PERMABOND 940
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
- Non-Frosting Alkoxyethyl Formulation
- Low-Odor Cyanoacrylate Bonding
- Fast Multi-Substrate Fixturing
Product Description
Permabond® 940 Cyanoacrylate is a low-odor, non-frosting, alkoxyethyl-based cyanoacrylate adhesive engineered to improve worker comfort and maintain a clean aesthetic. This 100% reactive, single-component adhesive cures rapidly at room temperature, eliminating the unsightly white fogging (blooming) that commonly occurs with standard cyanoacrylates on hot and humid days. It is surface-insensitive and rapidly bonds a wide range of materials, including plastics, metals, elastomers, and acidic surfaces.
Key features
- Low odor formulation: Alkoxyethyl chemistry significantly reduces irritating fumes, improving worker comfort during application.
- Non-frosting/Non-fogging: Eliminates the white residue (blooming) adjacent to the bondline, ensuring a flawless aesthetic appearance on finished parts.
- Fast room-temperature cure: Provides rapid fixture times (e.g., 2-5 seconds on Neoprene/NBR and 10-15 seconds on steel), eliminating the need for mixing or heat.
Applications / Suitable for
- Applications requiring a clean, fog-free aesthetic finish
- Environments where low-odor adhesives are necessary for worker comfort
- Rapid bonding of plastics, metals, and elastomers
Technical Specifications
General Properties
Appearance
Liquid
Appearance at room temperature.
Chemistry Type
Alkoxyethyl 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
3-10 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
Linear thermal expansion
90 x 10^-6 mm/mm/°C
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
0.05 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 | Alkoxyethyl cyanoacrylate | - | - |
| Appearance | Colorless | - | Liquid |
| Viscosity | 3-10 | cP | at 25°C (mPa.s) |
| Specific Gravity | 1.1 | - | - |
| Maximum Gap Fill | 0.05 | mm | (0.002 in) |
| Flash Point | 80-93 | °C | (176°F - 199.94°F) |
| Volatile Organic Compound | < 2 | % | 20 g/L (Estimated) |
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 | 10-15 | seconds | Steel, Aluminium, PVC, Phenolic resin, ABS |
| Full Strength | 24 | hours | - |
| Shear Strength | 16-20 | N/mm² | Steel (ISO 4587) (2300-2900 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 | 3 | - | DIN 53483 at 1MHz |
| Dielectric Strength | 25 | kV/mm | DIN 53481 |
| Coefficient of Thermal Expansion | 90E-6 | mm/mm/°C | - |
| Coefficient of Thermal Conductivity | 0.1 | W/(m.K) | - |
