随弃式防颗粒物口罩清洗方法实验研究

为延长高粉尘作业环境下随弃式防颗粒物口罩的使用时间,从而减少资源消耗、提高经济性,通过在去离子水、无水乙醇以及梯度体积分数乙醇溶液环境下使用40 kHz中低频率超声波清洗和浸泡清洗的方法对随弃式防颗粒物口罩材料进行实验,得到最优清洗方式以及清洗条件。结果表明:随弃式防颗粒物口罩在40%体积分数乙醇溶液环境下使用中低频率超声波清洗后仍具有较低阻力和较好过滤效率,满足再次使用的标准;中低频超声波对口罩清洗效果在25～55℃温度范围和10～30 min时间范围内没有明显区别,从经济角度考虑可以采用25～35℃,10 min的条件进行清洗。

Experimental Study on Cleaning Method for Disposable Air-purifying Particle Respirator

In order to extend the life of disposable air-purifying particle respirator in high dust operation environment so to reduce resource consumption and to improve the economy,this passage suggests the optimal cleaning method and cleaning conditions by using deionized water,ethanol,and a gradient of ethanol solution as cleaning medium and 40 kHz low frequency ultrasonic cleaning and soak cleaning method.Results show that with disposable air-purifying particle respirator in 40%ethanol solution environment,after low frequency ultrasonic cleaning,the respirator still has an acceptable respiratory resistance and a good filtering efficiency and meets the standard,in the 25~55℃temperature range and the 10~30 minutes range,there is no significant differences on the effects of low frequency ultrasonic cleaning,thus from an economic view,the optimal cleaning condition would be the 25~35℃temperature range and 10 minutes.