梯度结构的PE/PP皮芯纤维空气滤料性能研究
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摘要
以不同线密度的PE(聚乙烯)/PP(聚丙烯)皮芯纤维为原材料形成单层纤网,然后使用不同梯度结构将2～3层单层纤网叠合形成复合纤网,再对复合纤网进行热风黏合加固及电晕驻极处理得到PE/PP皮芯纤维空气滤料,并对其过滤性能、容尘量及静电衰减性能进行测试。结果显示:由主体成分为2.0 dtex PE/PP皮芯纤维的单层纤网作为上、下表层,主体成分为6.2 dtex PE/PP皮芯纤维的单层纤网作为中间层所形成的PE/PP皮芯纤维空气滤料的综合性能最优,包括良好的过滤效率和静电衰减性能及较低的过滤阻力,表明PE/PP皮芯纤维空气滤料具有良好的应用潜力。
PE(polyethylene)/PP(polypropylene) sheath-core fibers with different linear density were used as raw materials to form single-layer webs, and 2～3 single-layer webs were laminated to prepare composite webs by using different gradient structure. The thermal bonding reinforcement and corona electret treament were conducted on the composite webs to obtain PE/PP sheath-core fiber air filters, whose filtering performance, dust holding capacity and static decay performance were tested. The results showed that the PE/PP sheath-core fiber air filters composed by the single-layer web whose main component was 2.0 dtex PE/PP sheath-core fibers as the top and bottom surface and the single-layer web whose main component was 6.2 dtex PE/PP sheath-core fibers as the intermediate layer, had the best comprehensive performance, including good filtration efficiency and static decay performance as well as lower filtration resistance, which indicated that the PE/PP sheath-core fiber air filters possesed good application potential.
PE(polyethylene)/PP(polypropylene) sheath-core fibers with different linear density were used as raw materials to form single-layer webs, and 2～3 single-layer webs were laminated to prepare composite webs by using different gradient structure. The thermal bonding reinforcement and corona electret treament were conducted on the composite webs to obtain PE/PP sheath-core fiber air filters, whose filtering performance, dust holding capacity and static decay performance were tested. The results showed that the PE/PP sheath-core fiber air filters composed by the single-layer web whose main component was 2.0 dtex PE/PP sheath-core fibers as the top and bottom surface and the single-layer web whose main component was 6.2 dtex PE/PP sheath-core fibers as the intermediate layer, had the best comprehensive performance, including good filtration efficiency and static decay performance as well as lower filtration resistance, which indicated that the PE/PP sheath-core fiber air filters possesed good application potential.
引文
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[3] 何建良,沈恒根.纤维细度对除尘滤料过滤性能影响的模拟研究[J].建筑热能通风空调,2016,35(11):49-52.
[4] 冀忠宝,夏钟福,沈莉莉,等.电晕充电的聚丙烯无纺布空气过滤膜的电荷储存及稳定性[J].物理学报,2005,54(8):3799-3804.
[5] 常过,邓炳耀,刘庆生,等.PLA纺黏非织造材料的制备和表征[J].纺织学报,2012,33(8):35-39.
[6] PAYATAKES A C. Model of transient aerosol particle deposition in fibrous media with dendritic pattern[J]. Aiche Journal, 2010, 23(2): 192-202.
[7] ARDKAPANS R, JOHNSONM S, YAZDI S, et al. Filtration efficiency of an electrostatic fibrous filter: Studying filtration dependency on ultrafine particle exposure and composition[J]. Journal of Aerosol Science, 2014,72(3): 14-20.