STWD9515 is a 100% solid content aromatic polyurethane elastomer. It has excellent puncture resistance,penetration resistance, anti-corrosion and waterproof performance, which can effectively prevent the puncture of plant roots, to avoid water leakage caused by plant puncture. STWD polyurea has been widely used in the planted roof projects in China and abroad.
Product features and advantages
*Solvent free, 100% solid content, safe, environmentally friendly and odor free.
*Rapid cure, can be sprayed forming on any bent, slope and vertical surfaces, no sagging.
*Dense coating, seamless, with good flexibility.
*Strong adhesive strength, fast bonding well on steel, concrete, wood, glass fibers and other substrates.
*Excellent impact resistance, abrasion resistance
*Excellent corrosion resistance and chemical resistance to acids, alkali, salts etc.
*Excellent puncture resistance against plant root, penetration resistance and waterproof
*Good shock absorbing performance
*Excellent resistance to temperature variation
*Fast cure, application site back to service quickly
*Excellent durability to reduce maintenance cost of service life
*Extend the service life of sprayed structure
Product Applications
Root resistance waterproof protection of roof garden, urban square and other planted roof
Products information
| Item | A | B |
| Appearance | Pale yellow liquid | Adjustable color |
| Specific gravity (g/m³) | 1.13 | 1.04 |
| Viscosity(cps)@25ºC | 810 | 670 |
| Solid content (%) | 100 | 100 |
| Mixing ratio(volume ratio) | 0 | 0 |
| Gel time(second)@25ºC | 1 | 1 |
| Dry time(second) | 3-5 | |
| Theoretical Coverage (dft) | 1.02kg/m2 film thickness:1mm | |
Physical properties of products
| Items | Test standard | Result |
| Hardness (Shore A) | ASTM D-2240 | 89 |
| Elongation rate(%) | ASTM D-412 | 450 |
| Tensile strength(Mpa) | ASTM D-412 | 17 |
| Tear strength (N/km) | ASTM D-624 | 65 |
| Impermeability(0.3Mpa/30min) | HG/T 3831-2006 | impermeable |
| Wear resistance (750g/500r)/mg | HG/T 3831-2006 | 4.2 |
| Adhesive strength(Mpa)concrete base | HG/T 3831-2006 | 3.4 |
| Adhesive strength(Mpa) steel base | HG/T 3831-2006 | 11 |
| 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 spray heating temperature | 65ºC- 70ºC |
| Pipe heating temperature | 55ºC-65ºC |
| Relative humidity | ≤80% |
| Dew point | ≥3ºC |
