Preparation method of fouling resistant coating for highway barrier

Abstract

The invention belongs to the field of fine chemical coatings, and discloses a preparation method of a fouling resistant coating for a highway barrier. The method comprises the following steps of: firstly preparing a phosphate-group-containing hydroxyl acrylic acid water dispersion, then preparing nanometer TiO2 dispersion slurry which is stable in performance, and finally preparing an ingredient A by dispersing and grinding the nanometer TiO2 dispersion slurry, the phosphate-group-containing hydroxyl acrylic acid water dispersion, an ultraviolet absorber, a solvent, a pigment filler and other auxiliaries in proportions. The coating for the highway barrier prepared from the ingredient A and an aliphatic isocyanate curing agent (ingredient B) can be easily coated thick; the coated film has the characteristics of good weather resistance, strong fouling resistance, and excellent corrosion resistance; the shortcomings that coating equipment needs to be fixed, a barrier plate needs to be repaired, the field maintenance is difficult, and the decoration performance is poor in the traditional coating construction for the highway are avoided; and therefore the coating can be widely applied to the highway barrier facilities of barrier plates, upright posts, bolts and the like, and also can be widely applied to the protection of large-sized construction machinery and other outdoor steel structures.

Description

technical field

[0001] The invention belongs to the field of fine chemical coatings, and in particular relates to a preparation method of a stain-resistant highway guardrail coating. Background technique

[0002] Highway guardrail is an important facility to maintain highway order and ensure driving safety. On the one hand, it plays a protective role in preventing cars from overturning and rushing out of the highway; . At present, the highway guardrail is in the harsh outdoor environment and has been exposed to sunlight, wind and rain erosion, seasonal temperature changes and environmental media. The anti-corrosion life of many guardrail coatings is greatly shortened, and the decorative appearance is reduced, which seriously reduces the protective performance of the guardrail. . At the same time, with the rapid development of my country's economy, the tonnage of domestic long-distance diesel transport vehicles is increasing, and the unburned hydrocarbons and other tiny par...

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