1results about How to "Does not affect properties" patented technology

This invention discloses a composite coating for concrete structures, comprising a sealing primer, an intermediate coat, and a topcoat. The sealing primer is a polyurea coating with modified concrete added, the amount of modified concrete being 3%–6% of the coating weight, and the thickness of the sealing primer being 20–100 μm. The intermediate coat is a polyurethane coating with steel powder added, the amount of steel powder being 3%–6% of the coating weight, and the thickness of the intermediate coat being 80–200 μm. The topcoat is an epoxy resin coating with molybdenum disulfide powder added, the amount of molybdenum disulfide powder being 1%–4% of the coating weight, and the thickness of the topcoat being 50–100 μm. The sealing primer of this composite coating fills concrete pores and cracks, improving structural density and providing a good foundation for subsequent coatings. The intermediate coat enhances overall strength and impact resistance, while the topcoat provides excellent anti-friction properties and chemical stability, blocking external erosion. The synergistic effect of these three components significantly extends the service life of concrete structures in harsh environments.