▎ 摘　　要

NOVELTY - Preparing modified polysilazane nanocomposite material, comprise grafting nanoparticles with hydroxy groups on the surface with double-end polysiloxane to prepare modified nanoparticles, and, carrying out dehydration condensation reaction of the modified nanoparticles and polysilazane to obtain final product. USE - The modified polysilazane nanocomposite material is useful in hydrophobic, wear-resistant, weather-resistant and temperature-resistant coating for low temperature resistance, anti-icing and high temperature resistance fields (claimed). ADVANTAGE - The modified polysilazane nanocomposite material: overcomes the limitations of previous polysilazane that are not resistant to ice adhesion, super-hydrophobic but wear-resistant; and has low temperature resistance, anti-freezing and high temperature extreme environment. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: modified polysilazane nanocomposite material prepared by above method; and preparing hydrophobic wear-resistant, weather-resistant and temperature-resistant coating, comprises applying the modified polysilazane nanocomposite material to the surface of the substrate, and curing at 10-120 ℃ for 12-36 hours to obtain hydrophobic, wear-resistant, weather-resistant and temperature-resistant coating, preferably the base material includes metal, ceramic, glass, plastic, polymer and/or composite material.