共查询到19条相似文献,搜索用时 156 毫秒
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微细旦非织造布过滤介质具有产品的多样性、低成本、多功能性以及良好的性价比等特点,在过滤分离材料领域占据着重要位置。分析了微细旦及纳米非织造布过滤材料的特点及市场情况,以一些生产厂家的过滤产品为例,重点介绍了熔喷和纺粘非织造布、纳米纤维非织造布的特性及其在滤材上的应用。 相似文献
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通过液喷侧吹纺丝方法制备了聚乳酸(PLA)微纳米纤维和PLA/聚丙烯(PP)熔喷复合过滤非织造材料,探讨了液喷工艺参数对PLA微纳米纤维直径和分布的影响,并对不同制备条件下的PLA/PP复合过滤非织造布的力学性能、透气性及过滤性能进行了测试。结果表明,在PLA溶液质量分数为7%,风压为0.3 MPa,接收距离为35 cm,挤出速率分别为15,20,25 m L/h的条件下,可获得直径分别为0.98,1.02,1.12μm的PLA微纳米纤维。当液喷侧吹时间为30 min、挤出速率为20 m L/h时,PLA/PP复合过滤非织造布的透气性下降了52.48%,而过滤阻力、断裂强度和过滤效率分别提高了22.79%,94.51%和46.84%,其综合性能得到明显改善。 相似文献
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《合成纤维工业》2015,(5):72-75
采用盐性气溶胶颗粒对聚丙烯(PP)熔喷非织造布进行容尘实验,研究了不同气体流量、滤料层数、过滤时间对PP熔喷非织造布过滤特性的影响。结果表明:对于单层熔喷非织造布,气体流量为30 L/min时,初始阻力为37.4 Pa,初始过滤效率为97.86%;气体流量为85 L/min时,初始阻力为112.2 Pa,初始过滤效率为90.69%;随着气体流量的增加,PP熔喷非织造布的过滤效率呈现近似线性下降的趋势,而过滤阻力则呈现线性增长的趋势;当气体流量为30,85 L/min,采样时间为4 s时,随着叠加层数的增加,其过滤效率的差异越来越小,过滤阻力差异越来越大,呈现不同的增长趋势;对于单层熔喷非织造布,随着过滤时间的增加,过滤效率和阻力增加,但过滤效率的增长趋势呈先急后缓,而过滤阻力则呈先缓后急的趋势。 相似文献
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结合生产实际情况,利用几种PP/PE双组份熔喷医用非织造布,对试样的硬挺度、尺寸稳定性、拒水性、过滤性等进行了测试,分析和比较了不同克重的PP/PE双组份熔喷非织造布试样的性能和特点,通过实验得出了不同克重的非织造布具有不同的力学性能和较为稳定的结构,并发现非织造布的克重、厚度和结构特征等对以上性能影响较大,它们之间有一定的相关关系,因此PP/PE双组份熔喷非织造布材料具有独特的性能,适合开发各类功能性产品,在医疗卫生、过滤等方面有着广泛的应用前景。 相似文献
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Andinet Kumella Eticha Yasin Akgul Ayben Pakolpakcil Oğuz Kagan Unlu Harun Cug Ali Kilic 《应用聚合物科学杂志》2024,141(17):e55297
Polypropylene (PP) is a semi-crystalline polymer that displays simple manufacturing, high stiffness, lightweight, chemical resistance, and inexpensive. However, PP has significant drawbacks, such as poor brittleness at low temperatures, high shrinkage ratio, and low impact resistance, which limit its development. Thermoplastic polyurethane (TPU) possesses recyclable and eco-friendly characteristics, along with the elasticity of rubber and exceptional mechanical properties. In this study, a flexible and high-filtration performance PP-TPU textile material was developed by melt-blowing for filtering PM0.3 aerosols. For the first time, a melt-blown PP-TPU nonwoven was used as an air filter. The fiber morphological studies exhibited that addition of 10 and 20 wt.% TPU into PP resulted in a fiber diameter increment from 0.94 to 1.24 μm. Also, melt-blown PP-TPU forms helical fibers, which are different from fibers noticed in melt-blown PP. Corona-charged double-layer 80PP-20TPU nonwovens have a filtration efficiency of 99.25% and quality factor (QF) of 0.13 mm H2O−1 at an air flow rate of 95 L/min. Moreover, PP's tensile strength was increased by 72.22%, and elongation was raised by 38.1% with the addition of 20 wt.% TPU. Thus, PP-TPU melt-blown composites may bring novel perspectives into the design and development of high-performance filtering materials for a variety of applications. 相似文献
