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Fluorinated epoxy resin as a low adhesive mould for composite material
Affiliation:1. CTTM, rue Thalès de Millet, 72000 Le Mans, France;2. ECAM Rennes – Louis de Broglie, Campus de Ker Lann – Bruz, 35091 Rennes, France;3. LUNAM Université, UMR Université du Maine – CNRS no 6283, Institut des Molécules et Matériaux du Mans – Département Polymères, Colloïdes et Interfaces, Avenue Olivier Messiaen, 72085 Le Mans Cedex, France;1. Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou 510650, China;2. Key Laboratory of Cellulose and Lignocellulosics Chemistry, Chinese Academy of Sciences, Guangzhou 510650, China;3. University of Chinese Academy of Sciences, Beijing 100049, China;1. Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi’an, Shaanxi, 710072, PR China;2. State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an, Shaanxi, 710072, PR China;3. Aerospace Research Institute of Materials and Processing Technology, Beijing, 100076, PR China;4. China Electronics Technology Group, Corp 20th Research Institute, Xi’an, Shaanxi, 710068, PR China;1. College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310032, China;2. National Textiles and Garment Quality Supervision Inspection Center (Zhejiang Tongxiang), Tongxiang, 314500, China;1. School of Electrical and Automation Engineering, Hefei University of Technology, Hefei, 230009, China;2. Institute of Energy, Hefei Comprehensive National Science Center, Hefei, 230031, China;3. State Grid Corporation of China, Beijing, 100031, China;4. Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, Institute of Biomimetic Materials, University of Science and Technology of China, Hefei, 230026, China;5. State Key Laboratory of Advanced Power Transmission Technology, Global Energy Interconnection Research Institute Co. Ltd., Beijing, 102211, China
Abstract:The aim of this work is to decrease the adhesion between a cured modified epoxy-based substrate and an in situ cured virgin epoxy-based piece. The effect of perfluorinated additives on the non-adhesion output is investigated through an adapted pull-off test. It appears that additive migration initiates the surface fluorination. Longer the fluorinated chain is, higher the surface fluorination is and weaker the adhesion strength is. The weak chemical affinity between these two epoxy resins is shown to be mainly responsible for these results leading to an adhesive rupture.
Keywords:A  Resins  B  Surface properties  D  Surface analysis  D  Mechanical testing  Non-adhesion
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