航空学报2025，Vol.46Issue(14)：77-87,11.DOI:10.7527/S1000-6893.2024.31443
稀薄气体环境高灵敏度高稳定性压力敏感涂料开发与表征
Development and characterization of pressure-sensitive paint with high sensitivity and constancy in rarefied gas environments
吴靖 1陈培辉 1黄赞强 1黄峰 1李国帅2
作者信息
- 1. 福州大学 机械工程及自动化学院,福州 350108
- 2. 中国空气动力研究中心 高速空气动力研究所,绵阳 621000
- 折叠
摘要
Abstract
Accurate measurement of the surface pressure distribution of spacecraft models under low-pressure condi-tions contributes to the optimal design of space probes.Pressure-Sensitive Paint(PSP)is a non-contact technique for optical measurement of full-field surface pressure distribution.To apply the PSP technology in rarefied gas environ-ments,PSP with high pressure sensitivity and high pressure sensitivity constancy at low pressures needs to be devel-oped.This paper uses PdTFPP,a luminophore with long luminescence life,Room-Temperature Vulcanized(RTV)silicone rubber,a polymer with high oxygen permeability,and micro-nano-particles with different types and contents to develop pressure-sensitive paints.The influences of the particle type,particle contents,and dispersants on the static performances of the PSP are investigated.Experimental results indicate that the Polymer-Ceramic Pressure-Sensitive Paint(PC-PSP),employing mesoporous silica(mSiO2)as the micro-nano-particles,exhibits higher pressure sensitiv-ity and lower photodegradation rate compared to other micro-nano-particles.PdTFPP/mSiO2-RTV,with a particle con-tent of 70wt%and prepared without dispersant,has a pressure sensitivity and pressure sensitivity constancy of 80.72%/kPa and 99.44%,respectively,and its temperature sensitivity and photodegradation rate are-0.9%/K and-0.09%/min,respectively.In comparison to other PSP based on highly oxygen permeable polymers,PdTFPP/mSiO2-RTV(70wt%)is demonstrated to be more suitable for static small pressure measurements in low pressure environments.关键词
压力敏感涂料/稀薄气体环境/稳态性能/压力灵敏度/压力灵敏度稳定性Key words
pressure sensitive paint/rarefied gas environment/static performance/pressure sensitivity/pressure sensitivity constancy分类
航空航天引用本文复制引用
吴靖,陈培辉,黄赞强,黄峰,李国帅..稀薄气体环境高灵敏度高稳定性压力敏感涂料开发与表征[J].航空学报,2025,46(14):77-87,11.
