Product Description
STWD9001 desalination caisson special polyurea is a 100% solid content aromatic polyurea elastomer material. It has high anticorrosion and erosion resistance to seawater and with high cathodic disbonding resistance. It has been widely applied in the large-scale desalination engineering projects in America, Australia and domestic China.
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 substrate
*Excellent impact resistance and abrasion resistance
*Excellent anticorrosion and chemical resistance to acids, alkali, salts etc.
*Excellent waterproof performance
*Good shock absorbing performance
*Excellent resistance to temperature variation
*Fast cure, application site back to service quickly
*Excellent durability to reduce lifelong maintenance cost
*Extend the service life of sprayed structure
Product Applications
Anticorrosion waterproof protection of seawater desalination tanks, offshore wharf and other marine equipment.
Product information
| Item |
A |
B |
| Appearance |
Pale yellow liquid |
Adjustable color |
| Specific gravity (g/m³) |
1.08 |
1.02 |
| Viscosity(cps)@25ºC |
820 |
670 |
| Solid content (%) |
100 |
100 |
| Mix ratio (Volume ratio) |
1 |
1 |
| Gel time(second)@25ºC |
4-6 |
| Surface dry time(second) |
15-40 |
| Theoretical Coverage (dft) |
1.05kg/m2 Film thickness 1mm |
Physical properties
| Item |
Test standard |
Results |
| Hardness (Shore A) |
ASTM D-2240 |
90 |
| Elongation rate(%) |
ASTM D-412 |
460 |
| Tensile strength(Mpa) |
ASTM D-412 |
18 |
| Tear strength (kN/m) |
ASTM D-624 |
65 |
| Impermeability (0.3Mpa/30min) |
HG/T 3831-2006 |
Impermeable |
| Wear resistance (750g/500r)/mg |
HG/T 3831-2006 |
4.4 |
| Adhesive strength(Mpa)concrete base |
HG/T 3831-2006 |
3.2 |
| Adhesive strength(Mpa) steel base |
HG/T 3831-2006 |
11.5 |
| Density(g/cm³) |
GB/T 6750-2007 |
1.02 |
| Cathodic disbondment [1.5v,(65±5)ºC,48h] |
HG/T 3831-2006 |
≤15mm |
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# d iesel, 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 environment
| Environment temperature |
0ºC-45ºC |
| Product pre-heat temperature |
65ºC-70°C |
| Pipe pre-heat temperature |
55ºC-65ºC |
| Relative humidity |
≤90% |
| Dew point |
≥3ºC |
Application guide
| Recommend spray machine |
GRA CO H-XP3 Polyurea spray equipment |
| Spray gun |
Fusion-air purge or mechanical purge |
| Static pressure |
2300-2500psi |
| Dynamic pressure |
2000-2200psi |
| Recommend film thickness |
1000-3000μm |
| Recoating interval |
≤6h |
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