• Item Name: PERMABOND 920
• Manufacturer: Permabond
• Technologies: Allyl cyanoacrylate
• Color: Colourless
• Cure Type: Room temperature, pressure-activated; secondary heat cure for high temperature resistance
• Package Size: Contact to Techniq VN for details.
• Shelf Life: 12 months
PERMABOND® 920 is the original allyl cyanoacrylate adhesive. It is a single-part, low-viscosity liquid that cures rapidly at room temperature when pressed into a thin film. Fixture strength is achieved within 10 seconds on most substrates, with full cure in 24 hours.
Key features include:
Rapid development of high strength
Ease of use (no mixing or heat cure required)
Bonds a wide range of materials (metals, plastics, rubber)
100% reactive, solvent-free
Specially designed for high-temperature resistance up to 250°C when post-cured
Approved to MIL-A-46050C Type V Class 2.
Bonding steel, aluminum, zinc, and other metals
Bonding plastics such as ABS, PVC, PC, and phenolic
Bonding rubbers (e.g., Buna N)
High-temperature environments (e.g., paint baking, wave soldering)
General industrial assembly requiring fast cure and high strength
| Property | Value |
|---|---|
| Chemical composition | Allyl cyanoacrylate |
| Appearance | Colourless liquid |
| Viscosity @ 25°C | 70–90 mPa·s (cP) |
| Density | 1.05 |
| Maximum gap fill | 0.15 mm (0.006 in) |
| Cure speed (Steel) | 15–20 sec |
| Cure speed (Buna N Rubber) | 10–15 sec |
| Cure speed (Phenolic) | 10–15 sec |
| Full strength | 24 hours |
| Property | Value |
|---|---|
| Shear Strength (Steel, ASTM D-1002) | 19–23 N/mm² (2800–3300 psi) |
| Shear Strength (Aluminium) | 8–9 N/mm² (1200–1300 psi) |
| Shear Strength (Zinc) | 10 N/mm² (1450 psi) |
| Shear Strength (ABS) | >6 N/mm² (900 psi) – SF |
| Shear Strength (PVC) | >6 N/mm² (900 psi) – SF |
| Shear Strength (PC) | >5 N/mm² (700 psi) – SF |
| Shear Strength (Phenolic) | 14 N/mm² (2000 psi) |
| Impact Strength (ASTM D-950) | 6–14 kJ/m² (3–7 ft-lb/in²) |
| Hardness | 85 Shore A |
| Coefficient of Thermal Expansion | 90 × 10⁻⁶ mm/mm/°C |
| Thermal Conductivity | 0.1 W/(m·K) |
| Temperature Resistance | -55°C to +250°C (with post cure) |
| Environment | Strength Retention |
|---|---|
| Air (Reference) | 100% |
| 95% RH at 40°C | ~80% |
| Unleaded Gasoline | ~80% |
| Motor Oil @ 40°C | ~100% |
| Water | ~70% |
| Ethanol | ~60% |
| Isopropanol | ~60% |
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