Evaluation of thermoset UV curing kinetics by calorimetry, rheology and FTIR spectroscopy

Document Type

Conference Proceeding

Publication Date

6-1-2004

Abstract

UV curable polymer systems are commonly characterized for degree and time of cure by thermal methods such as scanning photocalorimetry. In this work, we modified existing thermal and rheological instruments in order to apply a controllable dosage of UV radiation and compare the curing kinetics of two commercial polyester and epoxy powder coating systems differing in rate of cure. In general, there is an optimal temperature range whereby the material is completely cured. The optimal conditions are generally set for material heated above its flow temperature to cure within 5 seconds of UV radiation. Our thermal and rheological results are in good agreement with each other and with manufacturer's published data employing photocalorimetry. The data were analyzed for temperature dependence and efforts were made to correlate thermal and rheological results with time dependent structural changes monitored by FTIR spectroscopy.

Identifier

2442473350 (Scopus)

Publication Title

Annual Technical Conference ANTEC Conference Proceedings

First Page

2217

Last Page

2221

Volume

2

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