The present invention relates to a sol-gel coating composition comprising conductive fillers, intended to make a culinary article compatible with induction.

Provided are an abrasion-resistant, stable and flame-resistant superhydrophobic/superoleophobic coating, and a preparation and application thereof, belonging to the field of new materials; the preparation includes: taking a superhydrophobic/superoleophobic suspension as a top-layer spraying solution; dispersing epoxy resin in a solvent, and adding a fluorine-containing curing agent and a flame retardant for reaction to obtain a bottom-layer spraying solution; and first spraying the bottom-layer spraying solution to a surface of a substrate, then spraying the top-layer spraying solution, and drying the surface to obtain a bilayer abrasion-resistant superhydrophobic flame-resistant coating; the superhydrophobic/superoleophobic suspension contains multi-level micro nano structural particles, a fluorine-containing curing agent and fluorinated epoxy resin; the prepared single-layer coating and bilayer structure (BLC) have hydrophobicity, flame resistance, good mechanical properties and excellent corrosion resistance performance.

An example according to the present invention provides a method of electrostatically coating nanoparticles at high speed including: a step S100 of preparing a dispersion solution including the nanoparticles charged with a charge opposite to that of a substrate; a step S200 of adding acid for increasing a proton concentration of the dispersion solution; a step S300 of coating the nanoparticles on the substrate; and a step S400 of removing a solution of the coated substrate.

The disclosure relates to a coating composition comprising a resin system comprising an organic film-forming resin and optionally a curing agent reactive with the organic film-forming resin, a lithium salt with a solubility in water in the range from 0.01 to 120 g/L at 20 C., selected from the group consisting of lithium carbonate, lithium phosphate, lithium bicarbonate, lithium tetraborate, and lithium oxalate, and a zinc salt of 2,5-dimercapto-1,3,4-thiadiazole (DMTD), wherein the zinc salt of DMTD is present as solid particles, the surface of which is at least partially covered by a layer of a film-formed polymer. The zinc salt of DMTD was shown to have a synergistic effect on reinforcement of barrier properties of a protective layer that is formed in a coating defect due to the presence of the lithium salt. In addition, the coating composition has an improved pot life.

The disclosure relates to a coating composition comprising a resin system comprising an organic film-forming resin and optionally a curing agent reactive with the organic film-forming resin, a lithium salt with a solubility in water in the range from 0.01 to 120 g/L at 20 C., selected from the group consisting of lithium carbonate, lithium phosphate, lithium bicarbonate, lithium tetraborate, and lithium oxalate, and a zinc salt of 2,5-dimercapto-1,3,4-thiadiazole (DMTD), wherein the zinc salt of DMTD is present as solid particles, the surface of which is at least partially covered by a layer of a film-formed polymer. The zinc salt of DMTD was shown to have a synergistic effect on reinforcement of barrier properties of a protective layer that is formed in a coating defect due to the presence of the lithium salt. In addition, the coating composition has an improved pot life.

Provided are an abrasion-resistant, stable and flame-resistant superhydrophobic/superoleophobic coating, and a preparation and application thereof, belonging to the field of new materials; the preparation includes: taking a superhydrophobic/superoleophobic suspension as a top-layer spraying solution; dispersing epoxy resin in a solvent, and adding a fluorine-containing curing agent and a flame retardant for reaction to obtain a bottom-layer spraying solution; and first spraying the bottom-layer spraying solution to a surface of a substrate, then spraying the top-layer spraying solution, and drying the surface to obtain a bilayer abrasion-resistant superhydrophobic flame-resistant coating; the superhydrophobic/superoleophobic suspension contains multi-level micro nano structural particles, a fluorine-containing curing agent and fluorinated epoxy resin; the prepared single-layer coating and bilayer structure (BLC) have hydrophobicity, flame resistance, good mechanical properties and excellent corrosion resistance performance.

An example according to the present invention provides a method of electrostatically coating nanoparticles at high speed including: a step S100 of preparing a dispersion solution including the nanoparticles charged with a charge opposite to that of a substrate; a step S200 of adding acid for increasing a proton concentration of the dispersion solution; a step S300 of coating the nanoparticles on the substrate; and a step S400 of removing a solution of the coated substrate.