共 5 条
In Situ Thermal Cross-Linked Semi-Interpenetrating Polyamide-Imide/Meta-Aramid Micro/Nanofibrous Aerogels for Thermal Insulation
被引:1
|作者:
Wang, Jing
[1
,2
]
Hu, Huabin
[1
,2
]
Li, Caiyun
[1
,2
]
Li, Lei
[3
,4
]
机构:
[1] Tiangong Univ, Sch Text Sci & Engn, Tianjin 300387, Peoples R China
[2] Tiangong Univ, Inst Composite Mat, Minist Educ, Key Lab Adv Text Composite Mat, Tianjin 300387, Peoples R China
[3] Chinese Acad Sci, CAS Key Lab Green Proc & Engn, Inst Proc Engn, Beijing 100190, Peoples R China
[4] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源:
ACS APPLIED POLYMER MATERIALS
|
2024年
/
6卷
/
13期
关键词:
micro/nanofibrous aerogel;
polyamide-imide;
meta-aramid;
thermal insulation;
semi-interpenetratingpolymer networks;
EFFICIENT;
D O I:
10.1021/acsapm.4c00752
中图分类号:
T [工业技术];
学科分类号:
08 ;
摘要:
Currently, polymer nanofibrous aerogels suffer from the disadvantages of poor heat resistance and lack of interaction between polymer nanofibers, and it is challenging to fabricate polymer nanofibrous aerogels with excellent elasticity and thermal properties. In this thesis, a bottom-up strategy to form micro/nanofibrous aerogels (MNFAs) by semi-interpenetrating polymer network (Semi-IPN) structure, with flexible meta-aramid (PMIA) nanofibers and rigid polyamide-imide (PAI) microfibers prepared by electrostatic spinning, was reported. The rigid-flexible coupling structure enhanced the aerogels' thermal insulation and mechanical properties, while semi-IPNs endowed the aerogels with excellent structural stability and elasticity. The PAI/PMIA MNFAs also possessed superelastic and pronounced fatigue resistance. The stress retention of the aerogel was 76.6% of the initial value after 200 cycles at 80% strain, producing only 19.8% plastic deformation. Besides, MNFAs have a good thermal insulation property (30.66 mW m(-1) K-1), as well as a high thermal decomposition temperature (420.0 degrees C). Such attractive aerogel materials exhibit excellent prospects in human body thermal protection, equipment protection, etc.
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页码:7441 / 7448
页数:8
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