CURING STUDY AND OPTIMIZATION OF A POLYURETHANE-BASED MODEL PAINT COATED ON SHEET MOLDING COMPOUND PART I: POLYMERIZATION AND DRYING MODELLING

S. VESSOT Lahorutoire d' Automatique ct de Gé nie des Pré cedé s, LAGEP UPRES-A CNRS Q50O7 -Université, C. BERNARD LYON I - CPE LYON - bat. 308, Villeurbanne, Cedex, 69622, FRANCE

J. ANDRIEU Lahorutoire d' Automatique ct de Gé nie des Pré cedé s, LAGEP UPRES-A CNRS Q50O7 -Université, C. BERNARD LYON I - CPE LYON - bat. 308, Villeurbanne, Cedex, 69622, FRANCE

P. LAURENT Lahorutoire d' Automatique ct de Gé nie des Pré cedé s, LAGEP UPRES-A CNRS Q50O7 -Université, C. BERNARD LYON I - CPE LYON - bat. 308, Villeurbanne, Cedex, 69622, FRANCE

J. GALY Laboratoire des Maté riaux Macromolé culaires, UMR CNRS n° 5627, Instilut National des Sciences Appliqué es de Lyon, Bâ t 403, VILLEURBANNE, Cedex, 69621|FRANCE

J.F. GERARD Laboratoire des Maté riaux Macromolé culaires, UMR CNRS n° 5627, Instilut National des Sciences Appliqué es de Lyon, Bâ t 403, VILLEURBANNE, Cedex, 69621|FRANCE

ABSTRACT

This study deals with the drying / curing process of a model car painting applied on SMC type support and more precisely with the bubbling phenomenon (craters, chips, bubbles, etc.) which appears during the industrial drying of these materials.

Firstly, the polymerization and the drying kinetics were experimentally determined for many operating conditions. Concerning the polymerization kinetics determination, different classical analytical methods were used as the differential scanning calorimetry (DSC) and the microdiclectrometry, this last one allowing the determination of the polymerization degree in situ and in real time. All these

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CURING STUDY AND OPTIMIZATION OF A POLYURETHANE-BASED MODEL PAINT COATED ON SHEET MOLDING COMPOUND PART I: POLYMERIZATION AND DRYING MODELLING

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CURING STUDY AND OPTIMIZATION OF A POLYURETHANE-BASED MODEL PAINT COATED ON SHEET MOLDING COMPOUND PART I: POLYMERIZATION AND DRYING MODELLING

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