薛婷婷;沈恒根;梁珍;邓文义;

• 1:东华大学环境科学与工程学院

摘要(Abstract)：

针对纤维细度、纤维横截面形状、面层后处理工艺对PM2.5的过滤效率及阻力的影响问题,分别选用1#面层含100%2.22 dtex PPS纤维经PTFE浸渍、2#面层含50%PPS细纤维不经PTFE浸渍、3#面层含50%PPS细纤维经PTFE浸渍、4#面层含50%PPS三叶形纤维不经PTFE浸渍、5#面层含50%PPS三叶形纤维经PTFE浸渍、6#面层PTFE覆膜、7#面层含50%PPS细纤维和50%PTFE超细纤维的7种PPS滤料进行过滤性能试验。在环境气溶胶中,采用清洁滤料进行过滤试验研究。结果表明,1 m/min风速下对PM2.5的过滤效率从大到小为6#(81%)、7#(80%)、3#(76%)、5#(72%)、1#(63%)、2#(47%)、4#(41%),各因素中PTFE乳液浸渍后处理工艺的影响最为显著,面层纤维采用细纤维截面设计和三叶形截面设计都能有效增加滤料对PM2.5的过滤效率。过滤阻力方面,6#覆膜滤料随过滤风速增大阻力迅速上升;其他6种滤料的阻力较接近,上升缓慢。过滤品质因数Q值方面,相对于常规滤料,面层中混入细纤维或三叶形纤维滤料的Q增大;提高面层中细纤维比例,也能使Q增大;覆膜滤料效率虽高,但阻力较大,Q最小。

关键词(KeyWords)： 环境工程学;PPS滤料;织物构造;过滤PM2.5特性;阻力特性

Abstract:

Keywords:

基金项目(Foundation): 国家科技支撑计划项目(2012BAJ02B07-04)

作者(Authors): 薛婷婷;沈恒根;梁珍;邓文义;

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