791 Surface Insensitive Fast Curing Cyanoacrylate Adhesive, Clear
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.
- Extremely fast setting
- Rapid development of high-strength
- Ease of use - no mixing or heat cure
- Surface insensitive
- 100% reactive, no solvents
- Approved to MIL-A-46050C Type II Class 1 & CID A-A-3097 Type II Class 1
| Código PAC | C100379 |
|---|---|
| Marca | Permabond |
| Tipo | Cianoacrilato |
Physical Properties of Uncured Adhesive
- Chemical composition: Ethyl cyanoacrylate
- Appearance: Colourless
- Viscosity @ 25°C: 2 mPa.s (cP)
- Specific gravity: 1.1
Typical Curing Properties
- Maximum gap fill: 0.5mm (0.02")
- 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
*Handling times can be affected by temperature, humidity, and specific surfaces being bonded. Larger gaps or acidic surfaces will also reduce cure speed but this can be overcome by the use of Permabond C Surface Activator (CSA) or Permabond QFS 16.
Typical Performance of Cured Adhesive
- Shear strength* (ISO4587): Steel 18-22 N/mm2 (2600-3200 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 10-6mm/mm/°C
- Coefficient of thermal conductivity: 0.1 W/(m.K)
- Hardness (ISO868): 85 Shore D
*Strength results will vary depending on the level of surface preparation and gap.
**SF = Substrate failure
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