ABLESTIK 2105
Harmonization Code : 3506.91.90.99 | 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 ; Adhesives based on polymers of headings 3901 to 3913 or on rubber; Other ; Other
Main features
- 20-Minute Pot Life
- 6,000 mPa s Mixed Viscosity
- 420 V/mil Dielectric Strength
Product Description
LOCTITE ABLESTIK 2105 is a clear, colorless, solvent-free two-part epoxy adhesive for electrically insulating bonds to glass, ceramics, plastics, and metals. Resin and hardener mix 100:25 by weight. At 25 deg C, typical mixed viscosity is 6,000 mPa s and pot life is 20 minutes. Guideline cure schedules are 24 hours at 25 deg C or one to four hours at 65 deg C. Typical cured dielectric strength is 420 V/mil; volume resistivity at 25 deg C is 2 x 10^14 ohm-cm. The cured operating-temperature range is -70 to 140 deg C, with a typical glass transition temperature of 120 deg C.
Key features
- 100:25 resin-to-hardener ratio: The two components are proportioned by weight; typical mixed viscosity is 6,000 mPa s at 25 deg C.
- Cured electrical insulation properties: Typical dielectric strength is 420 V/mil; volume resistivity at 25 deg C is 2 x 10^14 ohm-cm.
- 120 deg C glass transition: The typical glass transition temperature applies to the cured epoxy, which has a -70 to 140 deg C operating range.
Applications
Fiber-optic connectors; medical-device assembly; structural laminating; aerospace and electronic applications.
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Component System
Two (Resin | Hardener)
Describes the number of components that must be supplied, mixed, or activated before application or cure.
Pot Life
20 minutes
Pot life is the amount of time it takes for the viscosity of a material to double (or quadruple for lower viscosity materials) in room temperature after a material is mixed.
It is closely related to work life but it is not application dependent, less precise and more of a general indication of how fast a system is going to cure.
Specific Gravity
1.12
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.
Thermal Properties
Glass Transition Temperature (Tg)
120 °C
The glass transition temperature for organic adhesives is a temperature region where the polymers change from glassy and brittle to soft and rubbery. Increasing the temperature further continues the softening process as the viscosity drops too. Temperatures between the glass transition temperature and below the decomposition point of the adhesive are the best region for bonding.
The glass-transition temperature Tg of a material characterizes the range of temperatures over which this glass transition occurs.
Operating Temperature
-70 to 140 °C
Physical Properties
Thixotropic index
1.0
Thixotropic Index is a ratio of a material s viscosity at two different speeds in Ambient temperature, generally different by a factor of ten.
A thixotropic material s viscosity will decrease as agitation or pressure is increased. It indicates the capability of a material to hold its shape. Mayonnaise is a great example of this. It holds its shape very well, but when a shear stress is applied, the material easily spreads.
It helps in choosing a material in accordance to the application, dispense method and viscosity of a material.
Mechanical Properties
Elongation
4 %
Elongation is the process of lengthening something.
It is a percentage that measures the initial, unstressed, length compared to the length of the material right before it breaks.
It is commonly referred to as Ultimate Elongation or Tensile Elongation at break.
Chemical Properties
Water Absorption
0.24 %
Electrical Properties
Dielectric Strength
16.5 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.
Volume Resistivity
2×10¹⁴ Ohms⋅cm
Volume resistivity, also called volume resistance, bulk resistance or bulk resistivity is a thickness dependent measurement of the resistivity of a material perpendicular to the plane of the surface.
Additional Information
Technical properties
As-supplied / before-processing properties
Values are typical and not specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Technology | Two-part epoxy | - | Non-conductive adhesive |
| Appearance | Clear, colorless | - | Mixed material |
| Mix ratio by weight | 100:25 | resin:hardener | Two-component system |
| Mixed viscosity | 6,000 | mPa s | 25 deg C |
| Specific gravity | 1.12 | - | Mixed material |
| Pot life | 20 | min | 25 deg C |
| Cure schedule | 24 h at 25 deg C or 1 to 4 h at 65 deg C | - | Guideline schedule |
Technical properties
After-processing / final-state properties
Values are typical and not specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Operating temperature | -70 to 140 | deg C | Cured adhesive |
| Shore D hardness | 84 | - | 1 h cure at 65 deg C |
| Glass transition temperature | 120 | deg C | Cured material |
| Water absorption | 0.24 | % | 24 h immersion |
| Dielectric strength | 420 | V/mil | Cured material |
| Volume resistivity | 2 x 10^14 | ohm-cm | 25 deg C |
| Aluminum lap shear | 15 | N/mm2 | 1 h cure at 65 deg C |
