High-density Fibrous Polyimide Sponges with Superior Mechanical and Thermal Properties

被引：107

作者：

Jiang, Shaohua ^{[1
]}

Cheong, Jun Young ^{[3
]}

Nam, Jong Seok ^{[3
]}

Kim, Il-Doo ^{[3
]}

Agarwal, Seema ^{[2
]}

Greiner, Andreas ^{[2
]}

机构：

[1] Nanjing Forestry Univ, Coll Mat Sci & Engn, Coinnovat Ctr Efficient Proc & Utilizat Forest Re, Nanjing 210037, Peoples R China

[2] Univ Bayreuth, Bavarian Polymer Inst, Macromol Chem, D-95440 Bayreuth, Germany

[3] Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Daejeon 305701, South Korea

来源：

ACS APPLIED MATERIALS & INTERFACES | 2020年 / 12卷 / 16期

基金：

美国国家科学基金会;

关键词：

high-density sponge; electrospinning; compression; thermal stability; polyimide; EFFICIENT ELECTROCATALYST; POLYMER SPONGES; DOPED CARBON; NANOFIBERS; ULTRALIGHT; CONDUCTIVITY; EXPLORATION; COMPOSITES; NETWORKS; CATALYST;

D O I：

10.1021/acsami.0c02004

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

relatively low compressive strength significantly limits the practical application of sponges made from electrospun fibers because of an ultralow density <10 mg/cm(3). To solve this problem, fibrous polyimide sponges with high density (HDPISG) were prepared using a "self-gluing" concept. The HDPISG have a density of up to 280 mg/cm(3) and porosity >80%, and showed good breathability. The compressive strength increased significantly as the sponge densities increased. The HDPISG with a density of 280 mg/cm(3) has the highest compressive strength of 5190 and 35,900 kPa under 50 and 80% compression, respectively. The small HDPISG can even hold weights more than ten thousand times of the weight of the sponge. The HDPISG also possess excellent mechanical properties after thermal treatments and no loss of compressive strength can be seen after heating at 300 degrees C for 30 h. Further study indicates that the HDPISG can maintain their main shape after carbonization.

引用

页码：19006 / 19014

页数：9

共 43 条

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