣阻抗範圍為53~168Pa,醫用口罩外層接觸角角度範圍為112~124度,對於PM2.5的過濾效率為24~98%,;過濾測定顆粒物濃度為7~429μg/m^3,對於PM10的過濾效率為31~98%;過濾測定顆粒物濃度為8~715μg/m^3,根據GB/T32610-2016日常防護型口罩技術規範口罩為須過濾到75μg/m^3濃度以下,14家有5家不合格。微米顆粒物過濾效率為12~100%。根據CNS14755拋棄式防塵面罩為標準進行測試在空氣流量85±4L/min下測試,D1級為80~95%、呼吸氣阻抗190PA以下,13家有4家不合格。NIOS 42 CFR 84 呼吸防護用品標準認證的口罩性能,N95為過濾效率達到95%以上,吸氣阻抗為350Pa以下、呼氣阻抗為250Pa以下,N95口罩皆符合標準。
medical mask ,carbon masks ,N95 respirators ,PM2.5 ,efficiency of filtration
醫用口罩、活性碳口罩、N95口罩、PM2.5、過濾效率
Year Volume
2020 27.1 | 27.2
27.3 |
2019 26.1 |
2018 25.1 |
2017 24.1 | 24.2
24.3 | 24.4
24.5 | 24.6
24.7 | 24.8
24.9 |
2016 23.1 | 23.2
23.3 | 23.4
23.5 | 23.6
23.7 | 23.8
2015 22.1 | 22.2
22.3 | 22.4
22.5 |
2014 21.1 | 21.2
21.3 |
2013 20.1 | 20.2
20.3 | 20.4
2012 19.1 | 19.2
19.3 | 19.4
2011 18.1 | 18.2
2010 17.4