Preparation of hierarchical MoS2 microsphere/BN composites for microwave absorption and thermal management

The increasing utilization of Infrared heat detection technology in military applications necessitates research on composites with enhanced thermal transmission performance and microwave absorption capabilities. This study satisfactorily fabricated a series of MoS2/BN-xyz composites (MoS2/BN-xyz composites are characterized by the weight ratio of MoS2 to BN in the composite, where xy:z denotes this ratio) through chemical vapor deposition, resulting in improved thermal stability and thermal transmission performance. The results showed that the remaining mass of MoS2/BN-101 was as high as 69.25wt% at 800℃ under air atmosphere, while maintaining a temperature difference of only 31.7℃ between the surface temperature and the heating source at a heating temperature of 200℃. Furthermore, MoS2/BN-301 exhibited an impressive minimum reflection loss value of −32.21 dB at 4.0 mm, along with a wide effective attenuation bandwidth (EAB)  ranging from 9.32 GHz to 18.00 GHz (8.68 GHz). Therefore, these simplified synthesized MoS2/BN-xyz composites demonstrate great potential as highly efficient contenders for enhancing both microwave absorption performance (MAP) and thermal conductance.