Product Description
STWD9526 polyurea is a single component aromatic thick film polyurea anticorrosion waterproof coating material. It cures to form a thick-film membrane that provides excellent adhesive strength with concrete and steel structure, easy to apply without need of special polyurea spray machine. Because of the unique chemical structure, it is an ideal material for waterproof anticorrosion protection with high chemical resistance and waterproofing. The high elasticity and high strength makes it most suitable for building walls waterproof, seal water of structure crack and expansion joint, anti-seepage and leak stopping of harbor docks and dams.
Features and benefits
* high solid content, low VOC
* easy application method, use scraper to scratch the coat. Special polyurea spray machine is not needed, one hand thick film
* excellent wearable, impact resistance, resistance to scratch
* excellent waterproofing
* excellent resistance to chemical media, can withstand certain concentration of acid, alkali, oil, salt and organic solvent
* excellent adhesive strength, fast bond to the surface of steel, concrete, wood, fiberglass and other substrate.
* wide application temperature, can be applied on -50ºC~120ºC
*single component material, easy to apply that reduce the labor cost.
Application scope Waterproof of construction, water conservancy, transportation, chemical and power plants, such as the crack repair of highway, pavement, airport runway, leak repair of water conservancy, offshore dam and port dock repair etc.
Product information
| Item |
Results |
| Appearance |
Color is adjustable |
| Specific gravity (g/cm3)) |
1.1 |
| Viscosity (cps )@20ºC |
10000-30000 |
| Solid content (%) |
≥80 |
| surface dry time (hrs) |
1-3 |
| Pot life (hrs) |
0.5h |
| theoretical coverage |
0.72kg/m2(thickness 500um) |
Physical properties
| Item |
Test standard |
results |
| Hardness (Shore A) |
GB/T23446-2009 |
88 |
| Elongation (%) |
GB/T23446-2009 |
320 |
| tensile strength (Mpa) |
GB/T23446-2009 |
20 |
| Tear strength (kN/m) |
GB/T23446-2009 |
60 |
| abrasion resistance(750g/500r),mg |
HG/T 3831-2006 |
8 |
| Adhesive strength (Mpa) steel 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 |
1.25 |
Chemical properties
| Acid resistance 30%H2SO4 or10%HCl,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 |
no bubbles, no peel off |
| 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 instructions
Environment temperature: -5 ~35ºC
Relative humidity: 35-85%
Dew point: when apply on metal surface, the temperature must be 3ºC higher than dew point.
Application guidance
Recommended dft: 500-1000um (or based on the design requirements)
Recoat interval: 2-4h, if exceed 24h or have dusts on the surface, use sandpaper to blasting then apply it.
Recommended application method: use scraper to scratch.
Notice
It can be used in the temperature below 10ºC. When apply in extreme low temperature, keep the coating barrel in the air conditioning room for 24 hrs.
STWD advises to mix the coating barrel uniform, seal the package well after use to avoid moisture absorption. Not to put the poured out material into the original barrel again.
Viscosity is fixed before shipped, thinner shall not be random added. Instruct the manufacturer in special situation to add thinner.
Curing time
| Substrate temperature |
Surface dry time |
Foot traffic |
Solid cure |
| +10ºC |
4h |
24h |
7d |
| +20ºC |
1.5h |
8h |
6d |
| +30ºC |
1h |
6h |
5d |
Shelf life
Polyurea Storage temperature of environment: 5-35ºC
* shelf life: 6 months (sealed)
* store in cool and ventilated place, avoid sunshine direct exposure, keep away from heat.
* Package: 4kg/barrel, 20kg/barrel.
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