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Academic literature on the topic 'Résines phénoliques'
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Journal articles on the topic "Résines phénoliques"
Redjel, B., and F. X. de Charentenay. "Application des statistiques de Weibull à la caractérisation des résines phénoliques et des matériaux composites SMC." Matériaux & Techniques 75, no. 10-11 (1987): 421–24. http://dx.doi.org/10.1051/mattech/198775100421.
Full textBlais, J. F., S. Dufresne, and G. Mercier. "État du développement technologique en matière d'enlèvement des métaux des effluents industriels." Revue des sciences de l'eau 12, no. 4 (April 12, 2005): 687–711. http://dx.doi.org/10.7202/705373ar.
Full textREDJEL, B., and F. X. de CHARENTENAY. "RÉSISTANCE AU CHOC DES MATÉRIAUX COMPOSITES SMC À BASE DE RÉSINE PHÉNOLIQUE." Le Journal de Physique IV 01, no. C3 (October 1991): C3–297—C3–304. http://dx.doi.org/10.1051/jp4:1991342.
Full textCarbonneau, Alain, Raul Del Monte, François López, and Hernán Ojeda. "The foldable lyre: ecophysiological interest for management of light absorption and water; technological interest for mechanical harvesting." OENO One 38, no. 1 (March 31, 2004): 89. http://dx.doi.org/10.20870/oeno-one.2004.38.1.931.
Full textDissertations / Theses on the topic "Résines phénoliques"
Monéger, Catherine. "Etude de la graphitisabilité des carbonisats de résines phénoliques." Orléans, 1998. http://www.theses.fr/1998ORLE2079.
Full textFoyer, Gabriel. "Synthèse de résines phénoliques bio-sourcées sans formaldéhyde pour l’industrie aérospatiale." Thesis, Montpellier, Ecole nationale supérieure de chimie, 2015. http://www.theses.fr/2015ENCM0021/document.
Full textResol-type phenolic resins present applicative and thermal properties suitable for applications such as composite manufacture in aeropatial industry. Especially, resols can be polymerized stage-wise and present after curing high char yield properties. However, those resins are typically synthesized from formaldehyde and phenol. Those precursors are both classified as Carcinogenic Mutagenic Reprotoxic (CMR), respectively 1B and 2, and are petrobased. Because of this classification and of the fossil feedstock depletion, SAFRAN-Herakles wants to substitute formaldehyde by non-toxic and biobased aldehyde precursors. Aromatic aldehyde precursors such as 4-hydroxybenzaldehyde, vanillin and syringaldehyde are interestingly non-toxic and can be produced from the cheap and abundant lignins. Nevertheless, we have shown that those precursors are not reactive in resol synthesis conditions. Also, we have shown that difunctional and reactive aromatic aldehyde precursors are suitable for the synthesis of high char yield resins. Then, we have designed two functionalization methods to turn the biobased aldehyde precursors into difunctional and reactive ones. Finally, those precursors have been used for the synthesis of biobased resols without formaldehyde. Those new resins can be polymerized stage-wise and present higher char yield properties than the current formophenolic resins. Hence, those new biobased aldehyde precursors represent promising alternatives to formaldehyde for the synthesis of resols with target properties for aerospatial industry applications
Mansouri, Komsari Hamid Reza. "Amélioration des résines Urée-Formaldéhyde et Phénol-Formaldéhyde pour le collage des panneaux à base de bois." Thesis, Nancy 1, 2007. http://www.theses.fr/2007NAN10081/document.
Full textThe work in this thesis has tried to improve the characteristics of aminoplastic and phenolic resins used to make wood particleboard and plywood. To achieve this a number of different additives, active extenders and fillers have been added to the resins. These were polymeric diphenylmethane diisocyanate (pMDI), micronized waste polyurethane (PUR) powders, a protein namely albumin, a number of fluorinated polyethers (PolyFox) and urea-formaldehyde (UF) polycondensates in which part of the formaldehyde was substituted with propionaldehyde to form urea (formaldehyde-propionaldehyde (UFP) resins. The totality of the formulations and methodologies used for the preparation of the resins is presented in this thesis. Four types of laboratory resins have been synthetised: UF (Urea-Formaldehyde), PF (Phenol-Formaldehyde), UFP (Urea-Formaldehyde-Propionaldehyde) and UP (Urea-Propionaldehyde). Two commercial UF resins have also been used. All the resins were analysed by 13C NMR, gel permeation chromatography (GPC), thermomechanical analysis (TMA) and infrared spectrometry (FT-IR). The plywood and wood particleboard were prepared with the different glue-mixes, and tested according to the specifications of the relevant European Norms. Some of the panels were also analysed by X-ray microdensitometry and MEB
Sylla, Moustapha. "Rôle des molécules phénoliques dans la photopolymérisation : application à des résines de finition pour le bois." Nancy 1, 2001. http://www.theses.fr/2001NAN10172.
Full textThe use of environnement kind finishes such as photocurable resins onto wood is difficult because of the material reactivity. We studied the influence of phenols chosen as model wood extractives onto the photopolymerization of acrylates. Kinetics of radical curing were investigated by differential scanning (photo)calorimetry to compare phenols reactivity following the nature of initiation (thermal or photochemical) and the action of photoinitiators used. Our results are in good agreement with the interaction mechanisms between phenols/transient species arising from investigations by transient absorption and electron spin resonance spectroscopies. Mechanical properties of acrylate films were characterized by thermomechanical analysis and some structural defects of the cured networks were highlighted depending upon the photoinitiator used. Further developments of this study concern the characterization of coloured phenolic compounds and the use of initiators efficient in visible light
Maza, Lisa Jésus. "Résines vertes à base de lignine organosolve." Thesis, Pau, 2017. http://www.theses.fr/2017PAUU3039.
