Mechanical and Thermal Performance of In-Situ Synthesized PDMS-SiO2 Composite as Electrical Insulating Coatings

Molecules, Journal Year: 2025, Volume and Issue: 30(10), P. 2107 - 2107

Published: May 9, 2025

Polydimethylsiloxane (PDMS) has been extensively employed in electrical insulation applications owing to its excellent thermal stability, hydrophobicity, and dielectric properties. However, inherent mechanical limitations require structural reinforcement enhance performance under more demanding operational conditions. In this study, the mechanical, thermal, surface properties of PDMS-SiO2 nanocomposites synthesized via situ sol–gel process was systematically investigated. The influence different SiO2 nanoparticle concentrations (5, 10, 15 wt%), catalyst type (acidic alkaline), tetraethyl orthosilicate (TEOS) crosslinking agent ratios (15:1, 10:1, 5:1) evaluated. Tensile testing, dynamic analysis (DMA), thermogravimetric (TGA) revealed that incorporation notably improved both strength stability composites. 5-15b 10-15a composites exhibited highest tensile stress viscoelastic modulus among all samples. Furthermore, retained key functional properties, including high volumetric resistivity (~1011 Ω·cm), strong adhesion. These findings confirm potential for use as high-performance insulating coatings advanced applications.

Language: Английский

Carbon Black-Modified Polyvinylidene Fluoride Vapor-Induced Phase Separation Membranes for Effective Direct Contact Membrane Distillation

Journal of Membrane Science, Journal Year: 2025, Volume and Issue: 732, P. 124262 - 124262

Published: May 26, 2025

Language: Английский