Luminophore application study of polymer-ceramic pressure-sensitive paint.

Area of Science:

• Materials Science
• Fluid Dynamics
• Surface Chemistry

Background:

• Polymer-ceramic pressure-sensitive paint (PC-PSP) is a sprayable technology for capturing unsteady flows.
• Optimizing PC-PSP performance requires understanding the luminophore application process.

Purpose of the Study:

• To investigate how the luminophore application process affects PC-PSP characterization.
• To determine the impact of application methods on steady-state properties and response time.

Main Methods:

• A dipping deposition method was employed to apply luminophores onto a polymer-ceramic coating.
• Solvent selection was based on polarity index.
• Characterization involved assessing signal level, pressure sensitivity, temperature dependency, and response time.

Main Results:

• The luminophore application process significantly influenced signal level (up to 4.7x change), pressure sensitivity (up to 9x change), and temperature dependency (up to 3.8x change).
• Response time remained on the order of ten microseconds and was not significantly affected by the application process.
• Comparisons were made between application process effects and polymer content variations.

Conclusions:

• The method of luminophore application is critical for optimizing PC-PSP performance in terms of steady-state properties.
• PC-PSP offers a fast response time (microseconds) suitable for unsteady flow analysis.
• Further research can explore the interplay between application techniques and material composition for enhanced sensor performance.