PERMABOND® 108 is an intermediate viscosity cyanoacrylate that is used to bond through intermediate gaps. It is fast setting and suitable for use on plastics, rubber and metals.
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
- Fast-setting
- Some gap fill ability
- Ideal for automated dispensing
Physical Properties of Uncured Adhesive
Chemical composition | Ethyl cyanoacrylate |
Appearance | Colourless |
Viscosity @ 25°C | 400-600 mPa.s (cP) |
Specific gravity | 1.1 |
Typical Curing Properties
Maximum gap fill | 0.25 mm 0.008 in |
Fixture / handling time* (0.3 N/mm² shear strength is achieved) | 10 seconds (Steel) 10 seconds (Buna N Rubber) 10 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) |
