Étude expérimentale du séchage infrarouge et convectif de peintures automobiles modèle sur supports plastiques ou métalliques

Vessot, Séverine; Blanc, Denise; Laurent, Pierre; Andrieu, Julien

doi:10.1016/s0035-3159(97)88160-3

Cited by 1 publication

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“…But it seems that "reactive ~ ~~-T o whom correspondence should be addressed convective heating conditions or under infrared heating conditions. So, these topics have been studied under the fundamental program started in our laboratory few years ago (6)(7)(8)(9)(10).…”

Section: Introductionmentioning

confidence: 99%

Convective and radiant (IR) curing of bulk and waterborne epoxy coatings as thin layers. Part II: Infrared curing

Blanc

Praly

Andrieu

et al. 1999

Polymer Engineering & Sci

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In the first part of this paper, a method for studying the curing of 100‐μm‐thick epoxy‐based layers on steel substrates was described. In this second part, we extend our study to radiative (infrared) heating conditions. A simple waterborne epoxy reactive system based on a diglycidylether of bisphenol‐A prepolymer and a polyether triamine was used. The chemical kinetics during infrared heating were studied with the reaction kinetics recorded during convective heating. A second order autocatalytic model described the data. The curing mode had no significant influence on the heating kinetics but the heating rate had a significant influence on the curing kinetics. Higher heating rates can be achieved by infrared heating conditions compared with convective heating. The gelation phenomenon was changed for infrared conditions. Microdielectrometry can be used to record in situ the extent of reaction of the epoxy reactive system for thin layers during radiant heating.

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Section: Introductionmentioning

confidence: 99%