Abstract
The photodegradation that occurs in the pressure-sensitive paint (PSP) is one of the serious error sources for pressure measurements using the PSP. The aim of the present experimental work is to study the effects of additives (phenolic antioxidant, sulfuric antioxidant and hindered amine light stabilizer) and annealing on the photodegradation of PSP. The changes in the luminescent intensity of the PSPs illuminated by an Hg-Xe lamp were measured under atmospheric pressure and room temperature. The present results show that 1) the phenolic and the sulfuric antioxidants promote the photodegradation of bathophenanthroline ruthenium(II) complex (Ru(Ph 2-phen)) dyes, 2) the sulfuric antioxidant improves the photodegradation of meso-tetra(pentafluorophenyl) porphine (H 2TFPP) dyes, 3) the annealing prevents the luminescent intensity of H 2TFPP-PSP from increasing after its initial decay.
