SWD8028 polyaspartic anticorrosion coating

short description:

SWD8028 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.

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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

Product information

Item	A component	B component
Appearance	light yellow liquid	Color adjustable
Specific gravity(g/m³)	1.04	1.50
Viscosity (cps)@25℃	40-60	100-200
Solid content (%)	58	90
Mix ratio (by weight)	1	1
Surface dry time (h)	1
Pot life (h)@25℃	1
Theoretical coverage (DFT)	0.15kg/㎡ film thickness 100μm

Typical physical properties

Item	Test standard	Results
Pencil hardness		H
Adhesive strength（Mpa）metal base	HG/T 3831-2006	9.3
Adhesive strength（Mpa）concrete base	HG/T 3831-2006	2.8
Impermeability		2.1Mpa
Bending test (cylindrical shaft)		≤1mm
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 40%H₂SO₄or 10%HCI, 240h	no rust, no bubbles, no peel off
Alkali resistance 40%NaOH, 240h	no rust, no bubbles, no peel off
Salt resistance 60g/L, 240h	no rust, no bubbles, no peel off
Salt spray resistance 1000h	no rust, no bubbles, no peel off
Oil resistance, engine oil 240h	no rust, no bubbles, no peel off
Water resistance, 48h	No 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.)