Basic Info.
Model NO.
STWD8029
Appearance
Liquid
Main Raw Material
Polyurea
Method
Handabel Brush, Spray or Roller
Level
Finish Coat
Drying Method
Air Drying
Certification
ISO14001, ISO9001
Substrate
Steel , Concrete
Components
Mdi
Formation Mechanism
Conversion Type
Transport Package
Iron Bucket Packaging
Specification
20kg/group or 25kg/group
Trademark
STWD
Origin
Shanghai, China
Production Capacity
80000kg/Day
Product Description
STWD8029 two component rigid polyaspartic topcoat Descriptions STWD8029 is a two-component high performance anticorrosion decoration UV resistance topcoat, it applies with aliphatic polyaspartic resin prepolymer as main film-forming material, it has excellent property of discoloration resistance and weather resistance.
Features and benefits
* the coating film is tough, compact, full light and with bright colors
* no discoloration, no-yellowing, no chalking, anti-aging, with excellent weather resistance and color-preserving decoration effect
* excellent adhesive strength, good compatible with polyurethane, epoxy, chlorinated rubber, alkyd, phenolic and other coating film.
* excellent abrasion resistance, impact resistance
* excellent chemical resistance to acid, alkali, salt and others.
* excellent anticorrosion property
* excellent waterproof property
* excellent durability to reduce lifelong maintenance cost
* extend the service life of the sprayed structure
Application scopes
Anticorrosion protective decoration of various reinforced concrete and metal structure surfaces.
Product information
| Item | A component | B component |
| Appearance | light yellow liquid | Color adjustable |
| Specific gravity(g/m³) | 1.05 | 1.32 |
| Viscosity (cps)@25ºC | 350 | 320 |
| Solid content (%) | 56 | 85 |
| Mix ratio (by weight) | 1 | 5 (clear color) |
| Surface dry time (h) | 30 min | |
| Pot life | 20-30min | |
| Recoating interval (h) | Min 1 h; max 18h (20ºC) | |
| Theoretical coverage (DFT) | 0.10kg/m2 film thickness 60μm | |
Typical physical properties
| Item | Test standard | Results |
| Tensile strength(Mpa) | ASTM D-412 | 17 |
| Elongation rate(%) | ASTM D-412 | 368 |
| Abrasion resistance (750g/500r) mg | HG/T 3831-2006 | 5 |
| Impact resistance kg·cm | GB/T 1732 | 50 |
| Anti-aging, accelerated aging 1000h | GB/T14522-1993 | Loss of light<1, chalking <1 |
Chemical resistance
| Acid resistance 10%H2SO4 or 10%HCI, 240h | no rust, no bubbles, no peel off |
| Alkali resistance 5%NaOH, 240h | no rust, no bubbles, no peel off |
| Salt resistance 30g/L, 240h | no rust, no bubbles, no peel off |
| Salt spray resistance 1500h | no rust, no bubbles, no peel off |
| Oil resistance, 0# , crud oil | no rust, no bubbles, no peel off |
| Waterproof, 48h | No bubbles, no wrinkled, no color-changing, no peel off |
| ( For reference: pay attention to the influence of ventilation, splash and spillage. Independent immersion testing is recommended if requires other specific data.) | |
Processing recommendation
| environment temperature | -5~+35ºC |
| humidity | ≤85% |
| dew point | ≥3ºC |
Application instructions
Hand brush, roller
Air spray, with air pressure 0.3-0.5Mpa
Airless spray, with spray pressure 15-20Mpa
Recommend dft: 30-60μm
Recoating interval: ≥3h
Application tips
Agitate part B uniform prior to application.
Strictly mix the 2 parts in right ratio and agitate uniform.
Seal the package well after use to avoid moisture absorption.
Keep the application site clean and dry, forbidden to contact with water, alcohols, acids, alkali etc
Product cure time
| Substrate temperature | Surface dry time | Foot traffic | Solid dry time |
| +10ºC | 4h | 12h | 7d |
| +20ºC | 2h | 8h | 7d |
| +30ºC | 1h | 4h | 7d |
Shelf life
Storage temperature of environment: 5-35ºC
* shelf life is from the manufacturing date and sealed condition
Part A: 10 months Part B: 10 months
* keep the package drum well sealed.
* store in cool and ventilated place, avoid sunshine exposure.
Package: part A: 25kg/barrel, part B: 25kg/barrel.
Product health and safety information
For information and advice on the safe handling, storage and disposal of chemical products, users shall refer to the most recent Material Safety Data Sheet containing physical, ecological, toxicological and other safety related data.
Integrity declaration
STWD guarantee all technical data stated in this sheet are based on laboratory tests. Actual testing methods may vary due to different circumstances. Therefore please test and verify its applicability. STWD does not take any other responsibilities except the product quality and reserve the right of any modifications on the listed data without prior notice.
