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首页> 外文期刊>Journal of Applied Polymer Science >Breathable Properties of m-Aramid Nanofibrous Membrane with High Thermal Resistance
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Breathable Properties of m-Aramid Nanofibrous Membrane with High Thermal Resistance

机译：高耐热性的芳族聚酰胺纳米纤维膜的透气性

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摘要

Electrospinning of m-aramid in dimethyl acetamide/LiCl solution was investigated to develop thermo-resistant nanofibrous membranes for breathable waterproof materials. The m-aramid nanofibers were continuously generated and densely mounted to the membrane without the blockage of the spinning tip during electrospinning. In order to obtain the electrospun m-aramid nanofibers with different fiber diameters, the polymer concentration in the solution and the spinning distance were varied. Electrospun m-aramid nanofibrous membranes of various fiber diameters and thicknesses were prepared, and then compared with two commercial expanded polytetrafluoroethylene (ePTFE) membranes with respect to water vapor permeability and pore size. The m-aramid nanofibrous membrane showed a good water vapor permeability that satisfied the criterion of a breathable membrane, higher than those of the ePTFE porous membranes. Therefore, m-aramid nanofibrous membrane with thermal and mechanical resistance has great potential for breathable waterproof materials and filters. (c) 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41515.
机译：研究了间位芳纶在二甲基乙酰胺/ LiCl溶液中的静电纺丝，以开发用于透气防水材料的耐热纳米纤维膜。连续产生间位芳族聚酰胺纳米纤维并将其紧密安装在膜上，而在电纺丝过程中不会堵塞纺丝尖端。为了获得具有不同纤维直径的电纺m-芳族聚酰胺纳米纤维，改变溶液中的聚合物浓度和纺丝距离。制备了各种纤维直径和厚度的静电纺丝间位芳族聚酰胺纳米纤维膜，然后将其与两种市售的膨体聚四氟乙烯（ePTFE）膜进行比较，了解其水蒸气透过率和孔径。间位芳族聚酰胺纳米纤维膜显示出良好的水蒸气渗透性，满足了透气膜的标准，高于ePTFE多孔膜。因此，具有耐热性和机械抗性的间位芳族聚酰胺纳米纤维膜具有用于透气防水材料和过滤器的巨大潜力。 （c）2014 Wiley Periodicals，Inc. J. Appl。 Polym。科学2015，132，41515。

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