A Possible In-Situ Thermal History Indicator for Uncured Film Ad hesives |
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| Authors: | D J Rigg I Grabovac S Russo S A Mestan P J Pearce R G Davidson C E M Morris |
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| Affiliation: |
a Department of Defence, Materials Research Laboratories, Ascot Vale, Victoria, Australia
b ICI (Aust) Ltd., Central Research Laboratories, Ascot Vale, Victoria
c Department of Defence, Directorate of Quality Assurance, Victoria, Highett, Victoria |
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| Abstract: | A range of epoxy formulations, typical of aerospace adhesives, containing a pyrazolone dye, has been shown to undergo a reaction which results in a change in colour of the formulation. The rate of reaction depends greatly on the particular epoxy resin. The extent of reaction may be determined by direct coiour measurement or by chromatographic analysis of the remaining dye level. The possible use of this reaction as an in-situ thermal history indicator is discussed. |
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| Keywords: | Colour change colour measurement epoxy resins film adhesives in-situ thermal history indicator reactive pyrazolone dye |
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