Synergistic optimization of multifunctionality in composite through continuous manufacturing of honeycomb-structured carbon fiber@ZIF-67

Carbon fiber reinforced polyether ether ketone (CF/PEEK) composites possess significant potential in the electronic information sector, where high demands for the integration of structural functionality are placed. This requirement endows the composites with not only superior interfacial structural properties but also excellent electromagnetic protection and thermal conductivity (TC). However, achieving synergistic optimization of structure and multifunctionality in composites is challenging. In this study, we fabricated CF@ZIF-67 through continuous manufacturing, leveraging its unique honeycomb structure to penetrate the resin matrix and enhance interfacial performance. The interlaminar shear strength (ILSS) of the CF@ZIF-67-3/PEEK composite reached a remarkable 101.96 MPa. Due to its high electrical conductivity, CF@ZIF-67 is an ideal candidate for constructing an efficient conductive network in electromagnetic protection. It enhances the transport efficiency of electrons and phonons within the matrix, thereby establishing a robust TC network. This enhancement led to a 68.52 % increase in the TC and a 28.39 % improvement in electromagnetic interference (EMI) shielding performance. Moreover, CF@ZIF-67 exhibited remarkable electromagnetic wave (EMW) absorption capabilities, achieving a minimum reflection loss (RL_min) of −69.40 dB and an effective absorption bandwidth (EAB) of 4.88 GHz. The approach of creating interfacial/thermal/electrical pathways presents a highly potential direction for the advancement of high-performance multifunctional materials in electronic applications.