Open AccessFabrication, Thermal and Sound Absorption Properties of Porous Polyimide Reinforcing by SiO2 Nanoparticles
Author(s) -
Yalin Zhao,
Mingxin Geng,
Jiangang Ma,
Longgui Peng
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1838/1/012008
Subject(s) - polyimide , materials science , nanocomposite , thermal stability , fabrication , nanoparticle , composite material , absorption (acoustics) , porosity , composite number , thermal , chemical engineering , nanotechnology , layer (electronics) , physics , medicine , alternative medicine , pathology , meteorology , engineering
Special requirements of the service environment put forward higher requirements for the comprehensive performances of porous sound-absorbing materials. In this study, the polyimide/nano-SiO 2 composite foams were prepared based via the sol-gel and foaming methods. The effect of different addition of SiO 2 nanoparticles on the pore structure, sound absorption properties as well as the thermal properties of polyimide/SiO 2 nanocomposite foams are studied. Results indicate that: the addition of the nano-SiO 2 particles not only could improve the thermal stability of the composites, but also increase the sound absorption performances. Particularly, the samples with 2% addition of SiO 2 nanoparticles shows the optimal thermal and sound absorption performance. Therefore, adding the SiO 2 nanoparticles into the polyimide foams is an efficient way to improve its thermal and sound absorption performance, which would give insights into designing sound-absorbing materials with excellent comprehensive performance to curb the noise pollution.