Cure Degree Estimation of Photocurable Coatings by DSC and Differential Photocalorimetry |
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Authors: | Ruiz C S B Machado L D B Vanin J A Volponi J E |
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Institution: | 1.Instituto de Química, Universidade de S?o Paulo, S?o Paulo, Brazil ;2.Institutode Pesquisas Energéticas e Nucleares, Centro de Technologia das Radia??es, S?o Paulo, Brazil ; |
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Abstract: | Radiation-curable coatings have acquired importance, because they are environmentally-friendly (no solvent emission)and require
low energy for curing, when compared to other conventional heat-curable products. UV-curable coatings performance depends
on the cure quality. Suitable methods were evaluated to estimate the degree of cure applying quantitative techniques, such
as differential scanning calorimetry (DSC) and differential photocalorimetry (DPC), in order to determine the residual heat
of curing in UV-cured films. The results of the DPC technique showed better sensibility than DSC technique, although the use
of suitable pans for the case of clear coats must be considered.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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Keywords: | photocurable materials UV clearcoats UV radiation curing |
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