Consistent Thermal Conductivities of Spring‐Like Structured Polydimethylsiloxane Composites under Large Deformation

Abstract Flexible and highly thermally conductive materials with consistent thermal conductivity ( λ ) during large deformation are urgently required to address the heat accumulation in flexible electronics. In this study, spring‐like thermal conduction pathways of silver nanowire (S‐AgNW) fabricated by 3D printing are compounded with polydimethylsiloxane (PDMS) to prepare S‐AgNW/PDMS composites with excellent and consistent λ during deformation. The S‐AgNW/PDMS composites exhibit a λ of 7.63 W m −1 K −1 at an AgNW amount of 20 vol%, which is ≈42 times that of PDMS (0.18 W m −1 K −1 ) and higher than that of AgNW/PDMS composites with the same amount and random dispersion of AgNW (R‐AgNW/PDMS) (5.37 W m −1 K −1…

• NS
  Natural Science Foundation of Chongqing

  Award: 2023NSCQ‐MSX2547
• FR
  Fundamental Research Funds for the Central Universities

  Awards: D5000240077, D5000240067
• NS
  Natural Science Basic Research Program of Shaanxi Province

  Award: 2024JC‐TBZC‐04