Polyurethane Glue for Aluminum Composite Panel and Sandwich Stucture Bonding (Flexibond 8211)
1. Description:
Flexibond 8211/Flexibond 8200 is a two-component polyurethane adhesive which is applied for structural bonding for various substrates, such as aluminum honeycomb, wood, PU foam, polystyrene foam board, glass fiber-reinforced plastic, aluminum plate and steel plate, etc.
2. Characteristics:
(1) Excellent adhesion to various substrates.
(2) Cures fast, shortens heat or cold setting time.
(3) Solvent free, environmental friendly.
(4) Good humidity and heat resistance.
3. Application
(1) Adhesive Coating:
The recommended dosage is 200-400G/M2. The dosage varies with the roughness of the substrate surface.
(2) Mixing Ratio
Flexibond 8211/Flexibond 8200=4: 1 (by weight)
The resin (8211) should be uniformly stirred before it is mixed with the hardener (8200). Mix the two components uniformly. Mix for 1-2 more minutes after the two components color is well mixed.
(3) Adhesive Coating Temperature:
The adhesion should be taken within its open time. The open time and curing speed will be affected if the temperature is too high or too low.
(4) Pressing:
Raise the pressing pressure as high as possible without affecting the material forming.
(5) Pressing time
The pressing time is 6-8 hours. The adhesive is fully cured in 7 days. The higher the temperature is, the faster the curing is. The pressing time can reach 30 mins under the temperature of 80.
(6) Clean
Recommended Cleaner: Acetone, butanone.
4.Packaging
Resin: 24kg/barrel
Hardener: 6kg/barrel
The packaging can be adjusted according to customer's requirement.
5. Basic Techinical Data
| | Flexibond 8211 (Resin) | Flexibond 8200 (Hardener) |
| Curing mechanism | Poly addition |
| Chemical base | Multiplehydroxyl compound | PAPI |
| Color | White | Brown |
| The coloraftermixing | Light yellow |
| Density (beforecuring) | 1.50±0.05g/cm3 | 1.2±0.05g/cm3 |
| Viscosity | 15000-20000mpa.s | 250mpa.s |
| Viscosity (aftermixing) | 8000-12000mpa.s |
| Mixingratio (by weight) | 4 | 1 |
| Pot life (23c) | 30-50mins |
| Open time (23c, 50%RH) | 50-70mins |
HardnessshoreD
(GB/T 531-2008) | Approx 75 |
Shear strength
(GB/T 7124-2008) | ≥12Mpa (Aluminum alloy) |
Flat tensile strength
(GB/T 1452-2005) | ≥1.5Mpa |
Climbing drum peel strength
(GB/T 1457-2005) | ≥80N@mm/mm |
| Shelflife (unopened below 25c) | 12months | 6months |
6. Office and Workshop Review
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7. Test Equipment to make the quality of each adhesive we send.
8. Draft of Certification
