ABLESTIK FDA 2
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
- 1.20 x 10^14 ohm-cm Volume Resistivity
- 3-Hour Working Window
- 1,800 psi Aluminum Lap Shear
Product Description
LOCTITE® ABLESTIK FDA 2 BIPAX is a two-part, electrically insulating epoxy adhesive for medical-device bonding applications. Formerly known as TRA-BOND FDA2, the amber, medium-viscosity system mixes at 100:100 by weight and provides a typical pot life of 45 minutes and work 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 adhesive has a documented operating-temperature range of -70 to 145°C, typical volume resistivity of 1.20 × 1014 ohm-cm at 25°C, and aluminum-to-aluminum lap shear strength of 1,800 psi.
Key features
- Electrically insulating: Typical cured properties include volume resistivity of 1.20 × 1014 ohm-cm at 25°C and dielectric strength of 420 V/mil.
- Medium-viscosity processing: Typical mixed viscosity of 14,000 mPa·s at 25°C supports controlled adhesive application.
- Room-temperature or heat cure: Guideline 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
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Chemistry Type
Epoxy
Color
Amber
The color
Mix Ratio
100 : 100
The amount of a constituent divided by the total amount of all other constituents in a mixture
Pot Life
45 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.
Work life @25°C
3 hours
Work life is the amount of time we have to work with a material until it is no longer able to be easily worked and applied on a substrate.
It is based on the change in viscosity and it can rely on the application requirements.
Thermal Properties
Glass Transition Temperature (Tg)
54 °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 145 °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.
Viscosity
14000 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
Elongation
9 %
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
1.20×10¹⁴ 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 mixed two-part adhesive before cure.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Technology | Epoxy | — | Two-part resin and hardener system |
| Color | Amber | — | Mixed adhesive |
| Mix ratio — resin:hardener | 100:100 | by weight | Resin-to-hardener ratio |
| Mixed viscosity | 14,000 | mPa·s (cP) | Brookfield RV, spindle 7, 10 rpm at 25°C |
| Thixotropic index | 1.0 | — | Test details not stated |
| Specific gravity — mixed | 1.12 | — | Mixed adhesive |
| Reactive solids content | 100 | % | Typical value |
| Pot life | 45 | minutes | Test conditions and endpoint not stated |
| Work 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 | 5.30 × 10-5 | cm/cm/°C | Method, temperature region, and cure condition not stated |
| Glass-transition temperature | 54 | °C | Ultimate Tg; method and cure condition not stated |
| Hardness | 80 | Shore D | Method and cure condition not stated |
| Elongation | 9 | % | Method and cure condition not stated |
| Volume resistivity at 25°C | 1.20 × 1014 | ohm-cm | Test method and specimen configuration not stated |
| Dielectric strength | 420 | V/mil | Test method, thickness, and conditioning not stated |
| Dielectric constant | 3.4 | — | At 25°C and 1 kHz |
| Dissipation factor | 0.02 | — | At 25°C and 1 kHz |
| Lap shear strength — aluminum to aluminum | 1,800 | psi | Substrate preparation, bondline, cure condition, test method, and test temperature not stated |
