Polyaspartic Acid Ester Anti-Corrosion and Wear-Resistant Coating for Steel Structures

Min.Order: 200
Product origin: Shanghai, China
Infringement complaint: complaintComplaint
US$ 10

Description
  STWD8028 polyaspartic anticorrosion coating

Descriptions          STWD8028 is a reaction polymerization of polyaspartic ester and polyisocyanate, since polyaspartic is an aliphatic sterically hindered secondary amine, and the curing component selected is an aliphatic polyisocyanate, the coating has high gloss and color retention property that is suitable for long-term outdoor use. When the secondary amine group reacts with the isocyanate group, a high-crosslinking density, cross-interpenetrating polymer chain network structure is formed, which also makes the product have good physical and chemical properties.

Features and benefits
* high solids low density, with good leveling, the coating film is tough, dense, full light and bright colors
* excellent adhesive strength, good compatible with polyurethane, epoxy and other coating film.
* high hardness, good scratch resistance and stain resistance
* excellent abrasion resistance, impact resistance
* excellent anticorrosion property, resist to acid, alkali, salt and others.
* no discoloration, UV resistance, no yellowing, no powdering, aging resistance, with excellent weather resistance and gloss and color retention property
* can be applied directly to the surface of metal surface (DTM)
* this product is environmentally friendly and contains no benzene solvents and lead compounds

Application scopes
Anti-corrosion and protection of steel structures, storage tanks, containers, valves, natural pipelines, frames, axles, shelves, tank trucks, swimming pools, sewage pools, chemical cofferdams, etc.

Product information
ItemA componentB component
Appearance light yellow liquidColor adjustable
Specific gravity(g/m³) 1.041.50
Viscosity (cps)@25ºC40-60100-200
Solid content (%) 7590
Mix ratio (by weight) 11
Surface dry time (h)1
Pot life (h)@25ºC1
Theoretical coverage (DFT)0.15kg/m2 film thickness 100μm


Typical physical properties
ItemTest standardResults
Pencil hardness H
Adhesive strength(Mpa)metal baseHG/T 3831-20069.3
Adhesive strength(Mpa)concrete baseHG/T 3831-20062.8
Impermeability 2.1Mpa
Bending test (cylindrical shaft) ≤1mm
Abrasion resistance (750g/500r) mgHG/T 3831-20065
Impact resistance  kg·cm               GB/T 173250
Anti-aging, accelerated aging 1000hGB/T14522-1993Loss of light<1, chalking <1

Chemical resistance
Acid resistance 40%H2SO4 or 10%HCI, 240h  no rust, no bubbles, no peel off
Alkali resistance 40%NaOH, 240hno rust, no bubbles, no peel off
Salt resistance 60g/L, 240hno rust, no bubbles, no peel off
Salt spray resistance 1000hno rust, no bubbles, no peel off
Oil resistance, engine oil 240h  no rust, no bubbles, no peel off
Water resistance, 48hNo bubbles, no wrinkled,
no color-changing, no peel off
(Note: The above chemical resistant property is obtained according to the GB/T9274-1988 test method, for reference only. 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: 150-300μm
Recoating interval: min 1h, max 24h

Application tips
Agitate part B uniform prior to application.
Strictly mix the 2 parts in right ratio and agitate uniform, use up the mixed material within 1h.
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 temperatureSurface dry timeFoot trafficSolid dry time
+10ºC2h24h7d
+20ºC1.5h8h7d
+30ºC1h6h7d
Note: the curing time is different with environment condition especially when temperature and relative humidity changes.

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.



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