Skip to Main content Skip to Navigation
Theses

Optimisation du procédé de photopolymérisation pour l'élaboration de matériaux composites épais à matrice époxyde.

Abstract : The photopolymerization process has been optimized for the elaboration of thick epoxy composite materials (> 1 mm) through a cationic mechanism. The study of the photopolymerization kinetics of two epoxy resins (glycidyl ether and cycloaliphatic) has shown that the addition of a silica microsphere reinforcement induced conversion gradient in the material thickness, resulting from a light absorption and/or scattering phenomenon. The light scattering is all the more important as the refractive index gap between filler and matrix is high. However, this conversion heterogeneity has been compensated by a postpolymerization reaction at room temperature. Then, the analysis of the mechanical properties has shown that it was possible to obtain thick composite materials homogeneously crosslinked and whose rigidity was increased by the presence of the filler. In addition, the strategy of equalizing the filler and matrix refractive indices, coupled with the radical induced cationic frontal polymerization (RICFP) opens interesting perspectives for the development of photocomposites several centimeters thick using only a light stimulus.
Document type :
Theses
Complete list of metadatas

Cited literature [91 references]  Display  Hide  Download

https://tel.archives-ouvertes.fr/tel-02449270
Contributor : Abes Star :  Contact
Submitted on : Wednesday, January 22, 2020 - 5:24:10 PM
Last modification on : Thursday, July 2, 2020 - 3:28:17 AM
Long-term archiving on: : Thursday, April 23, 2020 - 5:07:09 PM

File

cyrielleibanez.pdf
Version validated by the jury (STAR)

Identifiers

  • HAL Id : tel-02449270, version 1

Citation

Cyrielle Ibanez. Optimisation du procédé de photopolymérisation pour l'élaboration de matériaux composites épais à matrice époxyde.. Polymères. Normandie Université, 2019. Français. ⟨NNT : 2019NORMR078⟩. ⟨tel-02449270⟩

Share

Metrics

Record views

145

Files downloads

173