1,721,083 research outputs found
Thermal behavior of vehicles and digital inks for inkjet decoration of ceramic tiles
No full textNowadays, after a sudden development in the last 2–3 years, inkjet decoration of ceramic tiles is the major decoration technique, but scientific studies on characteristics and behaviors of digital inks are quite rare. A set of common vehicles and digital inks for ceramic decoration have been studied by FTIR spectrometry to characterize their organic components and TG-DTA to understand their thermal behavior. This characterization is necessary to evaluate how inks react entering in the firing kilns and how they can influence emissions at chimneys. We were able to identify 6 classes of inks, depending on the nature of their vehicles. First thermal data show that the major part of inks start to evaporate, between 170 and 285 °C, then volatile compounds decompose with exothermic reactions, between 200 and 315 °C, depending on the nature of vehicles and heating rate. Differences in the intensity of phenomena are clearly visible between slow and fast heating rates, suggesting a predominance of combustion over evaporation at fast heating rates. Further studies are necessary to clarify the competition between evaporation and combustion phenomena
Cermodel 2017: Modelling and Simulation Meet Innovation in Ceramics Technology: July 26–28, 2017, Trento, Italy
No full textLe Pilae di Vitruvio e gli intonaci bolognesi di età imperiale
No full textIndagini sulla composizione di alcune palline di blu egiziano rinvenute nella città di Bologn
Cermodel 2015: Modelling and Simulation Meet Innovation in Ceramics Technology, July 1-3, 2015, Trento, Italy
No full textAragonite in Roman wall paintings of the VIII Regio, Aemilia and X Regio, Venetia et Histria
No full textAragonite was found in white stripes painted on mural paintings of the Roman period. This is so in VIII and X Regio of Ital
Probabilistic and preferential sampling approaches offer integrated perspectives of Italian forest diversity
Full text linkLifeWatch Italy through Project LifeWatchPLUS [CIR-01_00028]; Free University of Bozen- Bolzano through CONplant Project [TN201H]Alessi, N., Bonari, G., Zannini, P., Jiménez-Alfaro, B., Agrillo, E., Attorre, F., Canullo, R., Casella, L., Cervellini, M., Chelli, S., Di Musciano, M., Guarino, R., Martellos, S., Massimi, M., Venanzoni, R., Zerbe, S., Chiarucci, A
VOCs monitoring of new materials for ceramic tiles decoration: GC–MS analysis of emissions from common vehicles and inkjet inks during firing in laboratory
Full text linkThe decoration of ceramic tiles “ink-jet revolution” has brought significant advantages to tiles manufacturing, but the explosive diffusion, until 4–5 years ago, of this technique has not been accomplished by an adequate scientific research. Among all the features that have to be studied yet, one of the most important is the influence of the new generation inks on the total emission at ceramic chimneys. In this paper, we present a first characterization of emissions from a set of commercial inks and vehicles: they were collected by propter firing of samples in an electric kiln and analyzed by GC–MS. This study is part of a larger research project, which includes the chemical characterization and the evaluation of thermal behavior of inks and vehicles by TG-DTA and other techniques. The obtained results permit to divide common vehicles into 3 classes, depending on their thermal behavior and emissions pattern. Inks, most of which present an ester based formulation, sometimes mixed with glycols or paraffins, follow the behavior of their single components. The most common formulation leads to the presence in the emission pattern of evaporation products (2-ethylhexyl esters of lauric, myristic, decanoic and octanoic acids) and decomposition products (mainly aldehydes and 2-ethyl-1-hexanol)
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