PERMABOND® 791 is a low viscosity, surface insensitive adhesive that will rapidly bond substrates with acidic surfaces such as wood and plated surfaces. Plastics, metals, ceramics and elastomers are also rapidly bonded. The fast cure minimizes the occurrence of frosting and fogging.
Cyanoacrylate adhesives are single component adhesives that polymerize rapidly when pressed into a thin film between parts. The moisture adsorbed on the surface initiates the curing of the adhesive. Strong bonds are developed extremely fast and on a great variety of materials. These properties make PERMABOND cyanoacrylates the ideal adhesives for high speed production lines.
FEATURES AND BENEFITS
- Extremely fast setting
- Rapid development of high strength
- Ease of use – no mixing or heat cure
- Surface insensitive
- 100% reactive, no solvents
Physical Properties of Uncured Adhesive
Chemical composition | Ethyl cyanoacrylate |
Appearance | Colourless |
Viscosity @ 25°C | 15-50 mPa.s (cP) |
Specific gravity | 1.1 |
Typical Curing Properties
Maximum gap fill | 0.1 mm 0.004 in |
Fixture / handling time* (0.3 N/mm² shear strength is achieved) | 2-3 seconds (Steel) 2-3 seconds (Buna N Rubber) 2-3 seconds (Phenolic) |
Full strength | 24 hours |
Typical Performance of Cured Adhesive
Shear strength* (ISO4587) | Steel 18-22 N/mm² (2600-3200 psi) ABS >6 N/mm² (870 psi)**SF PVC >10 N/mm² (1450 psi)**SF PC >6 N/mm² (870 psi)**SF |
Tensile strength (ISO6922) | >20 N/mm² (>3000 psi) |
Coefficient of thermal expansion | 90 x 10-6 mm/mm/°C |
Coefficient of thermal conductivity | 0.1 W/(m.K) |
Hardness (ISO868) | 85 Shore D |
Dielectric Strength | 25 kV/mm |
