摘要 研究了容尘试验前后电驻极、水驻极聚丙烯熔喷非织造布的形貌特征,探讨了在不同试验条件下两种驻极方式的熔喷布对盐性气溶胶颗粒物的过滤效率、气流阻力、透气性等指标的影响。结果表明:相比于电驻极熔喷布,水驻极熔喷布的内部纤维更细、孔隙更多、透气性更好,在同一气体流速下,过滤效率更高、气流阻力更低;随流速增加,两种熔喷布的过滤效率下降,其中水驻极熔喷布下降较少,对应的气流阻力较低;随叠加层数的增加,两种熔喷布的过滤效率和气流阻力同时增大,相同叠加层数下,水驻极熔喷布的气流阻力更低;容尘试验后,过滤效率可达100%,水驻极熔喷布的气流阻力更低,透气性更好。由此可见,相比于电驻极方式,水驻极是一种更优的驻极方式。 The morphologic characteristics of electric electret and water electret polypropylene meltblown nonwovens before and after the dust holding test were studied, and the filtration efficiency, airflow resistance, air permeability and other indicators of the two electret meltblown nonwovens on salt aerosol particles under different experimental conditions were studied. The results show that, compared with electric electret meltblown nonwovens, the water electret meltblown nonwovens has finer internal fibers, more pores,and higher air permeability. At the same flow rate, it has higher filtration efficiency and lower airflow resistance. With the increase of flow rate the filtration efficiency of the two types of meltblown nonwovens decreases, among which the water electret meltblown nonwovens decreases less and the corresponding airflow resistance is lower. With the increase of the number of superposed layers, the filtration efficiency and the airflow resistance increase simultaneously. Under the same number of layers, the airflow resistance of the water electret meltblown nonwovcns is lower. After the dust holding test, the filtration efficiency can reach100%, and the airflow resistance of the water electret meltblown nonwovens is lower and the air permeability is higher. It can be seen that compared with the electric electret method, the water electret is a better electret method.
机构地区 河南驼人医疗器械集团有限公司 河南省医疗器械检验所
出处 《合成纤维》 CAS 2021年第3期35-38,共4页 Synthetic Fiber in China
