STWD9009 Aliphatic spray polyurea anticorrosion waterproof protective coating
Product description
STWD9009 is a 100% solid content aliphatic polyurea elastomer that formed by the reaction of aliphatic isocyanate component with amino compound component, which requires professional polyurea equipment for application. This coating not only has excellent waterproof, anti-corrosion, and wear-resistant properties, but also has excellent aging resistance. It is suitable for outdoor use without powdering or discoloration. This product is widely used in industrial and commercial anti-corrosion and waterproofing fields.
Product features and advantages
*Solvent free, 100% solids, safe, environmentally friendly and odor free.
*Rapid cure, can be sprayed forming on any bent, slope and vertical surfaces without sagging.
*Dense coating, seamless, with good flexibility.
*High adhesive strength, fast bonding well on steel, concrete, wood, glass fibers and other substrates.
*Excellent impact resistance, abrasion resistance
*Excellent anticorrosion and chemical resistance to acids, alkali, salts etc.
*Excellent waterproof performance
*Good weather resistance, non powdering or discoloration for long-term outdoor use
*Fast cure, reduce the downtime
*Excellent durability to reduce maintenance cost for lifelong
*Extend the service life of sprayed structure
Product application scope
Anticorrosion and waterproofing in many fields such as architecture, chemical engineering, transportation, metallurgy, power, aerospace, marine and shipbuilding, and other filed that requires weather resistance protection.
Products information
| Item | Part A | Part B |
| Appearance | Clear liquid | Adjustable color |
| Specific gravity (g/cm³) | 1.05 | 1.02 |
| Viscosity（cps）@25℃ | 780 | 650 |
| Solid content （%） | 100 | 100 |
| Mix ratio（by volume） | 1 | 1 |
| Gel time (second）@25℃ | 40-100 | |
| Theoretical coverage (dft) | 1.08kg/㎡ film thickness:1mm | |
Physical properties
| Item | Test standard | Result |
| Hardness (Shore D) | ASTM D-2240 | 60 |
| Elongation rate（%） | ASTM D-412 | 60 |
| Tensile strength（Mpa） | ASTM D-412 | 15 |
| Tear strength (kN/m) | ASTM D-624 | 55 |
| Impermeability (0.4Mpa/2h) | GB/T23446-2009 | impermeable |
| Wear resistance（750g/500r）/mg | HG/T 3831-2006 | 6.0 |
| Adhesive strength（Mpa）concrete base | HG/T 3831-2006 | 3.2 |
| Adhesive strength（Mpa) steel base | HG/T 3831-2006 | 10.5 |
| cathodic disbonding resistance [1.5v,(65±5)℃，48h] | HG/T 3831-2006 | ≤15mm |
| Cathodic disbondment [1.5v,(65±5)℃, 48h] | GB/T1865-2009 | No blistering, no cracking, no rust or peel off; Powder level 0, color-change level 2, loss of light level 2 |
Chemical resistance
| Acid resistance 10%H2SO4 or 10%HCI,30d | No rust, no bubbles, no peel off |
| Alkali resistance 10% NaOH, 30d | No rust, no bubbles, no peel off |
| Salt resistance 30g/L,30d | No rust, no bubbles, no peel off |
| Salt spray resistance, 2000h | No rust, no bubbles, no peel off |
| Oil resistance 0# diesel, crude, 30d | No rust, no bubbles, no peel off |
| (For reference: the above data is acquired based on GB/T9274-1988 test standard. Pay attention to the influence of ventilation, splash and spillage. Independent immersion testing is recommended if requires other specific data) | |
Application guide
| Recommend spray machine | Special polyurea spraying equipment |
| Spray gun | Fusion-air purge or mechanical purge |
| Static pressure | 2300-2500psi |
| Dynamic pressure | 2000-2200psi |
| Heating temperature for product spraying | 65℃-70°C |
| Pipeline heating temperature | 55℃-65℃ |
| Recommend film thickness | 1000-3000μm |
| Recoating interval | ≤6h |
Application environment
| Environment temperature | 0℃-45℃ |
| Relative humidity | ≤90% |
| Dew point | ≥3℃ |
Surface preparation
Metal surface: It is recommended to sandblast and remove rust to achieve Sa2.5 level according to ISO8501-1 or GB8923 standards.
Concrete surface: achieve a strong, dense, flat, clean, and dry state. There should be no phenomena such as sanding, shelling, cracks, honeycomb and pockmarks. Usually concrete should be prepared by putty.
Wood surface: clean, dry, without burrs, fragments, and loose debris.
The surface preparation of other substrates please consult with STWD technical engineers.
Application note
Agitate part B uniform prior to application, thoroughly mix the deposited pigments, or the product’s quality will be affected.
Spray polyurea within the proper time if the surface is primed. For the application method and interval time of STWD polyurea speical primer please refer to STWD company’s other brochure.
Always apply STWD9009 on a small area before large application to check the mix ratio, color and spray effect are correct. For detailed information of application please refer to the latest instruction sheet of the application instructions of STWD spray polyurea series.
Product curing time
| Substrate temperature | Dry | Foot traffic | Solid dry |
| +10℃ | 30-40min | 60min | 7d |
| +20℃ | 20-30min | 50min | 6d |
| +30℃ | 10-20min | 40min | 5d |
Note: the curing time varies with the environment condition especially the temperature and relative humidity.
Package and shelf Life
Packing: Part A 210kg/drum, part B 200kg/drum
Shelf life: 10 months (From the manufacturing date and on original package sealed condition)
*storage temperature：+5-35°C
*make sure the product package sealed well
* store in cool and ventilated place, avoid direct sunshine exposure.
Product health and safety information
For information and advice on the safe handling, storage and disposal of chemical products, users shall refer to the most recent Material Safety Data Sheet containing physical, ecological, toxicological and other safety related data.
Integrity declaration
STWD guarantees all technical data stated in this sheet are based on laboratory tests. Actual testing methods may vary due to different circumstances. Therefore please test and verify its applicability. STWD does not take any other responsibilities except the product quality and reserve the right of any modifications on the listed data without prior notice.
