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Compared to conventional anti-corrosion coatings, spray-applied polyurethane elastomer wear-resistant and anti-corrosion materials can be used in relatively harsh corrosive environments. They offer a longer protection period than conventional wear-resistant anti-corrosion coatings, and possess physical and chemical properties such as high toughness, ease of application, rapid hardening, high strength, good plasticity, resistance to bending fatigue and contact fatigue, low tendency to stick, high wear resistance, corrosion resistance, and self-lubrication. Product features: ① In submerged conditions, the elastic wear-resistant materials manufactured by our company exhibit greater resistance to erosion and wear compared to other elastic wear-resistant materials as well as rigid wear-resistant materials. It can be used properly in slurries with a pH value of 3–11, making it particularly suitable for providing corrosion and wear resistance protection to machinery components. This product not only boasts excellent wear resistance but also good resistance to acids and alkalis. ②It can be used to apply wear- and corrosion-resistant treatments to the surfaces of almost all materials. Spraying can be carried out on substrates of any complex shape, with any thickness within the range of 0.01 mm to 20 mm being achievable in a single application. ③It is an eco-friendly product recognized by relevant agencies in the United States and Europe; it contains no toxic volatile substances and meets the food-grade standards of the United States and Europe. It can also be widely used in the food and pharmaceutical industries. Application areas: ① Automation field: wear-resistant and anti-corrosive noise-reducing coatings for vibratory feeders; room-temperature-curing wear-resistant materials for conveyor deflectors; wear-resistant materials with strong adhesion and anti-adhesive properties for spiral classifiers; wear-resistant and anti-corrosive materials for conveyor rollers; wear resistance for robotic arms; mold protection, etc ； ②Modern transportation: wear-resistant materials for interior linings of street cleaning vehicles, surface coating for fishing boats, wear- and corrosion-resistant coatings for salt/sand containers and extruders ； ③Energy industry: various vibrating screens for mines, slurry pumps, magnetic separation drums, magnetic separators, thickeners, flotation machines, pipeline linings, elbows, spiral agitators, wear-resistant and anti-corrosion coating materials for chutes ； ④Wastewater treatment industry: agitators, filter presses, garbage trucks ； ⑤Water industry: wear-resistant and corrosion-resistant pumps, valves, delivery pipelines, etc ； Other industries: wear and corrosion resistance for medical equipment and food/chemical processing equipment; sterile protection in workshops; radiation shielding in nuclear power plants; wear and corrosion resistance for fan blades in power plants; inner and outer surfaces of metal containers; pipelines, storage tanks in the chemical, steel, and petrochemical industries; cement plant equipment; waste treatment equipment, etc ； In addition to wear and corrosion resistance, spray-applied polyurethane elastomers can also be used as cold-vulcanizing adhesive materials, and are widely applied in the fields of port belt repair, bonding, and conveyor belt bonding and repair. The main difference between spray-applied polyurethane elastomer wear-resistant and anti-corrosion coatings and conventional such coatings lies in their higher level of technical complexity. They require significant technological advancements and product development across various fields. These coatings no longer rely solely on knowledge and experience related to coatings themselves; instead, they depend on knowledge from multiple disciplines such as electronics, physics, ecology, mechanics, instrumentation, and management. The synthesis of highly corrosion-resistant resins, the use of efficient dispersants and rheology modifiers, the development of new types of corrosion-resistant and impermeable pigments and fillers, the use of advanced application tools, as well as techniques for construction and maintenance and on-site testing, all need to be integrated into spray-applied polyurethane elastomer wear-resistant and anti-corrosion coatings. Research on such materials in China is still in its initial stage. The surface treatment of spray-type polyurethane elastomer wear-resistant materials includes degreasing, derusting, and removing surface defects in order to improve the adhesion and corrosion resistance of the coating; therefore, surface treatment is key to achieving good coating results. 1. Oil removal: Removing oil from the surface of metal workpieces enhances the adhesion of various coatings. Methods for oil removal include solvent cleaning, alkali cleaning, and emulsification cleaning (i.e., cleaning with surfactants). 2. Rust removal: Different steel components have varying standards for rust removal, which are determined by the cleanliness of the steel surface after rust removal; different methods of rust removal achieve different levels of cleanliness. There are four different grades of rust: Grade A steel has its surface completely covered with adhered oxide scale, with almost no rust present. The surface of the Grade B steel has begun to rust, and the oxide scale is starting to flake off in patches. The scale on the surface of Grade C steel has rusted or can be scraped off, but slight rust spots are visible to the naked eye. The scale on the surface of Grade D steel has corroded and flaked off; numerous rust spots are visible to the naked eye. According to SISO55900, the surface treatment for these rust grades involves wire brushing and sandblasting for rust removal in accordance with the following quality standards: St – wire brushing rust removal standards St2, St3; Sa – sandblasting rust removal standards Sa1, Sa2, Sa2.5, Sa3. For sandblasting rust removal, all thick layers of rust that need to be removed prior to sandblasting, as well as any visible grease and dirt, must also be eliminated. After sandblasting and rust removal, the surface should be clean, free of dust and debris. Grade Sa1: mild sandblasting for rust removal; the surface must be free of visible oils, dirt, loosely attached scale, rust, paint coatings, and impurities. Grade Sa2 requires thorough sandblasting for rust removal; the surface must be free of visible oils, dirt, scale, rust, paint coatings, and impurities, with any remaining residues adhering firmly to the surface. Sa2.5 level: Very thorough sandblasting for rust removal. The surface should be free of any visible grease, dirt, loosely adhering scale, rust, paint coatings, and impurities. The residue traces show only slight discoid or striated color spots. Grade Sa3 sandblasting for rust removal should result in a clean surface of the steel; there should be no grease, scale, rust, paint coatings, or debris on the surface, and it should have a uniform metallic color. Wire brush rust removal – St St2: thorough manual and power tool rust removal; the surface must be free of any visible grease, dirt, loosely attached oxide scale, rust, paint coatings, or debris. Sa3 involves very thorough manual and power tool-based rust removal. The common method is chemical rust removal: also known as acid cleaning, it involves using acidic solutions to induce chemical reactions that dissolve the rust layer on the surface of the component, thereby achieving rust removal. 3. Common methods for removing old paint films include mechanical removal, removal using alkaline solutions and emulsion washes, removal with organic solvents, and removal using paint removers. 4. Phosphating treatment: The process of treating metal products with solutions of orthophosphoric acid containing iron, manganese, zinc, and cadmium to form an insoluble phosphate protective layer on the surface of the metal products is called metal phosphating treatment. As a standout among wear-resistant and anti-corrosion coatings, spray-applied polyurethane elastomer coatings have seen rapid development since their introduction in the 1970s and 1980s. Their scope of application has expanded steadily, driving innovation in wear-resistant and anti-corrosion coating technologies. By drawing on advancements from industries such as mining, ports, automation, sewage treatment, and chemicals, these coatings incorporate high-tech elements, enabling them to play an increasingly important role; thus, they hold very promising prospects for future development.