Details

Autor(en) / Beteiligte

• Gou, Bin
• Xie, Congzhen
• Wang, Rui
• Xu, Huasong
• Zhou, Jiangang
• Li, Licheng

Titel

Core-double-shell CNTs@SO@PDA and Functionalized BNNS as Nano-hybrids for Synergistically Enhancing Mechanical and Breakdown Performances of Epoxy with Sandwich-like Structure

Ist Teil von

• Fibers and Polymers, 2022, 23(7), , pp.2030-2041

Ort / Verlag

Seoul: The Korean Fiber Society

Erscheinungsjahr

2022

Quelle

SpringerLink

Beschreibungen/Notizen

• Carbon-based nanofillers reinforced composites with superb mechanical and electric properties are of growing importance in numerous applications. However, the ultra-high conductivities of carbon-based nanofillers will severely degrade the insulating performance of the polymer, restricting the implementation in electronic domain and power system. Herein, core-double-shell carbon nanotubes coated with silica and polydopamine (CNTs@SO@PDA) are prepared, significantly improving the tensile strength of the composite while maintaining its insulating property. Meanwhile, the sandwich-structured composite which is consisted of CNTs@SO@PDA/epoxy as central layer and boron nitride nanosheets coated by polydopamine (BNNS@PDA) filled epoxy as shielding layers achieved excellent breakdown strength of 19.5 kV/mm as well as superb tensile strength of 64.84 MPa, increasing about 13.37 % and 24.24 % compared with neat epoxy respectively. The simulation results demonstrate the electric field optimization and redistribution effect of sandwich-structured nanocomposites. This work provides a method for fabricating epoxy nanocomposite with marvelous mechanical and insulating properties, which can be applied to future electronic protectors and insulation equipment.