Effects of antioxidants on photodegradation of porous pressure-sensitive paint

Yasuhiro Egami, Keisuke Asai

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)

Abstract

The purpose of this paper is to propose a method to prevent photodegradation of porous Pressure-Sensitive Paint (AA-PSP) and to validate its effect by experiment. AA-PSP is a coating with dye molecules adsorbed on the surface of porous anodized alumina. Among various dye molecules, AA-PSP using Pyrene-Butyric Acid (PBA) has suitable characteristics for a fast responding PSP such as fast time response, high pressure sensitivity, high luminescent intensity and small temperature dependency. However, this PSP has poor photo-stability and is unable to be used for unsteady measurement in which excitation light is higher than steady tests. In this paper, we propose a method to reduce photodegradation of PBA-based AAPSP by using antioxidants. Three types of antioxidants (phenolic, sulfuric, and HALS) were applied on AAPSP and their effects on photo-stability were compared by the aging test conducted with one-hour long continuous exciting irradiation under argon or air. The results of these tests showed that HALS and sulfuric antioxidants were effective in reducing photodecomposition and photo-oxidation, respectively. On the contrary, phenolic antioxidant had no effect on photodegradation. Photodegradation rate of PBA-based AA-PSP can be adjusted by using a combination of HALS and sulfuric antioxidants.

Original languageEnglish
Title of host publication22nd AIAA Aerodynamic Measurement Technology and Ground Testing Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Print)9781624101120
DOIs
Publication statusPublished - 2002
Externally publishedYes
Event22nd AIAA Aerodynamic Measurement Technology and Ground Testing Conference 2002 - St. Louis, MO, United States
Duration: 2002 Jun 242002 Jun 26

Publication series

Name22nd AIAA Aerodynamic Measurement Technology and Ground Testing Conference

Other

Other22nd AIAA Aerodynamic Measurement Technology and Ground Testing Conference 2002
CountryUnited States
CitySt. Louis, MO
Period02/6/2402/6/26

ASJC Scopus subject areas

  • Aerospace Engineering

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