2026-06-17T20:17:02Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/92772024-06-18T00:05:19Zcom_10259_4313com_10259_5086com_10259_2604col_10259_4314

Rubio Aguinaga, Andrea Reglero Ruiz, José Antonio García Gómez, Alejandra Peña Martín, Elisa Ando, Shinji Muñoz Santamaría, María Asunción García Pérez, José Miguel Trigo López, Miriam 2024-06-17T09:24:22Z 2024-06-17T09:24:22Z 2023-09-29 0266-3538 http://hdl.handle.net/10259/9277 10.1016/j.compscitech.2023.110211 Aramids are materials with high-performance properties and used in advanced applications, including bulletproof vests and aerospace industry components. Consequently, research is focused on improving their properties and reducing their density to achieve fuel reduction and enhanced comfort. Herein we describe the preparation of dense, micro, and nanoporous aramid films containing hexagonal boron nitride (hBN) with two objectives: improving mechanical performance and increasing thermal conductivity (TC) in porous films for specific applications. The preparation procedure is simple and scalable, involving the addition of hBN and a porosity promoter to control the porous structure in the film's casting solution. Tensile tests revealed that the inclusion of 10% of hBN in microporous aramids led to a 130% increase in Young's modulus and 63% reduction in material's density compared to the dense commercial aramid. The orientation of the hBN in the films was also evaluated by considering the XRD and the thermal properties of the films. The films containing hBN exhibited enhanced TC and thermal diffusivity (TD) together with a very low density and improved mechanical performance, which can benefit applications in the aerospace industry, protective equipment, and battery separators. This work was supported by the Regional Government of Castilla y León (Junta de Castilla y León), the Ministry of Science and Innovation MICIN and the European Union NextGenerationEU/PRTR, and the Spanish Agencia Estatal de Investigación (State Research Agency) (PID2019-108583RJ-I00/AEI/10.13039/501100011033). application/pdf eng Elsevier Composites Science and Technology. 2023, V. 242, 110211 https://doi.org/10.1016/j.compscitech.2023.110211 Atribución 4.0 Internacional http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess Particle-reinforced composites Mechanical properties Elastic properties Scanning electron microscopy (SEM) Polymer solution casting Química inorgánica Materiales Polímeros Chemistry, Inorganic Materials Polymers Boron nitride-reinforced porous aramid composites with enhanced mechanical performance and thermal conductivity info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Composites Science and Technology 242