PERMABOND 799
Harmonization Code : 3506.10.00.00 | Prepared glues and other prepared adhesives, not elsewhere specified or included; products suitable for use as glues or adhesives, put up for retail sale as glues or adhesives, not exceeding a net weight of 1 kg
Main features
- Up to 0.5 mm Gap Fill
- 8-Second Fixture Time
- MIL-A-46050C Type II Class 3 Compliance
Product Description
Permabond® 799 Cyanoacrylate is a high-viscosity, surface-insensitive adhesive that combines extremely fast curing with the ability to fill large gaps up to 0.5 mm. This 100% reactive, solvent-free formula minimizes frosting and fogging during cure and is particularly well-suited for porous substrates, as it fixtures before wicking into surface pores. It delivers rapid, high-strength bonds on a variety of materials, including plastics, metals, ceramics, and elastomers.
Key features
- Extremely fast setting: Polymerizes rapidly to achieve handling strength in just 8 seconds on steel, rubber, and phenolic surfaces.
- High viscosity: Specifically formulated with a 5000 cP viscosity to cure through large gaps and excel on porous substrates without premature wicking.
- Industry approved: Approved to stringent military specifications, including MIL-A-46050C Type II Class 3 for existing designs.
Applications / Suitable for
- Bonding plastics, metals, ceramics, and elastomers
- Large gap filling applications up to 0.5 mm
- Porous substrates where adhesive wicking must be prevented
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Appearance
Liquid
Appearance at room temperature.
Chemistry Type
Ethyl cyanoacrylate
Color
Colourless
The color
Specific Gravity
1.1
Specific gravity (SG) is the ratio of the density of a substance to the density of a reference substance; equivalently, it is the ratio of the mass of a substance to the mass of a reference substance for the same given volume.
For liquids, the reference substance is almost always water (1), while for gases, it is air (1.18) at room temperature. Specific gravity is unitless.
Physical Properties
Viscosity
5000 mPa.s mPa.s
Viscosity is a measurement of a fluid’s resistance to flow.
Viscosity is commonly measured in centiPoise (cP). One cP is defined as
the viscosity of water and all other viscosities are derived from this base. MPa is another common unit with a 1:1 conversion to cP.
A product like honey would have a much higher viscosity -around 10,000 cPs-
compared to water. As a result, honey would flow much slower out of a tipped glass than
water would.
The viscosity of a material can be decreased with an increase in temperature in
order to better suit an application
Mechanical Properties
Impact Strength
3-5 kJ/m² mm
Thermal Properties
Thermal Conductivity
0.1 W/m.K
Thermal conductivity describes the ability of a material to conduct heat. It is required by power packages in order to dissipate heat and maintain stable electrical performance.
Thermal conductivity units are [W/(m K)] in the SI system and [Btu/(hr ft °F)] in the Imperial system.
Electrical Properties
Dielectric Strength
25 kV/mm
Dielectric strength is measured in kV per mm and is calculated by the Breakdown voltage divided by the thickness of the tested material.
Those two properties go hand in hand and while Breakdown voltage is always thickness dependent, dielectric strength is a general material property.
As an example, the dielectric strength of Polyimide is 236 kV/mm. If we place 1mm of Polyimide between two electrodes, it will act as an insulator until the voltage between the electrodes reaches 236 kV. At this point it will start acting as a good conductor, causing sparks, potential punctures and current flow.
Maximum gap fill
0.5 mm
Additional Information
Technical properties
As-supplied / before-processing properties
Typical properties; these values are not intended for use in preparing specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Chemical Composition | Ethyl cyanoacrylate | - | - |
| Appearance | Colorless | - | Liquid |
| Viscosity | 5000 | cP | at 25°C (mPa.s) |
| Specific Gravity | 1.1 | - | - |
| Maximum Gap Fill | 0.5 | mm | (0.02 in) |
| Flash Point | 80-93 | °C | (176°F - 199.94°F) |
| Volatile Organic Compound | < 3 | % | EC Directive 2004/42/EC |
Technical properties
After-processing / final-state properties
Typical properties; these values are not intended for use in preparing specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Fixture/Handling Time | 8 | seconds | Steel, Buna N Rubber, Phenolic |
| Full Strength | 24 | hours | - |
| Shear Strength | 20-22 | N/mm² | Steel (ISO 4587) (2900-3200 psi) |
| Impact Strength | 3-5 | kJ/m² | ASTM D-950 (1.4-2.4 ft-lb/in²) |
| Hardness | 85 | Shore D | ISO 868 |
| Dielectric Constant | 2.5 | - | at 10kHz |
| Dielectric Strength | 25 | kV/mm | - |
| Coefficient of Thermal Expansion | 90E-6 | mm/mm/°C | - |
| Coefficient of Thermal Conductivity | 0.1 | W/(m.K) | - |