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Bin Yu Hui Sun Yongmin Cao Jian Han Jinjin Kong Peng Wang 《Polymer-Plastics Technology and Engineering》2013,52(17):1788-1793
To obtain flexile poly(lactic acid)-based melt-blown nonwoven filtration material, poly(lactic acid)/poly(?-caprolactone) melt-blown nonwoven with various components were melt-spun by melt-blown processing in the Melt-blown Experiment Line. The 3 wt.% tributyl citrate to poly(?-caprolactone) was added in the composites as compatibilizer. The effect of poly(?-caprolactone) on the structure, morphology, mechanical and filtration properties of poly(lactic acid)/poly(?-caprolactone) melt-blown nonwoven was reported. Scanning electron microscopy micrographs revealed good dispersion of the additive in the fiber webs. The crystallinity of melt-blown webs with poly(?-caprolactone) was more than that of poly(lactic acid) alone. The tensile strength, ductility and air permeability of poly(lactic acid) melt-blown nonwovens were enhanced significantly. The input of poly(?-caprolactone) increased the diameter of fibers and decreased the filtration efficiency of poly(lactic acid)/poly(?-caprolactone) melt-blown nonwoven. 相似文献
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The purpose of this study was to compare the performance efficiency of melt-blown and currently used glass fiber filter media under the same environmental conditions. To evaluate filter efficiency, filter class was determined according to ISO and European standards (EN 1822-1:2009) using an automated filter tester (0.3 μm size), taking into account particle filtration, fractional efficiency for negative pressure devices, and consumption of electrical power. The average fractional efficiency, quality factor (QF), fractional efficiency by dust loading amount, pressure by dust loading amount, and QF by dust loading amount were higher in the case of melt-blown media than in the case of glass fiber filters. The fractional efficiency of hydrocharged melt-blown filters was higher than that of uncharged media. Based on performance efficiency, melt-blown filters are more effective high efficiency particulate air filters than glass fiber media.
Copyright © 2018 American Association for Aerosol Research 相似文献
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空调系统是涂装车间高品质生产中一个非常重要的外部要素,空调系统的结构及对各个参数控制的好坏直接影响产品涂装质量。对涂装车间恒温恒湿洁净空调系统进行说明和探讨,介绍空气过滤器性能、选择方法及注意事项。 相似文献
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《云南化工》2017,(4):29-33
将碳纳米管和玻璃纤维复合成抗菌空气滤纸,来研究不同的负载方式、不同的碳纳米管管径对滤纸抗菌性能的影响。通过扫描电镜SEM,过滤效率和阻力来评价纸张相关性能,通过对大肠杆菌和金黄色葡萄球菌的抗菌效果测定评价其抗菌性。研究结果表明:采用碳纳米管复合的空气滤纸有较好的抗菌性,碳纳米管负载于纸页表面的抗菌效果较好;碳纳米管在空气滤纸上的抗菌率还和管径有关,管径在10~20μm之间碳纳米管复合空气滤纸对大肠杆菌抗菌率为99.80%,金黄色葡萄球菌抗菌率为99.61%,适宜的管径有利于抗菌。复合的抗菌过滤纸可广泛用于医院、生物用过滤器,为研制新型的抗菌过滤器提供了新的材料。 相似文献
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研制了一种空调器室外机塑料壳体,该塑料壳体由聚酯瓶破碎料经改性造粒后注塑成型或者由聚酯瓶破碎料经改性后挤出成板材,再将板材热压成型加工制作而成。试验结果表明,该空调器室外机塑料壳体耐老化、免油漆、耐雨水冲刷、耐腐蚀、绝缘性能好、加工工艺简单、生产制作成本低廉,综合性能优于金属材料制作而成的空调器室外机壳体。 相似文献