| 摘要 |
An aramid nonwoven fabric showing more improved tenacity and superior heat-insulating property, and a method of preparing the same. The aramid nonwoven fabric is what includes 10 to 100 wt % of para-aramid staple fibers and 0 to 90 wt % of meta-aramid staple fibers, and has an air permeability of 40 to 200 cm3/cm2/sec and an average pore size of 20 to 50 mum. Such aramid nonwoven fabric can be prepared by carding aramid fibers including the para-aramid staple fibers and the meta-aramid staple fibers so as to form a web, needle-punching the same, and water-punching the same with a prescribed water pressure.
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