Special materials for radar wave absorption (RWA) and stealth camouflage techniques are desired, because of their widespread applications in the military field. In this paper, silanized MoS2 (M/MoS2)/reduced graphene oxide (rGO) nanosheets were synthesized via ultrasonic and graft methods. The complex permittivity, Cole–Cole plots, and reflection loss (RL) curve and 3D RL plots indicate that the nanosheets have remarkable absorption properties. When the content of (M/MoS2)/rGO was 18 wt %, (M/MoS2)/rGO–wax composites exhibited an effective radar absorption bandwidth of 5.81 GHz at a thickness of 2.5 mm and a maximum RL of −49.7 dB. (M/MoS2)/rGO composites could be used as promising materials for RWA and broad absorption properties.

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A super hydrophobic cotton fabric was successfully prepared by a facile dip‐coating method using a synthetic fluorine‐free and UV curable super hydrophobic coating solution without additional particles. The obtained cotton fabric exhibited super hydrophobic property with a water contact angle above 159.5° and sliding angle 7.5°. Moreover, the treated cotton fabric could retain its super hydrophobic performance even after abrasion and accelerated laundering, as well as for different kinds of corrosive liquids. The coated cotton fabric was used to make up a surface tension‐driven, gravity‐assisted, floating oil–water separation device with separation efficiency above 99%. Additionally, the oil–water separation efficiency of super hydrophobic cotton fabric always was above 98% after 30 recycle times for cyclohexane–water mixture. POLYM. ENG. SCI., 59:E452–E459, 2019. © 2019 Society of Plastics Engineers

In this work, a flower clusters-like superhydrophobic surface was fabricated via an ultraviolet (UV) curable coating of octadecylamine (ODA) and vinyl-terminated polydimethylsiloxane (V-PDMS). ODA self-assembled into many flower clusters-like structures on the surface of the coating, increasing the roughness of the coating surface without additional nanoparticles. V-PDMS formed a highly crosslinked network under a UV lamp, which would be helpful for a robust superhydrophobic surface. The obtained PDMS/ODA fabric showed water contact angle of 161 and sliding angle of 5 . The durability of the superhydrophobic surface was tested by water impacting, tube brush scrubbing, knife scratching, hand twisting, finger pressing, tape adhesion, abrasion, continuous rinsing, and chemical conditions. The experimental results indicated that the superhydrophobic surface have good durability for long service life. Moreover, the PDMS/ODA fabric could selectively absorb oils from water with good separation performance. This work will provide a facile, low cost, and versatile method to prepare superhydrophobic surfaces, and enhance their efficiency of oil-water separation.