Polyurea protective material is a branch of polyurethane protective material. It has the commonality of polyurethane protective materials. For example, good waterproof, anti-corrosion, wear-resistant and other properties. But it also has its uniqueness. For example, the response speed is fast, and the thickness can be sprayed on any plane, elevation or curved surface. The coating has good mechanical properties, and the construction speed is more than 10 times higher than that of polyurethane materials.
Spraying polyurea has completely different mechanical properties according to different uses, and auxiliary materials must be provided during construction to achieve the construction effect.
- Polyurea for waterproofing
- Polyurea for anticorrosion
- Polyurea for wear-resistant floor, etc.
- Introduction of supporting accessories: The application technology of spraying polyurea is a systematic project, and there are many factors that affect the quality of the project. One of the important factors is the quality of the substrate. In order to ensure that the base surface is smooth, firm and moisture-tight (bubbles will be generated when moisture is released), some auxiliary materials are required, such as putty, primer, mesh cloth, etc.
The construction process of spraying polyurea varies according to the specific application scenarios and uses. But its main process and basic method are similar.
- Surface treatment
- Spray primer
- Special putty for scraping
- Spray polyurea protective coating
- Repair
The main fields of application of polyurea are waterproof, anti-corrosion and wear-resistant. Its application fields and scenarios are constantly being developed.
- Waterproof engineering: mainly used for underground (subways, tunnels, coal mines, garages, etc.), roofs (metal roofs, concrete roofs, wooden roofs, tile roofs, etc.) and walls, kitchens and bathrooms of industrial and civil buildings. It is also widely used in water parks, stadiums, pools, swimming pools and other waterproof projects.
- Anti-corrosion engineering: used for concrete anti-corrosion, metal anti-corrosion (steel structure, steel tank, aluminum alloy, etc.), marine ships, equipment, marine construction, municipal sewage pipelines, oil pipelines, gas pipelines and other pipelines.
- Wear-resistant engineering: mining equipment, wear-resistant floor, vehicle engineering wear-resistant, ship deck wear-resistant, etc.
- Anti-carbonization structures: bridges, dams, cooling towers and other exposed concrete structures.
- Damping engineering, vibration reduction engineering. It can be used for vibration and noise reduction of high-speed rail trains, ships, and various buildings.
- Military engineering: It can be applied to the anti-damage protection of armor, ships, military vehicles, artillery bodies, military caverns, etc., the chassis and body of military vehicles such as tanks, armored vehicles, and off-road vehicles are bulletproof and explosion-proof, etc.
The excellent performance of sprayed polyurea protective materials has been gradually recognized by engineering circles. There are more and more experts and scholars studying spray polyurea materials and their applications. The application of polyurea has also developed from civilian use to the field of national defense and military industry. With the development of military-civilian integration applications, spray polyurea will surely play a greater role in the construction of industrial, civil and national defense projects around the world.
