SNK-2218（Aliphatic Polyurethane Acrylate）
UV Metal Adhesion Resin(Aliphatic polyurethane acrylate) SNK-2218
Product Description:
Main applications: This product is suitable for use on glass, metal, polyester paint surfaces, ceramic glazes, etching ink, cover plate ink, boil-resistant and water-resistant inks, acid and alkali resistant inks. It can be used for bonding between glass or between glass and aluminum alloy, as a base for glass vacuum plating, aluminum alloy car wheels, tinplate, stainless steel, etc.
Processes: Screen printing, roller coating, spraying, adhesives, etc. It is soluble in conventional UV monomers, resins, and similar substances.
Typical performance characteristics:
- Excellent adhesion (3M tape test shows no peeling), good yellowing resistance, excellent water resistance on stainless steel and glass substrates, resistant to cutting fluid, boil-resistant, can withstand 5% NaOH solution for ≥0.5 hours, acid-resistant, hardness ≥1H. (Greater curing energy results in better water resistance, recommended usage temperature below 40 degrees Celsius, seal immediately after use for better resistance to water bubbles).
- After UV curing, can be further cured by infrared heating to promote adhesion, or baked at 180 degrees Celsius for 30 minutes for better results.
- Number of functional groups: 2, curing energy: 1500-3000 mJ/cm², soluble in ketones, esters, and aromatic solvents.
- Molecular weight (Mw): 2500-3000.
Test formula: (using a 25µm wire rod)
- 2218: 10g
- 184: 0.2g
- 819: 0.1g
- TPO: 0.2g10.5g
Technical Parameters:
| serial number | Technical parameter items | unit | Technical parameters |
| 1 | viscosity | mpa.s/40℃ | 1000-2500 |
| 2 | Solid content | % | ≥98 |
| 3 | Exterior | Slightly yellow viscous | |
| 4 | color number | Gardner,25℃ | ＜3 |
| 5 | AV | mgKOH/g | ≤10 |
| 6 | NCO | mgKOH/g | ≤1 |
| 7 | Polymerization inhibitor | ppm |
＜ 400 |
Storage and validity period:
1: This product should be stored in a cool, well-ventilated room, and strictly protected from light exposure for stable storage.
2: Keep the resin away from heat sources and store it in a dark place to prevent potential hazards or affecting the stability of resin storage.
3: When stored at room temperature, it remains stable for six months. After use, please tightly seal the container to avoid exposure to light sources and gelation.
Package
200 kilograms/iron drum
20 kilograms/iron drum
200 kilograms/plastic drum
20 kilograms/plastic drum
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