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Determination of Epoxy to Hardener Ratios in a Cycloaliphatic Epoxy

Epoxy resin is a type of synthetic resin that could be used in a wide range of applications such as adhesives, coatings and fluxes, which require varieties of engineered curing kinetics and glass transition temperatures. The versatility of these epoxy resin systems arises from combining the epoxy resin with a co-reactant, called hardener, into a twocomponent epoxy. To make the precision control of the epoxy to hardener ratio, modern delivery systems package each component separately at a pre-defined volume. However, it is always a challenge in R&D and QA/QC to measure the epoxy to hardener ratio from cured epoxy to certify the optimized ratio. This application note presents a novel method to quantify the epoxy to hardener ratio from cured two component epoxy by using a pyrolyzer coupled to a GC/MS system.

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