Solvent-free, high durability, room temperature curable
Polyurea for hand-painting
“Sterralock™”
Hand-paintable polyurea with long pot life, high strength, high durability, and easy handling.
Polyurea is also known as “stainless-steel like resin” or “100-year coating”. As Polyurea is known to have short pot life after mixing its monomer components due to quite rapid reaction. Thus its applications have been conventionally limited to a spray coating system. This new Polyurea has longer pot life than conventional polyurea to remain unhardened for hand-painting applications while retaining the advantages of common polyurea (high strength, high durability, and solvent-free).
Features
- ・No special equipment for painting, no anti-scattering equipment, and no operator training is required.
- ・It is applicable to complex shapes with thinner coating which has not been accomplished by spray coating system.
- ・You can get both all good characterics such as higher strength, longer durability with easier handling.
2-component type
Room temperature curable
Solvent-free

Properties and comparison with other products
Items | Unit /Condition |
Properties of our products*1 | Competitor's products*4 | ||||
---|---|---|---|---|---|---|---|
Strong type TD-123 |
Normal type BD-085 |
Clear type CD-032 |
High type |
Spray type |
Hand Paintable |
||
Viscosity | mPa•s (25°C) | Approx. 12,000 |
Approx. 8,000 |
Approx. 3,000 |
Approx. 6,000 |
- | - |
Pot life*2 | 25°C | Approx. 15min |
Approx. 25min |
Approx. 20min |
Approx. 2min |
- | 10-30min |
Tack-free time | 25°C | Approx. 6h |
Approx. 8h |
Approx. 16h |
Approx. 30min |
5-10sec | 4-6h |
Color | - | Yellow | Yellow | Colorless | Yellow | - | - |
Tensile strength | MPa | 58 | 45 | 33 | 40 | 13~34 | 約10 |
Tensile elongation | % | 6 | 8 | 4 | 400 | 35~400 | 900 |
Surface hardness | Durometer hardness | D75 | D65 | D50 | D50 | A75~85 D50~70 |
A60 D20 |
Chemical resistance*3 |
10% H2SO4 | Good | Good | Good | Good | Good | Swollen |
5% CH3COOH | Good | Good | Good | Good | Good | Swollen | |
Ca(OH)2 (saturated) |
Good | Good | Good | Good | Good | Swollen | |
adhesion strength to concrete |
N/mm² | >1.5 | >1.5 | >1.5 | - | - | - |
abrasion resistance (abrasion loss) |
Taber abrasion 1000rpm CS-17,1kg |
8-21 mg |
82mg | 35-170mg | <1mg | 35-170mg | 25mg |
- *1: Not a guaranteed value
- *2: Time required for viscosity to double. It flows even after the Pot life.
- *3: After immersion at 60℃ for 6 days, visually observe the change in appearance.
- *4: The values are catalog value.
Adhesion to various substrates
Example of BD-085 | Adhesion strength to various s Example of BD-085 ubstrates (N/mm²) | ||||||
---|---|---|---|---|---|---|---|
Primer | Concrete | SPCC | SUS304 | Al | PC | FRP (Epoxy) |
EPS |
None | 3.3 | 2.4 | 1.0 | 1.8 | 1.6 | 2.7 | Good |
A(Urethane) | >4 | >4 | >4 | >4 | - | - | - |
B(Acrylic urethane) | >4 | >4 | 1.8 | >4 | 2.7 | 3.0 | - |
C(Epoxy) | >4 | >4 | - | >4 | - | - | - |
>4: Above the upper limit of the test equipment.
-: No data
- Test condition:
- After applying the primer and drying for 1 to 3hours, 1mm of polyurea was applied and cured at 40°C for 24hours, after which the adhesion strength was measured using a simple adhesion tester QR-40A.

It adheres well to concrete, metal, FRP, etc. Adhesion can be improved with a primer. We can also recommend suitable primers.
Application examples




Catalog
PDF Download (1.2MB)< June 01, 2023 >