A superhydrophobic material was prepared by a simple and easily accessed sol-gel method using epoxy resin (E-51) and γ-aminopropyltriethoxysilane (KH-550) as the precursors, aqueous ammonia (NH₄OH) as the catalyst and hydrogenated silicone oil (PMHS) as the hydrophobic modifier, and then pelleting the final product. The morphologies, surface chemical properties and thermal stability of the superhydrophobic bulk materials were characterized by scanning electron microscopy, Fourier infrared spectrometry and thermal analyzer. The hydrophobic properties and repairability of the as-prepared materials were also studied. The results showed that the prepared epoxy resin-hydrogenated silicone oil bulk materials were composed of tightly bound nanoparticles with a size of 50–100 nm in diameter. The material showed excellent superhydrophobic properties with a surface contact angle of 152°. The material also had good thermal resistance with a heat-resistant temperature of 300 °C and showed good repairability. The epoxy resin-hydrogenated silicone oil bulk superhydrophobic material exhibited excellent performance and showed wide application prospects.

Polymethyltriethoxysilane-polymethylhydrosiloxane superhydrophobic coatings were fabricated on glass substrates by spraying technology, where the precursor mixtures contained polymethyltriethoxysilane nanoparticles obtained by the sol-gel method, and its surface was modified by polymethylhydrosiloxan (PMHS). The structure, morphologies, and hydrophobic properties of the superhydrophobic coatings were investigated by the infrared spectrometer, scanning electron microscope, and water contact angle measurement. Moreover, the effects of component ratio, solvent amount, and reaction time on the coating hydrophobic properties were investigated. 1:1.2 of component ratio, 60 mL of solvent, and 8 h of reaction time were the optimal experimental parameters, and the water contact angle of this coating was about 153°. Meanwhile, polymethyltriethoxysilane-polymethylhydrosiloxane coating showed good thermal stability and self-cleaning property. The excellent superhydrophobicity of the coating might result from the micro-nano rough structure. The results presented in this work might provide a simple, low-cost, and environmentally-friendly approach for application in the fields of anti-sticking, anticontamination, and self-cleaning to anti-corrosion. Graphical Abstract