为了研究芳纶(PMIA)纳米纤维膜在高温烟尘环境下的应用,采用静电纺丝技术制备了PMIA静电纺丝纳米纤维膜,并探讨了其在高温及酸碱环境下的过滤性能和力学性能。结果表明:经正交试验优化后的最佳工艺参数为:PMIA浓度12%、纺丝接收距离12cm及纺丝电压25kV。所制备的PMIA纳米纤维膜的平均直径为312.44nm,对PM0.3颗粒的过滤效率高达98.45%,压降为141.57Pa,品质因子(QF)为0.0294Pa-1,断裂强度达到16.015MPa,表现出优异的过滤和力学性能。此外,该PMIA纳米纤维膜显示出良好的耐高温和耐酸碱能力,具有在高温烟气超细颗粒过滤领域应用的潜力。这些发现为未来开发高性能耐高温烟尘纳米过滤材料提供了重要依据。
To investigate the application of aramid (PMIA) nanofiber membranes in high-temperature and dusty environments,this study prepared PMIA nanofiber membranes using electrospinning technology.Their filtration and mechanical properties under high-temperature and acid-alkali conditions were investigated.The results indicated that the optimal process parameters were as follows:PMIA concentration of 12%,spinning receiving distance of 12cm,and spinning voltage of 25kV.The average diameter of the prepared PMIA nanofiber membrane was 312.44nm,with a filtration efficiency of 98.45% for PM0.3 particles,a pressure drop of 141.57Pa,a quality factor (QF) of 0.0294Pa-1,and a breaking strength of 16.015MPa,indicating outstanding filtration and mechanical performance.Furthermore,the PMIA nanofiber membrane exhibited excellent resistance to high temperatures,and acid-alkali environments,demonstrating potential for application in the ultrafine particle filtration in high-temperature flue gas.These findings provide a critical foundation for the future development of high-performance,high-temperature resistant dust nanofiltration materials.
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基金资助
山西省高等学校科技创新计划项目(2023L340);浙江省自然科学基金项目(LQ23E040005);浙江省重大科技项目(2020C03089);国家科技重大专项项目(2022YFC2503200和2022YFC2503201)
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