Formulation et caractérisation de nouvelles résines pour la stéréophotolithographie laser

Abstract : The pieces made with a resin of first generation (such as the Ciba-Tool XB 5081), are very brittle because the photopolymer elongation to break was about two percent only. Hence, we have studied reactive mixtures including urethane-acrylate oligomers to improve the mechanical properties and a new reactive diluent developed by S.N.P.E.to assure high reactivity. By testing several ratios, we obtained a resin of twenty percent elongation to break. The curling of a layer cured in the 3D-machine is a major problem limiting the parts accuracy. In order to improve this accuracy, we studied the influence of resin properties on cantilever curling. The is no obvious relation between the viscosity, the interfacial tension, the shrinkage and the conversion ration of the resin on cantilever curling
Document type :
Theses
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http://docnum.univ-lorraine.fr/prive/INPL_T_1992_BALMES_F.pdf
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https://hal.univ-lorraine.fr/tel-01752277
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Submitted on : Thursday, March 29, 2018 - 1:40:19 PM
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Fabienne Balmes. Formulation et caractérisation de nouvelles résines pour la stéréophotolithographie laser. Autre. Institut National Polytechnique de Lorraine, 1992. Français. ⟨NNT : 1992INPL126N⟩. ⟨tel-01752277⟩

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