基于水刺复合的PPS/PTFE复合材料的结构和过滤性能  

Structure Characters and Filtration Performance of PPS/PTFE Composites Based on Hydroentanglement

作　　者：张恒 甄琪 康桂田 周真佳 张一风[1] 

机构地区：[1]中原工学院纺织学院 [2]中原工学院服装学院 [3]郑州纺机工程技术有限公司 [4]河南省产业用纺织品行业协会

出　　处：《纺织导报》2019年第1期77-80,共4页China Textile Leader

基　　金：国家重点研发计划资助项目(2017YFB0309100);纺织服装产业河南省协同创新中心资助项目(2017CYY006);中原工学院青年人才创新能力基金项目(K2018QN011)

摘　　要：基于水刺加固的非织造复合材料依靠水射流的冲击作用而加固成形,水射流能量和水刺工艺是影响水刺非织造复合材料结构和过滤性能的主要因素。文章通过调整水刺工艺的关键参数,研究了水针能量和水刺工艺对非织造材料的结构和过滤性能的影响。结果表明,多层叠合的纤维网在水射流冲击作用下会相互柔性纠缠而形成梯度结构,样品的厚度和模态孔径随着水针能量和水刺压力的变化而不同;在其他条件不变的情况下,样品对2.5～10μm区间的细小颗粒物具有良好的拦截效率,过滤效率和过滤阻力随着水针能量的增大而增大。"梯度结构"PPS/PTFE非织造复合材料具有迂曲孔隙结构可能是其对2.5～10μm颗粒物进行有效拦截的关键。Spunlaced nonwoven composites are reinforced by the impact effect of water jets.Water jet energy and spunlace process are the main factors affecting the structure and filtration performance of nonwoven composites.By adjusting the key parameters of spunlace process,the effects of water needle energy and spunlace process on the structure and filtration performance of the nonwovens were studied.Results showed that,the multi-layer fiber webs will be entangled with each other and form a gradient structure under the impact effect of water jet.The thickness and modal aperture of the sample changed with the different arrangement of water needle energy and spunlace pressure.When other conditions remain unchanged,the samples have good interception efficiency for fine particles in the range of 2.5~10μm,and filtration efficiency and filtration resistance both increase as the water needle energy increases.And the tortuous pores of PPS/PTFE composite nonwovens with"gradient structure"may be the key to effective interception for 2.5~10μm particles.

关 键 词：水刺 非织造复合材料 工艺 过滤性能 

分 类 号：TS174.1[轻工技术与工程—纺织材料与纺织品设计]