Letteratura scientifica selezionata sul tema "Textile chauffant"
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Articoli di riviste sul tema "Textile chauffant":
Hocquet, Jean-Claude. "L’Adriatique, golfe de Venise? Commerce, ports et relations à la fin du Moyen Âge". Anales de la Universidad de Alicante. Historia Medieval, n. 23 (26 maggio 2022): 13. http://dx.doi.org/10.14198/medieval.20224.
Tesi sul tema "Textile chauffant":
Leopold, Diatezo. "Multifunctional materials for intelligent textile : Toward automotive applications". Electronic Thesis or Diss., Lyon, INSA, 2023. http://www.theses.fr/2023ISAL0114.
This PhD student research project concerns the development and use of printable multifunctional materials, focusing on the trade-offs between material properties and application specification, with a particular emphasis on joule heating and electroluminescence functions. The originality of the work lies in a coupled approach between multifunctional materials and textile integration. The first part of the study concerned the selection of multifunctional materials deemed potentially interesting for the creation of intelligent textiles adapted to TESCA-groupe's target sectors. This involved characterizing the electrical and thermal properties of both the conductive materials and the textile substrate. In addition, analyses using scanning electron microscopy (SEM)/energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD) were carried out to study the microstructure, including adhesion, the thickness of the deposited layers and the chemical composition of the materials. The second aspect focused on an accelerated ageing study on unit specimens of textile substrates coated with conductive ink, in compliance with the specifications required by Tesca. The aim of this approach was to identify the inherent limitations of each material, such as maximum deformation, temperature variations, adhesion, process compatibility, etc., with a view to proposing areas for optimization or taking these limitations into account when designing transducers integrated on textile substrates. This first step enabled us to establish a base of multifunctional materials that could be used for specific applications, such as heating mats, capacitive or resistive switches, transducers, sensors for mechanical quantities, among others. The third aspect of this research consisted in assembling these basic elements to create sub-functions described as "intelligent". In fact, the production of transducers generally involved combining different multifunctional materials to meet the specific requirements of the target application
Dewez, Sandrine. "Utilisation des micro-ondes dans l'ennoblissement textile". Valenciennes, 2008. http://ged.univ-valenciennes.fr/nuxeo/site/esupversions/fb9852f2-eb3a-4bc9-b1c6-bcb7f1fe26cc.
The textile ennoblement is very consumer out of water and auxiliaries which lead to a strong polluting load of its rejections. Thus, several studies were undertaken during the Seventies and Eighties to introduce microwave (MW) technology and to reduce pollution, but little of them led to an industrial development. Since ten years now one notes in particular a renewed interest for the MW technology in the field of chemistry. The goal of this work is initially to study the feasibility of the use of a mixed process conventional heating/MW for the textile ennoblement and to develop a laboratory pilot. The device was designed and optimized while being based on the ennoblement with various stages of various textile materials. In the second time, we tried more precisely to understand the effects of the MW on the dyeing of polyester. The use of the MW for the textile treatments makes it possible to decrease the temperatures and the duration of the treatments and also to strongly limit the addition of textile auxiliaries. With the microwaves, the kinetics of dyeing and diffusion of the dye in fibre are accelerated. The tests show that the MW act particularly on water and dyes, the polyester fiber being not very polar. Assumptions are made to explain the effects. Thus the MW would quickly compensate for the cooling caused by the evaporation of water and the sublimation of the dyes, making it possible to increase speeds of dyeing. One notes a reduction in the energy of activation of the diffusion of the dye in fibre: Specific effects of the MW would be also concerned
Rakotoarisoa, Raonisoa. "Etude d'une chaufferie d'ennoblissement textile et de sa régulation en vue de son automatisation". Mulhouse, 1987. http://www.theses.fr/1987MULH0054.
Deruaz, Jean-Pierre. "Utilisation des champs électromagnétiques dans les traitements d'ennoblissement textiles". Nancy 1, 1989. http://www.theses.fr/1989NAN10294.
Kamoun, Mounir. "Comportement rheologique du tissu musculaire et de la viande : influence du temps post mortem, de la temperature et de la duree du chauffage". Clermont-Ferrand 2, 1986. http://www.theses.fr/1986CLF21024.
Lippiatt, Nicholas Richard. "Études sur la texture du béton pour le développement d’un processus de recyclage du béton en utilisant un chauffage par micro-ondes". Thesis, Toulouse, INPT, 2014. http://www.theses.fr/2014INPT0021/document.
