后处理工艺对抗静电滤料性能的影响  

comEffect of post-treatment process on performance of antistatic filter materials

作　　者：柳静献[1] 任磊 Liu Jingxian;Ren Lei(School of Resources and Civil Engineering,Northeastern University,Shenyang 110819,Liaoning,China)

机构地区：[1]东北大学资源与土木工程学院,辽宁沈阳110819

出　　处：《产业用纺织品》2024年第7期19-26,共8页Technical Textiles

基　　金：国家十四五重点研发计划(2022YFC2503201);国家自然科学基金(52174215);辽宁省兴辽人才计划(XLYC2002091);辽宁省揭榜挂帅科技攻关专项(2021JH1/10400023);浙江省重点研发计划(2020C03089)。

摘　　要：选择基布中嵌织导电纱线的基布导电型和面层中混入导电纤维的面层导电型2种典型抗静电滤料作为基材,进行聚四氟乙烯(PTFE)乳液浸渍处理和PTFE微孔膜覆膜处理,得到面密度和厚度均匀的复合滤料。再基于电阻率、静电压衰减时间及摩擦带电电压3项指标,从静电荷的消散及积聚2个角度,探究了后处理工艺对抗静电滤料性能的影响。试验结果表明:浸渍处理后,滤料抗静电性能提升,2种滤料的迎尘面表面电阻率和体积电阻率均降低且降幅小于1个数量级,基布导电型滤料和面层导电型滤料的迎尘面静电压半衰期分别由0.40 s、0.23 s缩短至0.38 s、0.20 s,摩擦时间为60 s时摩擦带电电压分别由1043 V、596 V减小至668 V、67 V。覆膜处理后,滤料抗静电性能下降,基布导电型滤料迎尘面表面电阻率升高且升幅为1个数量级、体积电阻率升高但升幅小于1个数量级,面层导电型滤料迎尘面表面电阻率和体积电阻率均升高且升幅为4个数量级,基布导电型滤料和面层导电型滤料迎尘面静电压半衰期分别由0.40 s、0.23 s延长至0.53 s、0.77 s,摩擦时间为60 s时摩擦带电电压分别由1043 V、596 V增大至1952 V、920 V。Two typical antistatic filter materials,the conductive type of the base cloth embedded with conductive yarns and the conductive type of the surface layer mixed with conductive fibers,were selected as the substrate,and polytetrafluoroethylene(PTFE)emulsion impregnation treatment and PTFE microporous film coating treatment were carried out to obtain the composite filter material with uniform surface density and thickness.Then based on electrical resistivity,static voltage decay time and friction charged voltage 3 indexes,the effects of post-treatment process on the properties of antistatic filter materials were investigated from the perspectives of dissipation and accumulation of static charges.The experimental results showed that,the antistatic performance of the filter material increased after impregnation treatment.The surface resistivity and volume resistivity of the dust-facing surface of the two kinds of filter materials decrease by less than one order of magnitude.The static voltage half-life of the dust-facing surface of the substrate conductive filter material and the surface conductive filter material was shortened from 0.40 s and 0.23 s to 0.38 s and 0.20 s respectively.The friction charged voltage decreased from 1043 V and 596 V to 668 V and 67 V respectively when the friction time was 60 s.The experimental results also showed that,the antistatic performance of the filter material decreased after film coating treatment.The surface resistivity of the dust-facing surface of the substrate conductive filter material increased by one order of magnitude,and the volume resistivity increased by less than one order of magnitude.The surface resistivity and volume resistivity of surface conductive filter material increasd by 4 orders of magnitude.The static voltage half-life of the dust-facing surface of the substrate conductive filter material and the surface conductive filter material was prolonged from 0.40 s and 0.23 s to 0.53 s and 0.77 s respectively.The friction charged voltage increased from 1043 V and 596

关 键 词：后处理工艺 浸渍处理 覆膜处理 抗静电滤料 表面电阻率 体积电阻率 静电压衰减时间 摩擦带电电压 

分 类 号：TS176[轻工技术与工程—纺织材料与纺织品设计] X964[轻工技术与工程—纺织科学与工程]