PERMABOND® 799 is a high viscosity cyanoacrylate that combines fast cure with the ability to cure through a large gap. Plastics, metals, ceramics and elastomers are also rapidly bonded. The fast cure minimizes the occurrence of frosting and fogging. This adhesive is particularly well-suited for used on porous substrates, since it fixtures before wicking into the surface pores.
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 | 5000 mPa.s (cP) |
Specific gravity | 1.1 |
Typical Curing Properties
Maximum gap fill | 0.5 mm 0.02 in |
Fixture / handling time* (0.3 N/mm² shear strength is achieved) | 8 seconds (Steel) 8 seconds (Buna N Rubber) 8 seconds (Phenolic) |
Full strength | 24 hours |
Typical Performance of Cured Adhesive
Shear strength* (ISO4587) | Steel 20-22 N/mm² (2900-3200 psi) ABS 8 N/mm² (1160 psi)** PVC >10 N/mm² (>1450 psi)** Polycarbonate 10 N/mm² (1450 psi)** |
Impact strength (ASTM D-950) | 3-5 kJ/m² (1.4-2.4 ft-lb/in²) |
Dielectric constant @10kHz | 2.5 |
Dielectric strength | 25 kV/mm |
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 |