This thesis is concerned with the development of efficient concrete recycling technology. Concrete is the most used manufactured material on the planet and as a consequence uses more natural resources than any other industry and is responsible for 7% of the world’s carbon dioxide production, 50% of that originating from the decarbonisation of limestone. Given the magnitude of materials used and the waste produced the recycling of concrete would be a major environmental boon and should be made a priority. The main obstacle to the development and implementation of a concrete recycling process is the necessity of separating concrete components, aggregate and cement paste before recycling. Microwave heating stands as an ideal candidate due to its capacity to selectively heat different phases in a multiphase material, thus producing phase boundary fracture and increasing the liberation of the component phases. The effects of microwave heating on concrete samples were investigated with the intent of concluding on the possibility of deriving a microwave-based recycling process for concrete. The effects were measured using standard macroscopic techniques and found a strong correlation between heating, increased porosity and decreased mechanical strength for concrete. In order to better understand the changes measured at the macroscopic scale, a dedicated image analysis technique was developed using electron microscopy to investigate local microscopic changes in concrete texture. Local investigation of the changes of heat treated concrete identified the presence of fracture porosity, which has significant explanatory power for observed changes in concrete properties most relevant to recycling. Textural analysis of concrete subjected to microwave heating showed the growth of two different networks of fractures throughout the cement paste matrix, whose development is associated with the microwave settings. These textural fracture properties correspond directly to the observed changes in mechanical properties as well as the observed liberation of aggregate particles. Textural analysis shows that phase boundary fracture growth occurs rapidly in the early stages of microwave treatment and that the absolute value of textural liberation is significantly higher than that of physical liberation. This highlights the importance of choosing an appropriate comminution method to make efficient use of phase boundary fracture. Moreover, the work established causal relationships between variations in fracture porosity and changes in properties of concrete most relevant to recycling, revealing the possibility of designing a concrete waste beneficiation process through manipulating concrete texture. Since microwave heating was found to be able to manipulate the form taken by the fracture porosity, this work concludes that microwave heating of concrete is a promising technology for designing a concrete recycling scheme. Moreover, through demonstration of causal links between textural properties and processing performance criteria, this work opens the possibility of an alternative approach for analysing and designing comminution process for minerals
Grossin, David. "Développement du procédé de chauffage micro-ondes en vue de l’élaboration de céramiques à propriétés électriques particulières". Caen, 2006. https://theses.hal.science/tel-00147635/.
This work is devoted to the development of microwave heating process with the view of elaborating ceramics with particular electric properties. The aim is to valorize this heating process through the synthesis of functional ceramics. The manuscript presents interesting results which can be separated in two parts. Firstly, we studied the microwaves heating of refractory oxides in a resonant rectangular cavity TE102. Initially the synthesis by direct microwave heating of La0. 8Sr0. 2MnO3 (LSMO) was selected but the obtained results were not satisfying and the direct heating was modified by an indirect one. This new process allowed the successful synthesis and sintering of long LSMO bars in both static and continuous mode without deteriorating the high colossal magneto-resistance properties of this material. This process was also employed with success for the insulator BaZrO3 sintering. Secondly, we studied the texturation of YBa2Cu3O prepared by the microwaves floating zone process. The objective was to improve the superconducting properties by controlling the crystallographic orientation. For that, two processes were developed. The first method consisted to substitute partially the calcium in the yttrium site, which allowed an effective optimization of the orientation and opened new perspectives for improving the processing and properties of superconducting materials. The second method combines the floating zone with the top seeding method. Samples obtained by this method showed satisfactory superconducting properties. The texture was analysed and studied by EBSD, XRD, and neutron diffraction
Grossin, David. "Développement du procédé de chauffage micro-ondes en vue de l'élaboration de céramiques à propriétés électriques particulières". Phd thesis, Université de Caen, 2006. http://tel.archives-ouvertes.fr/tel-00147635.
- Une première partie aborde l'élaboration par chauffage micro-ondes d'oxydes réfractaires dans une cavité résonante rectangulaire TE102. La synthèse par chauffage micro-ondes direct de la phase La0.8Sr0.2MnO3 (LSMO) envisagée initialement n'est pas satisfaisante, un chauffage indirect est alors mis en place. Ce nouveau procédé a permis de synthétiser et de fritter avec succès en mode statique et en continu de longs barreaux de LSMO sans altérer les propriétés remarquables du matériau à magnétorésistance colossale. L'utilisation de ce procédé pour fritter également un matériau isolant BaZrO3 a conduit à une réussite.
- Une seconde partie est consacrée à la texturation de YBa2Cu3OΔ par procédé micro-ondes de fusion de zone. L'objectif est d'améliorer les propriétés supraconductrices en contrôlant l'orientation cristallographique. Ainsi deux procédés ont été développés. Le premier qui consiste à substituer partiellement l'Yttrium par du Calcium a permis une réelle optimisation de l'orientation et ouvre de nouvelles perspectives. Le second combine la fusion de zone avec la croissance assistée par germe. Les échantillons élaborés par cette méthode possèdent des propriétés supraconductrices satisfaisantes. Ils ont été caractérisés par des méthodes d'analyses de texture comme : l'EBSD, DRX, neutron.