Description
Product Description
The chemical storage tank is an very important equipment in a chemical factory, once the tanks get leaked or damaged, it will not also cause property lose but also hurt the workers. STWD9594 is a high performance one component moisture cure polyurethane coating material, the coating adopts large amount of urea bond, two urea bond, urethane bond and hydrogen bond during the pre polymerization process, it is cured after absorption with air moisture, the dense cross-linked interpenetrating network make the coating film has robust chemical resistance and physical property. It has excellent infiltration and permeability characteristics, and it will react with the hydroxyl bond of the substrate so that the adhesive strength is greatly improved with chemical and physical adhesion. In the storage tanks internal wall application, STWD9594 coating can be applied matching with special primer, it can also be used as a bottom integration material.
Features and advantages
* excellent adhesive strength, bond solid with carbon steel and concrete
* high solid content and meet the requirements of environmentally friendly
*excellent mechanical property, wearable, impact resistance and scratch resistance; flexible coating to resist the cyclic stress
*excellent waterproof property
*excellent anticorrosion property and resistance to many chemical rust medium such as salt spray, acid rain etc.
*can be applied by hand brush or machine spraying
*single component, easy to apply, and easier to guarantee the coating quality.
Typical use Anticorrosion protection for the storage tanks internal wall of various chemical, petroleum, pharmaceutical, power generation industry
Product information
| Item | Results |
| Appearance | Color adjustable |
| Viscosity (cps )@20ºC | 380 |
| Solid content (%) | ≥75 |
| surface dry time (h) | 1-3 |
| Pot life (h) | 1h |
| theoretical coverage | 0.14kg/m2(thickness 100um) |
Physical property | Item | Test standard | Results |
| pencil hardness | GB/T 6739-2006 | 2H |
| bending test (cylindrical mandrel) mm | GB/T 6742-1986 | 1 |
| breakdown resistance strength (kv/mm) | HG/T 3330-1980 | 250 |
| impact resistance (kg·cm) | GB/T 1732 | 60 |
| resistance to temperature changes (-40--150ºC) 24h | GB/9278-1988 | Normal |
| adhesive strength (Mpa), metal base | ASTM D-3359 | 5A (highest) |
| density g/cm3 | GB/T 6750-2007 | 1.1 |
Chemical resistance | Acid resistance 50% H2SO4 or15%HCl,30d | No rust, no bubbles, no peel off |
| Alkali resistance 50%NaOH, 30d | No rust, no bubbles, no peel off |
| Salt resistance, 80g/L,30d | No rust, no bubbles, no peel off |
| Salt spray resistance, 2000h | No rust, no bubbles, no peel off |
| Oil resistance 0# diesel, oil, 30d | No bubbles, no peel off |
| ( For reference: pay attention to the influence of ventilation, splash and spillage. Independent immersion testing is recommended if requires detailed 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.
Complaint
