Product Description
STWD9524 is a one component aromatic polyurea anticorrosion waterproof protective coating, it has excellent adhesive strength with concrete and steel structure. The unique chemical structure makes it has excellent waterproof, anticorrosion effect which can greatly protect the urban overpass bridges from water and chemical medium. It has high strength and high flexibility to avoid concrete structure breakdown from bridge vibration and displacement.
Product features and advantages
*High solids, low VOC emissions
*Easy to apply, brush, roller, air spray or airless spray all suitable.
*High physical properties of wearable, impact resistance and scratch resistance
*Excellent waterproof performance
*Excellent chemical resistance, can withstand certain concentration of acid, alkali, salt, oil, organic solvents etc.
*Excellent adhesion force, fast bonding well on the surface of steel, concrete, wood, fiberglass and other substrates.
*Wide temperature requirements, can be used in environments of -50 ºC ~ 120ºC.
*One component material, easy operation without ratio mixed, reducing labor costs
Typical use
Structural protection of all kinds of urban overpass, viaduct, elevated rail, high speed rail, highway, port and water conservancy dam
Products information
| Item |
results |
| Appearance |
Color adjustable |
| Specific gravity (g/m³) |
1.2 |
| Viscosity (cps)@20ºC |
420 |
| Solid content (%) |
75 (it may differ with colors) |
| Dry time(hour) |
1-3 |
| Pot life (h) |
1h |
| Theoretical Coverage |
0.30kg/m2 (thickness:200um) |
Physical properties of products
| Item |
Test standard |
Result |
| Hardness (Shore A) |
ASTM D-2240 |
86 |
| Elongation (%) |
ASTM D-412 |
380 |
| Tensile strength(Mpa) |
ASTM D-412 |
24 |
| Tear strength (kN/m) |
ASTM D-624 |
63 |
| Wear resistance (750g/500r)/mg |
HG/T 3831-2006 |
8 |
| Adhesive strength (Mpa), metal base |
HG/T 3831-2006 |
10 |
| Adhesive strength (Mpa), concrete base |
HG/T 3831-2006 |
3.3 |
| Impact resistance(kg.m) |
GB/T23446-2009 |
1.0 |
| Density(g/cm³) |
GB/T 6750-2007 |
1.1 |
Chemical resistance
| Acid resistance 30% H2SO4 or 10%HCI, 30d |
No rust, no bubbles, no peel off |
| Alkali resistance 30% 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, oil, 30d |
No rust, no bubbles, no peel off |
| ( For reference: pay attention to the influence of ventilation, splash and spillage. Independent immersion testing is recommended if requiring detail data.) |
Application environment
Relative temperature: -5~-+35ºC
Relative humidity: RH%:35-85%
Dew point: the temperature of metal surface must have 3ºC than dew point.
Application tips
Recommended dft: 200-400um, recommend to apply with STWD8008 primer (or per design requirements)
Surface preparation: sand-blasting to above Sa2.5 degree, with roughness 50-75 um.
Re-coating interval: 2-24h, if the interval time exceed 24h or has dust deposited, sand-blasting first and clean well prior to application.
Coating method: airless spray, air spray, brush, roller
Application note
It can be applied in the low temperature below 10ºC. Put the coating bucket into the air-conditioning room for over 24 hours when apply in the low temperature environment.
STWD recommends to agitate the coating uniform prior to application, pour accurate quantity of material to another vessel and seal well immediately. Don't pour the rest liquid to the original bucket.
The viscosity of product is set up in the factory, thinner shall not be random added by the applicators. Call the manufacturer for the instructions of special thinner if the viscosity changed as the application environment and humidity.
Packaging & Shipping
Audited Supplier 
){kind=link}