One. Corrosion resistance
Except for hydrogen acid, concentrated nitric acid and some strong oxidants, polyurea coatings show good stability in acid, alkali, salt, sea water, oil and other media.
Do a strengthened comparison experiment in the medium. After 1000 hours, the polyurea and its coated No. 20 steel plate did not change, and the adhesion of the polyurea to the steel plate did not change, but the corresponding test
The decay thickness of the block reaches 4mm. This experiment fully proves the resistance of polyurea coatings to the ocean atmosphere. To
Two. Weather resistance
The polyurea coating can be used under severe conditions for a long time, is resistant to UV, cold and heat shock, wind, frost, rain and snow, and does not powder, crack or fall off when used outdoors for a long time.
The aging test shows that the weathering life is more than 50 years, and the application practice under various climatic conditions in Antarctica, the Sahara Desert and the rain forest of South America has proved this. To
Three. Service temperature
Polyurea coatings can be used for a long time in the temperature range of -50°C to 100°C, and can withstand short-term thermal shocks of 150°C.
Four. Adjustable performance
Through different formulas, component molecular weights, degree of branching and additives, the physical properties of the materials are adjusted to meet the requirements of different uses, with different numbers of branches and branches.
The long prepolymer can make the hardness of the coating from soft rubber to hard elastic nature, arbitrarily adjusted, colleagues can adjust the wear resistance and other mechanical properties, and add short glass fibers, etc.,
Reinforce the material, appropriate additives can further enhance the wear resistance, and add various pigments to make the surface of the colorful product.
Fives. Mechanical properties
Polyurea coatings have good adhesion to various substrates. In the adhesion test to concrete, the concrete body is always damaged instead of the bonding surface. Wear-resistant coating
The wear resistance of the layer is 10 times that of ordinary carbon steel, and the coating has excellent tensile strength, flexibility, wear resistance and flame retardancy.
Six. Construction performance
Different from polyurethane or epoxy resin, polyurea is hydrophobic, insensitive to moisture and humidity, and is not affected by cold stools, nor is it affected by ambient temperature and humidity.
It can be applied in a cold environment at -28°C and cured normally. The adaptability is very strong, and it can even be sprayed directly on water or ice, even at -40℃, it will hardly affect the surface.
Surface dry time, fast curing, can be sprayed continuously on any curved surface, vertical surface and top surface without sagging, 5 seconds to gel, only one minute later
Moving or stepping, the thickness of one-time forming is not limited, which overcomes the disadvantages of multi-layer construction, the original shape has good reproducibility, no joints, and beautiful and practical. When spraying polyurea
Two-component without catalyst. 100% solid content, no volatile or toxic substances, environmentally friendly, using complete sets of equipment, convenient construction and high efficiency.
The above are the 6 major characteristics of polyurea coatings for everyone. More understanding will help everyone pay attention to the construction and avoid instability in the construction.
Factors occur. For polyurea, please find Wei Shiqi. After more than ten years of technical precipitation and more than eight years of production and construction practices, the product quality meets the national standards and has formed
Own a unique set of construction methods.
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