聚酰亚胺
材料科学
纳米复合材料
热稳定性
制作
纳米颗粒
复合材料
吸收(声学)
多孔性
复合数
热的
化学工程
纳米技术
图层(电子)
气象学
病理
工程类
物理
替代医学
医学
作者
Yalin Zhao,Mingxin Geng,Jiangang Ma,Longgui Peng
出处
期刊:Journal of physics
[IOP Publishing]
日期:2021-03-01
卷期号:1838 (1): 012008-012008
被引量:2
标识
DOI:10.1088/1742-6596/1838/1/012008
摘要
Abstract 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.
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