Mechanical performance of aligned electrospun polyimide nanofiber belt at high temperature
Mechanical performance of aligned electrospun polyimide nanofiber belt at high temperature
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定向静电纺聚酰亚胺纳米纤维带高温力学性能
DOI：
10.1016/j.matlet.2014.11.003
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发表时间：
2015-02-01
影响因子：
3
通讯作者：
Hou, Haoqing
中科院分区：
文献类型：
--
作者：
Jiang, Shaohua;Duan, Gaigai;Hou, Haoqing
高温工业中需要高机械性能的高温材料。采用静电纺丝-亚胺化法制备了定向聚酰亚胺纳米纤维带（A-PI-NFB）。随着亚胺化温度的升高，A-PI-NFB的力学性能和热力学性能均有所提高。室温下，450℃亚胺化的A-PI-NFB （a - pi - nlb -450）具有最高的抗拉强度（689 MPa）和E模量（13.2 GPa）。热力学分析（TMA）和动态力学分析（DMA）表明，在N-2中300℃和350℃加热时，A-PI-NFB-450的拉伸强度和模量分别为80%和90%。这些优异的性能使A-PI-NFB成为高温过滤、防护服等方面的良好候选者(C) 2014 Elsevier B.V.版权所有。
High mechanical performance materials at high temperature are highly desired for the materials used in high temperature industries. This study reports the aligned electrospun polyimide nanofiber belt (A-PI-NFB) fabricated from the electrospinning followed with imidization. The A-PI-NFB showed increased mechanical and thermal mechanical properties as increasing the imidization temperature. At room temperature, the A-PI-NFB imidized at 450 degrees C (A-PI-NFB-450) had the highest tensile strength (689 MPa) and E modulus (13.2 GPa). The thermomechanical analysis (TMA) and dynamic mechanical analysis (DMA) showed that A-PI-NFB-450 possessed 80% tensile strength and 90% modulus when heated at 300 and 350 degrees C in N-2, respectively. These excellent properties made A-PI-NFB good candidates for use in high temperature filtration, protective clothes etc. (C) 2014 Elsevier B.V. All rights reserved.