Integrated Protection and Decoration Solution for Polyurea Spraying on Stadium Stands

Material Properties

1. Outstanding Mechanical PerformancePolyurea boasts high tensile strength, high tear strength and excellent elasticity. It can withstand external impacts and friction caused by frequent foot traffic, seat installation and removal, as well as various events on the stands. This effectively prevents cracks, damage and other defects on the stand surface, ensuring the long-term stable use of the stands.

2. Excellent Weather ResistanceIt can be exposed to outdoor environments for extended periods without being affected by natural factors such as UV radiation, wind, rain, ice and snow. No discoloration, fading, chalking or cracking will occur, and it can always maintain good appearance and performance. This greatly reduces the frequency of repairs and replacements, cutting down maintenance costs.

3. Strong Chemical Corrosion ResistanceIt has excellent resistance to various chemical substances that may come into contact with the stand surface, such as acid rain, beverages and oil stains. It can effectively prevent chemical corrosion of the stand substrate, protecting the structural integrity and safety of the stands.

4. Good Slip ResistanceBy adjusting the formula and construction process of polyurea materials, a coating with certain roughness and friction can be formed on the stand surface. Even in wet or oily conditions, it can provide good slip resistance for spectators, reducing the occurrence of slip accidents.

Construction Technology

1. Substrate TreatmentFirst, conduct a comprehensive cleaning of the stand surface to remove oil stains, dust, loose concrete and other impurities. Then, grind and repair uneven areas to ensure the substrate surface is flat, firm and dry, so as to guarantee strong adhesion between the polyurea coating and the substrate.

2. Primer ApplicationEvenly apply a special primer on the treated substrate. The primer functions to seal the pores of the substrate, enhance the bonding force between the polyurea coating and the substrate, and also play a role in rust and moisture prevention. Primers are generally applied by rolling or brushing, and sufficient drying and curing time must be allowed after application.

3. Polyurea SprayingUse professional high-pressure airless spraying equipment to evenly spray polyurea materials on the primer surface according to design requirements. During the spraying process, strictly control the moving speed, spraying distance and angle of the spray gun to ensure uniform coating thickness without missed spraying or sagging. The thickness of polyurea coating for general stands ranges from 1.5–3mm, and the specific thickness can be determined based on actual needs.

4. Topcoat ApplicationAfter the polyurea coating cures, a topcoat can be applied if necessary to improve the glossiness, stain resistance and decorative effect of the coating. Topcoats usually adopt weather-resistant materials such as acrylic polyurethane, and the application method can be selected between spraying or rolling according to actual conditions.

Advantages

1. High Construction EfficiencyPolyurea materials feature rapid curing. They can achieve surface drying within seconds to minutes after spraying, enabling large-area spraying construction to be completed in a short time. This greatly shortens the construction period and reduces the impact on the normal use of the stadium.

2. Environmentally Friendly & Pollution-FreePolyurea materials produce little to no volatile organic compounds (VOCs) during production and construction, complying with environmental protection requirements. They pose minimal harm to construction workers and the surrounding environment, making them a green and eco-friendly construction material.

3. Integrated Seamless CoatingPolyurea spraying can form a continuous, seamless coating, effectively avoiding leakage, cracking and other problems that tend to occur at the joints of traditional materials. This improves the waterproof performance and overall aesthetics of the stands.

4. Long Service LifeThanks to the excellent properties of polyurea materials and high-quality construction, the service life of stadium stands coated with polyurea can reach 20 years or even longer, significantly saving long-term repair and replacement costs.

Application Cases

1. Large Comprehensive StadiumsVenues such as the Beijing National Stadium (Bird's Nest) and the main stadium of the Guangzhou Asian Games have all adopted polyurea spraying technology for their stands. It not only provides spectators with a comfortable and safe viewing environment, but after years of use, the polyurea coatings on the stands still maintain excellent performance and appearance.

2. Professional Football StadiumsPolyurea spraying technology is also widely used on the stands of many professional football stadiums at home and abroad, such as Old Trafford (home stadium of Manchester United in the Premier League) and Allianz Arena (home stadium of Bayern Munich in the Bundesliga). Under the long-term pressure of large crowds of spectators, the polyurea coatings on their stands remain sturdy, durable, attractive and elegant.

3. Multi-Functional GymnasiumsFor multi-functional gymnasiums that host various sports events such as basketball, volleyball and badminton, as well as cultural performances and exhibitions, stands coated with polyurea can meet the needs of different events while facilitating daily cleaning and maintenance.