Spray Polyurea Waterproof Coating for Water Conservancy

Product Introduction

Performance Characteristics

1. The coating is constructed by mechanization, which can effectively avoid potential engineering quality problems caused by manual operation.
2. The coating film gels in 8 seconds and can bear load within 30 minutes after completion, greatly reducing the impact of cross - construction on the project.
3. It does not sag during vertical and curved surface construction, and is suitable for the construction of all special - shaped components.
4. The coating forms an integral seamless film, completely avoiding the hidden danger of leakage points.
5. The dense coating can effectively prevent the penetration of corrosive media, achieving overall protection and effectively extending the service life of construction projects.
6. It has no VOC volatilization, contains no heavy metals, conforms to the development trend of international waterproof materials, and is a green and environmentally friendly product.
7. After spraying and film - forming, all its test indicators meet or exceed the requirements of GB/T 23446 - 2009 "Sprayed Polyurea Waterproof Coating".

Product Applications

1. Waterproof renovation projects of old roofs.
2. Integrated waterproof and thermal insulation projects for building roofs such as factories and hotels.
3. Surface waterproof and anti - corrosion projects for metal components, steel structures, color steel plates, etc.
4. Waterproof and anti - corrosion projects for large - span roofs of museums, libraries, factories, etc.
5. Waterproof and anti - seepage projects for stadium stands, urban trenches, underground space buildings, etc.
6. Waterproof and anti - seepage projects for artificial lakes, artificial rivers, landfills, sewage treatment tanks, landscape pools, etc.

Physical and Chemical Properties

Surface Treatment Before Construction

1. Steel: Sandblasting for rust removal should reach at least Sa2.5 grade, and manual rust removal should reach St3.0 grade standard. The painted surface should be free of oil stains, clean, dry, and free of soluble salts. Prime paint should be applied within 4 hours after surface rust removal.
2. Old Painted Ground: Completely grind and remove the loose or incompatible old paint layer until the solid concrete surface is exposed. It is recommended to sandblast and roughen the base surface with a sandblaster or shot blasting machine, and then remove dust and clean it.
3. Oily Ground: Oil stains seriously affect the adhesion of the paint to the base surface. The oily ground should be completely cleaned and ground.
4. New Concrete Sub - floor: After the concrete curing period is completed and the concrete is dry (moisture content ≤6%), the base surface treatment before painting can be carried out. If the surface flatness does not meet the standard, it needs to be smoothed with a grinder.
5. Sealing Primer: Spray or roll 1 - 2 coats of special supporting sealing primer. The interval between primer coatings should be no less than 4 hours.
6. Middle - layer Repair Putty: Repair the holes and pinholes of the base material to avoid pinholes and bulging during later polyurea spraying.
7. Surface Spraying: It is recommended to use a special polyurea spraying device for construction. The thickness of a single - spray film is 1 - 2 mm, and the material consumption is 1.2−2.5 kg/m2. For multiple spraying, the minimum interval between coatings is not limited, and the maximum interval should not exceed 4 hours.

Construction Conditions

1. Temperature Range: The coating environment temperature range is 5 - 35 °C. The base surface temperature should be at least 3 °C higher than the air dew - point temperature.
2. Humidity Range: The coating environment humidity range is 30 - 80%.
3. Ventilation Conditions: Ensure that the construction site is well - ventilated and dust - free, but there should be no strong wind to avoid bringing in dust and affecting the appearance.
4. Note: This product is not suitable for locations directly exposed to sunlight and areas with high ultraviolet intensity.

Construction Method

Construction Parameters

Packaging Specifications

Storage, Transportation Conditions and Shelf Life

1. Storage and Transportation Conditions: The paint should be sealed and stored in a dry, cool, and well - ventilated environment at 5 - 35 °C, avoiding high temperatures and fire sources. During transportation, ensure that the carriage environment is dry and closed, and the materials are stacked stably.
2. Shelf Life: For components A and B, in original sealed packaging and stored under the storage and transportation conditions, the shelf life is 12 months from the production date.

Safety Precautions

1. Read the construction instructions and warning labels on the packaging container carefully before use.
2. Use it under well - ventilated conditions. Prohibit open flames at the construction site, such as welding, grinding, smoking, and other unmentioned situations.
3. Wear gas masks and other protective equipment during construction. Do not inhale paint mist, and avoid skin contact with the paint. If the paint splashes on the skin, wash it off immediately with soap and plenty of water. If it splashes into the eyes, rinse thoroughly with water and seek medical treatment immediately.
4. Under normal construction conditions, the dried coating is non - toxic. Please use it with confidence. For detailed information on toxicity, safety, and first - aid, please refer to the "Material Safety Data Sheet" (MSDS) of this product.

Fire and Explosion Hazards

1. Fire - fighting Medium: Carbon dioxide, foam, or chemical dry powder fire extinguishers can be used for fire - fighting. When there is no other fire - fighting agent available, a large amount of atomized water can be sprayed. Once the fire is extinguished, the spilled materials should be cleaned up (see Leakage and Spillage Handling).
2. Fire - fighting Procedure: Normal protection.

Leakage and Spillage Handling

1. Small amounts of leaked and spilled materials can be washed away with water. In case of a large leak, collect and recycle the materials, and wash the contaminated ground with water or detergent. The disposal of waste combined materials must comply with local government environmental protection regulations.
2. For more information, please refer to the safety technical specification of our company's products or contact our company's customer service center.