XVII-ICSMV

IN-SITU SYNTHESIZED SIO2 NANOPARTICLES AS SILICON POLYMERIC COMPOSITE MODIFIERS FOR IMPROVED MECHANICAL RESPONSE

Not scheduled

1h 30m

Museo Caracol (Ensenada, México)

Oral Nanostructures NANOSTRUCTURES

Speaker

Aldo Córdoba Guerrero (Graduate and Research Division, Engineering Faculty, Universidad Autónoma de Querétaro, Cerro de las Campanas, Queretaro 76010, Mexico.)

Description

The increasing demand for polymeric materials in various industries, including packaging, automotive, and electronics, has driven the need for improved mechanical properties in these materials. In the electrical industry, mechanical fatigue in insulating polymer coatings is a significant concern, leading to reduced electrical resistivity and potential safety hazards. This research focuses on enhancing the mechanical response of polydimethylsiloxane (PDMS) coatings, commonly used as electrical insulators, by incorporating SiO2 nanoparticles synthesized in-situ through the sol-gel method. The investigation seeks to improve the interaction between polymer chains and nanostructures, thereby enhancing mechanical properties without compromising hydrophobicity properties. SiO2 nanoparticles were synthesized in both acidic and alkaline media, and PDMS-SiO2 nanocomposites were prepared using an in-situ sol-gel method. Characterization techniques such as Raman, FT-IR, and XPS were employed to analyze the physicochemical properties of the nanoparticles and nanocomposites. The results revealed distinct morphological and chemical differences between nanoparticles synthesized in acidic and alkaline media. Preliminary mechanical tests on the nanocomposites demonstrated a significant improvement in tensile strength, particularly in the composite with the highest SiO2 concentration (PDMS 5-15b). This research contributes to the development of advanced polymer nanocomposites with enhanced mechanical properties for electrical insulation applications, addressing the industry's need for more durable and reliable insulating materials.

Reference

: A. Córdoba, J. V. Cauich-Rodríguez, R. F. Vargas-Coronado, R. Velázquez-Castillo, and K. Esquivel. A Novel In Situ Sol-Gel Synthesis Method for PDMS Composites Reinforced with Silica Nanoparticles. Polymers (Basel) 16 (8) (1125) (2024). https://doi.org/10.3390/polym16081125.

This work was supported by

Universidad Autónoma de Querétaro (FONFIVE-2024)

Presentation materials

263-3-IN-SITU SYNTHESIZED SIO2 NANOPARTICLES AS SILICON POLYMERIC COMPOSITE MODIFIERS FOR IMPROVED MECHANICAL RESPONSE .pptx