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Thermal Characteristics of TIO2 Nanocomposite in a Polyurethane Matrix Made with Castor Oil
Características térmicas de un nanocompuesto de TIO2 en una matriz de poliuretano elaborada con aceite de higuerilla
dc.contributor.author | Gordillo Delgado, Fernando | |
dc.contributor.author | Hernández Zarta, Hector Hernán | |
dc.date.accessioned | 2023-11-28T16:26:11Z | |
dc.date.available | 2023-11-28T16:26:11Z | |
dc.date.created | 2020-10-23 | |
dc.identifier.issn | 1692-3324 | |
dc.identifier.uri | http://hdl.handle.net/11407/8206 | |
dc.description | Nanocomposites are multiphase structures with at least one pase dimension of nanometric order size. Polymer-based materials mixed with low proportions of titanium dioxide nanoparticles (NPs-TiO2) are a versatile alternative in different industrial applications, considering the optimization of mechanical and thermal properties with respect to pure polymers and conventional materials. In this work, the synthesis and thermal characteristics measurement of a nanocomposite formed by anatase phase Nps-TiO2 of 5 nm particle size in a polyurethane matrix is reported. The polymeric matrix was obtained through the reaction between the self-condensation of castor oil and diphenylmethane diisocyanate (MDI), while sol-gel technique was used in the synthesis of NPs-TiO2, using titanium (IV)-bis(acetylacetonate) diisopropoxide as precursor. Specific heat (Cp) of the samples was measured by means of the thermal relaxation method and thermal diffusivity (α) was determined with the photoacoustic technique. Cp of the nanocomposite increased by 12.98 % due to addition of the NPs, while α decreased by 98.63 %, compared to corresponding values of the polyurethane matrix. With a concentration of 3 wt % of NPs-TiO2 in the matrix, these termal parameters were found below average values of conventional plastics. | eng |
dc.description | Los nanocompuestos son estructuras multifásicas con por lo menos una dimensión de una de las fases de tamaño de orden nanométrico. Los materiales de base polimérica, mezclados con bajas proporciones de nanopartículas de dióxido de titanio (Nps-TiO2), son una alternativa versátil en diferentes aplicaciones industriales, considerando la optimización de propiedades mecánicas y térmicas con respecto a polímeros puros y materiales convencionales. En este trabajo se reportan la síntesis y la medición de características térmicas de un nanocompuesto conformado por NPs-TiO2, fase anatasa de tamaño de partícula de 5 nm, en una matriz de poliuretano, elaborada con aceite de higuerilla. La matriz polimérica se obtuvo a través de la reacción entre la autocondensación del aceite de higuerilla y diisocianato de difenilmetano (MDI), mientras que en la síntesis de las NPs-TiO2 se usó la técnica sol-gel, utilizando como precursor titanio (IV)-bis(acetilacetonato) diisopropóxido. El calor específico (Cp) de las muestras fue medido por medio del método de relajación térmica y con la técnica fotoacústica se determinó la difusividad térmica (α). Con la adición de las NPs el Cp del nanocompuesto aumentó en 12.98 %, mientras que la α disminuyó en 98,63 %, en comparación con los correspondientes valores obtenidos para la matriz de poliuretano. Con una concentración del 3 % en peso de NPs-TiO2 en la matriz se encontraron parámetros térmicos por debajo de los valores promedio de los plásticos convencionales. | spa |
dc.format | ||
dc.format.extent | p. 147-165 | |
dc.format.medium | Electrónico | |
dc.format.mimetype | application/pdf | |
dc.language.iso | spa | |
dc.publisher | Universidad de Medellín | |
dc.relation.ispartofseries | Revista Ingenierías Universidad de Medellín; Vol. 20 No. 39 (2021) | |
dc.relation.haspart | Revista Ingenierías Universidad de Medellín; Vol. 20 Núm. 39 julio-diciembre 2021 | |
dc.relation.uri | https://revistas.udem.edu.co/index.php/ingenierias/article/view/3263 | |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0 | * |
dc.source | Revista Ingenierías Universidad de Medellín; Vol. 20 No. 39 (2021): (julio-diciembre); 147-165 | |
dc.subject | Thermal conductivity | eng |
dc.subject | Diffusivity | eng |
dc.subject | Effusiveness | eng |
dc.subject | Photoacoustic | eng |
dc.subject | Nanocompositos | eng |
dc.subject | Polymer | eng |
dc.subject | Thermal relaxation | eng |
dc.subject | Conductividad térmica | spa |
dc.subject | difusividad | spa |
dc.subject | Efusividad | spa |
dc.subject | Fotoacústica | spa |
dc.subject | Nanocompuestos | spa |
dc.subject | Polímero | spa |
dc.subject | Relajación térmica | spa |
dc.title | Thermal Characteristics of TIO2 Nanocomposite in a Polyurethane Matrix Made with Castor Oil | eng |
dc.title | Características térmicas de un nanocompuesto de TIO2 en una matriz de poliuretano elaborada con aceite de higuerilla | spa |
dc.type | article | |
dc.identifier.doi | https://doi.org/10.22395/rium.v20n39a9 | |
dc.relation.citationvolume | 20 | |
dc.relation.citationissue | 39 | |
dc.relation.citationstartpage | 147 | |
dc.relation.citationendpage | 165 | |
dc.audience | Comunidad Universidad de Medellín | |
dc.publisher.faculty | Facultad de Ingenierías | |
dc.coverage | Lat: 06 15 00 N degrees minutes Lat: 6.2500 decimal degreesLong: 075 36 00 W degrees minutes Long: -75.6000 decimal degrees | |
dc.publisher.place | Medellín | |
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dc.rights.creativecommons | Attribution-NonCommercial-NoDerivatives 4.0 International | * |
dc.identifier.eissn | 2248-4094 | |
dc.type.coar | http://purl.org/coar/resource_type/c_6501 | |
dc.type.version | info:eu-repo/semantics/publishedVersion | |
dc.type.local | Artículo científico | |
dc.type.driver | info:eu-repo/semantics/article | |
dc.identifier.reponame | reponame:Repositorio Institucional Universidad de Medellín | |
dc.identifier.repourl | repourl:https://repository.udem.edu.co/ | |
dc.identifier.instname | instname:Universidad de Medellín |