Full textPhenolic resins, may be used in the wood industry for the manufacture of particle boards or plywood, after gluing, impregnation and/or hot-pressing steps. They are mainly obtained by step polymerization (polycondensation) from formaldehyde and phenol. These two raw materials are currently petrochemicals.This thesis work, supported by Rolkem, a company specialized in the design and manufacture of resol type phenolic resins, aims to reduce the use of non-biobased materials by replacing phenol with lignin exhibiting a phenolic structure and a structural similarity with the network of phenolic resins. Lignin is abundant in the environment and easily available. To achieve the industrialization of these new biobased resins, a study on the understanding of the reaction mechanisms has been carried out to favor the incorporation of lignin within the resins. It has been possible to replace up to 50wt.% of the phenol with organosolve lignin and to reduce the initial concentration of formaldehyde at the same time. 75wt.% substitution has been achieved using a Kraft lignin by reducing up to 30wt.% of the formaldehyde concentration as compared to conventional resins. The new biobased resins respect the Rolkem specifications. Thanks to this work results, the scale transfer of biobased resins from the laboratory scale to the industrial pilot was possible, while respecting industrial constraints such as productivity, quality, safety and environment. In addition, the industrial plywood bonding tests were in accordance with the prerequisite.In addition to the above objectives the reactivity of BiolignineTM with formaldehyde has been studied under conventional heating and microwave irradiation. This complementary study allows the correlation of the lignine-formaldehyde reactivity and the heating modes to specifically reach products resulting from addition or condensation reactions
Oehler, Danièle. "Etudes cristallographiques de calixarènes et de précurseurs de résines phénoliques obtenus à partir du paraisopropyl-phénol." Lyon 1, 1987. http://www.theses.fr/1987LYO19039.
Full textArrambide, Cruz Carlos. "Méthodologies de synthèse de résines formo-phénoliques chélatantes : vers une extraction solide-liquide optimisée des métaux stratégiques." Thesis, Montpellier, 2017. http://www.theses.fr/2017MONTT169.
Full textExtraction of specific targeted species (rare earth, heavy metals, transition metals, radionuclides) from industrial (mining deposit and urban mining) and nuclear effluents is an important issue in the recycling and / or decontamination processes. A large number of organic and inorganic solids, chelating or ion-exchanging materials, have been developed for selective ionic separation by solid / liquid process. Metal-specific ligands incorporate in the structure of the resin itself is an interesting way to perform ion separation taking the advantage of the selectivity of chelating agents. The aims of this project are firstly the synthesis of chelating original systems and then prepare specific ion exchange resins.From formo-phenolic resins incorporating catechol and 8-hydroxyquinoline, we have been able to show that the selective recovery of germanium from silicon or zinc was possible, , depending on their proportion of each phenolic precursors in the polymeric matrix.The synthesis of the phenolic precursors integrating ligands such as diglycolamic acid and diglycolamides allowed the use of resin for the recovery of rare earths elemnets. A study on the understanding of the synthesis of resins as well as their performance of extraction was thus realized and was able to highlight the potential of these resins for the recovery and valorization of the rare earths elements.An opening towards other possibilities of synthesis of this type of resins (porous materials, in the form of foam, etc.) is also proposed in order to increase the contact surfaces during solid-liquid extractions and thus increase the performance of these materials
Demattei, Didier. "Etude de l'acidité des matériaux photosensibles utilisés en microlithographie : application aux polymères phénoliques et aux composés diazonaphtoquinones." Montpellier 2, 1991. http://www.theses.fr/1991MON20217.
Full textRoumeas, Laurent. "Étude des voies de dépolymérisation chimique des tanins condensés : vers une production industrielle de composés phénoliques biosourcés." Thesis, Montpellier 1, 2013. http://www.theses.fr/2013MON13522.
Full textThe substitution of fossil carbon by renewable raw materials is a major strategic challenge for the environment, economy and public health. Our thesis focuses on the utilisation of phenol derivatives, which are widely used in the field of synthetic materials (resins, plastics). Previous studies have demonstrated the potential of plant flavanol monomers as substitutes for petrochemical phenols such as bisphenol A. The objective of this work was to contribute to the development of an industrial access to such compounds by depolymerization of condensed tannins (proanthocyanidins), an abundant plant resource currently untapped for such applications. Depolymerization can be performed by breaking the interflavan bonds in acidic medium and scavenging the released carbocations by a nucleophilic reagent. Various strategies and conditions were studied and compared to better understand the role of the acid, the nucleophile and the solvent and temperature in the depolymerisation reaction. The selected strategies, applied on a pure B2 dimer used as a model and an industrial seed tannins extract from white grape pomace at the gram scale, were compared in terms of performance, kinetics, product stability, ease of implementation and work-up in the context of a larger scale production complying with the objectives of sustainable development and the constraints of industrialization
Tejeda-Ricardez, Jesús Alberto. "Etude de la liquéfaction de déchets de l'industrie de l'huile d'olive en vue d'une application dans le domaine des résines phénoliques et des mousses de polyuréthane." Toulouse, INPT, 2004. http://www.theses.fr/2004INPT001G.
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