ABLESTIK FDA 22
Harmonization Code : 5906100000 | Adhesive tape of a width not exceeding 20cm
Main features
- 1.50 x 10^14 ohm-cm Volume Resistivity
- 3-Hour Working Window
- 2,100 psi Aluminum Lap Shear
Product Description
LOCTITE® ABLESTIK FDA 22 is a two-part, electrically insulating epoxy adhesive for medical-device bonding and coating applications. The tan, high-viscosity system mixes at 100:40 by weight and provides a typical pot life of 3 hours. It can be cured for 24 hours at 25°C or accelerated for 1 to 4 hours at 65°C. The cured material has a documented operating-temperature range of -70 to 145°C, typical volume resistivity of 1.50 × 1014 ohm-cm at 25°C, and aluminum-to-aluminum lap shear strength of 2,100 psi.
Key features
- Electrically insulating: Typical cured properties include volume resistivity of 1.50 × 1014 ohm-cm at 25°C and dielectric strength of 420 V/mil.
- High-viscosity epoxy system: Mixed viscosity of 28,000 cP at 25°C supports controlled application in bonding and coating processes.
- Room-temperature or heat cure: Guideline cure schedules include 24 hours at 25°C or 1 to 4 hours at 65°C.
Applications / Suitable for
- Catheters
- Hearing aids
- Dental products
- Other biomedical instruments and devices
- Bonding and coating applications
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Appearance
Tan
Appearance at room temperature.
Chemistry Type
Epoxy
Component System
Two part - Resin & Hardener
Describes the number of components that must be supplied, mixed, or activated before application or cure.
Mix Ratio
100 : 40
The amount of a constituent divided by the total amount of all other constituents in a mixture
Pot Life
3 hours
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
1.45
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
Operating Temperature
-70 to 145 °C
Physical Properties
Thixotropic index
1.2
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
5 %
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.
Electrical Properties
Volume Resistivity
1.5 x 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
Typical properties and processing characteristics of the two-part adhesive before cure.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Technology | Epoxy | — | Two-part resin and hardener system |
| Appearance | Tan | — | Mixed adhesive |
| Mix ratio — resin:hardener | 100:40 | by weight | Resin-to-hardener ratio |
| Mixed viscosity | 28,000 | cP | At 25°C; method not stated |
| Thixotropic index | 1.2 | — | 5/50 rpm |
| Specific gravity — mixed | 1.45 | — | Mixed adhesive |
| Reactive solids content | 100 | % | Typical value |
| Pot life | 3 | hours | Test conditions and endpoint not stated |
| Cure schedule | 24 hours or 1–4 hours | — | 24 hours at 25°C or 1–4 hours at 65°C; guideline recommendations |
| Optimal storage | 27 | °C | Store unopened in a dry location; package labeling governs applicable storage information |
Technical properties
After-processing / final-state properties
Typical properties and performance data for the cured adhesive. Values are reference data and are not product specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Operating-temperature range | -70 to 145 | °C | Documented product range |
| Coefficient of thermal expansion | 47 | ppm/°C | Method, temperature region, and cure condition not stated |
| Hardness | 78 | Shore D | Method and cure condition not stated |
| Elongation | 5 | % | Method and cure condition not stated |
| Volume resistivity at 25°C | 1.50 × 1014 | ohm-cm | Test method and specimen configuration not stated |
| Dielectric strength | 420 | V/mil | Test method, thickness, and conditioning not stated |
| Dielectric constant | 3.5 | — | At 25°C and 1 kHz |
| Dissipation factor | 0.02 | — | At 25°C and 1 kHz |
| Lap shear strength — aluminum to aluminum | 2,100 | psi | Substrate preparation, bondline, cure condition, test method, and test temperature not stated |
