PERMABOND 790

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

PERMABOND 790

Main features

  • 2 to 3-Second Handling Time
  • Surface-Insensitive Acidic-Substrate Bonding
  • Low-Viscosity Wicking Post-Assembly Bonding

Product Description

Permabond® 790 Cyanoacrylate is an extremely fast-setting, low-viscosity, surface-insensitive adhesive designed to rapidly bond a wide variety of substrates. Its specialized formulation readily bonds acidic surfaces such as wood and plated metals, along with plastics, ceramics, and elastomers. Featuring a highly penetrative wicking viscosity, this 100% reactive, solvent-free adhesive is ideal for post-assembly applications and minimizes the occurrence of frosting and fogging during cure.

Key features

  • Extremely fast setting: Single-component formula polymerizes rapidly upon contact with surface moisture, delivering fixture handling times of 2-3 seconds on steel and rubber.
  • Surface insensitive: Expertly engineered to rapidly bond notoriously difficult acidic surfaces, including wood and plated materials.
  • Low wicking viscosity: The exceptionally low 2 cP viscosity enables superior wicking action, making it perfectly suited for post-assembly penetration and application.

Applications / Suitable for

  • Bonding acidic surfaces such as wood and plated materials
  • Adhering plastics, metals, ceramics, and elastomers
  • Post-assembly applications utilizing wicking penetration
Product Family

PERMABOND 790

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TDS, SDS & Technical Documents

Technical Specifications

General Properties
Appearance
Appearance at room temperature.
Liquid
Chemistry Type
Ethyl cyanoacrylate
Color
The color
Colourless
Specific Gravity
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.
1.1
Physical Properties
Viscosity
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
2 mPa.s mPa.s
Mechanical Properties
Impact Strength
3-5 kJ/m² mm
Thermal Properties
Thermal Conductivity
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.
0.1 W/m.K
Electrical Properties
Dielectric Strength
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.
25 kV/mm
Maximum gap fill
0.05 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 - -
Viscosity 2 cP at 25°C (mPa.s)
Specific Gravity 1.1 - -
Maximum Gap Fill 0.05 mm (0.002 in)
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 2-3 seconds Steel, Buna N Rubber, Phenolic
Full Strength 24 hours -
Shear Strength 18-22 N/mm² Steel (ISO 4587) (2600-3200 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 -

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