Enhancing filler ratio and thermal conductivity of polyphenylene sulfide composites using molybdenum sulfide and carbon nanotubes: A layer-by-layer hot-pressing approach

Abstract

In this study, we aimed to address challenges in thermal management and structural applications by developing composite materials with enhanced thermal conductivity and insulation properties. Our approach involved combining two-dimensional MoS2 nanosheets with carbon nanotubes (CNTs), leveraging their respective properties to create synergistic effects. MoS2, renowned for its remarkable electrical and mechanical attributes, was synthesized via a hydrothermal reaction and subsequently exfoliated using liquid-phase exfoliation techniques. Meanwhile, CNTs were surface-treated to prevent aggregation and ensure optimal dispersion within the composite matrix. These treated CNTs were then entangled with MoS2 nanosheets to form layered structures, facilitating the creation of efficient heat transfer pathways. The resulting MoS2-CNT composites were fabricated using a hot-pressing method, with polyphenylene sulfide (PPS) layers integrated for structural integrity. Through experimental investigation and characterization, our composites exhibited substantial improvements in thermal conductivity, achieving an impressive 5.77 W/mK. Additionally, the incorporation of PPS layers endowed the composites with insulation properties, further enhancing their suitability for diverse applications. Notably, the composite demonstrated a tensile strength of 67 MPa, indicating its potential for structural applications. This research underscores the promising potential of MoS2-CNT composites in addressing critical challenges in thermal management and structural engineering across various industries, including automotive and electronics. By offering a comprehensive solution that combines enhanced thermal conductivity, mechanical strength, and insulation properties, our composite material opens avenues for innovation in the development of advanced materials for next-generation technologies.

Keywords

• Polyphenylene sulfide
• Molybdenum sulfide
• Carbon nanotube
• Thermal conductivity
• Layered structure