Thermal conductivity of porous stones treated with UV light-cured hybrid organic–inorganic methacrylic-based coating. Experimental and fractal modeling procedure
| Autor: | Raffaella Striani, Giorgio Pia, Ludovica Casnedi, Carola Esposito Corcione, Ulrico Umberto Maria Sanna |
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| Přispěvatelé: | Pia, Giorgio, ESPOSITO CORCIONE, Carola, Striani, Raffaella, Casnedi, Ludovica, Sanna, Ulrico |
| Rok vydání: | 2016 |
| Předmět: |
chemistry.chemical_classification
Materials science 020209 energy General Chemical Engineering Organic Chemistry Nanoparticle 02 engineering and technology Substrate (printing) Polymer engineering.material 021001 nanoscience & nanotechnology Surfaces Coatings and Films Thermal conductivity Fractal Coating chemistry 0202 electrical engineering electronic engineering information engineering Materials Chemistry engineering Soft matter Composite material 0210 nano-technology Porosity |
| Zdroj: | Progress in Organic Coatings. 94:105-115 |
| ISSN: | 0300-9440 |
| DOI: | 10.1016/j.porgcoat.2016.02.013 |
| Popis: | This study presents an intermingled fractal model (IFU) capable of simulating the porous microstructure of natural calcareous stone substrate, typical of Apulia Region (Pietra Leccese, PL) used in historical buildings. The developed model is aimed at predicting, by an analytical approach, the thermal conductivity of these materials. To verify the actual ability of the proposed method to predict stone thermal conductivity, the intermingled fractal units model was applied to untreated natural stone, and to the same stone, treated with a novel UV-light curable O–I hybrid coating. The application of hydrophobic polymers to stone materials is, in fact, an effective way to preserve stone artifacts and protect cultural heritage from decay. To this aim, a novel experimental photopolymerizable organic–inorganic (O–I) hybrid protective coating, mainly intended for the protection of PL stone, was previously developed by some of the authors. The innovative hybrid product evidenced an extraordinary hydrophobicity, able to guarantee a very high preservation of the stone from water actions, as well as another important property required to a protective, i.e., a high traspirability of the stone substrate. Furthermore, the experimental product proposed was able to equal the performance of commercial available products, with the adjunctive advantage to be free-solvent. |
| Databáze: | OpenAIRE |
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