Disclosed is a method for preparing a hydrate prevention coating layer, comprising adding polytetrafluoroethylene, polyphenylene sulfide and hydrophobic fumed silica into a dispersing agent for ultrasonic dispersion to obtain a dispersion solution; stirring the dispersion solution with a magnetic stirrer, and at the same time, adding dropwise a levelling thickener and stirring same until uniform to obtain a hydrate prevention coating; then immersing a pre-treated substrate in the coating, taking same out, standing same for natural levelling and drying; and subjecting same to high-temperature sintering, so as to obtain the hydrate prevention coating layer

Hydrate prevention coating layer and preparation method therefor

The invention discloses a stain-resistant high-temperature liquid asphalt coating and a preparation method thereof, belonging to the technical field of stain-resistant coatings. The preparation methodcomprises the following steps: firstly, mixing a solvent, polyphenylene sulfide, a structural blending agent and an additive in proportion to prepare slurry; mixing the slurry with a hydrophobic modifier to prepare a coating; and coating the surface of a pre-treated substrate with the coating, and heating and preserving the temperature for a period of time and cooling to room temperature to obtain the stain-resistant high-temperature liquid asphalt coating. The stain-resistant high-temperature liquid asphalt coating provided by the invention meets the using demand in a high-temperature liquidasphalt environment; the coating and the substrate material form a good interlaminar bonding force, a hydrophobic surface is formed on the surface of the coating, the stain-resistant performance of the compound coating is improved, and the stain area of the high-temperature liquid asphalt is smaller than 10%.

Stain-resistant high-temperature liquid asphalt coating and preparation method thereof

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Stain-resistant high-temperature liquid asphalt coating and preparation method thereof