ABLESTIK 970-1N1
Harmonization Code : 3919.10.80 | Other self-adhesive plastic rolls not exceeding 20 cm wide.
Main features
- Thixotropic Application Control
- 20.7 N/mm^2 Aluminum Lap Shear
- 90-Minute Working Window
Product Description
LOCTITE® ABLESTIK 970-1N1 is a blue, sag-resistant epoxy adhesive for general assembly applications across a wide range of substrates. The material provides a typical mixed viscosity of 60,400 mPa·s, a 90-minute work life at 25°C, and heat-cure options of 2 hours at 70°C or 30 minutes at 100°C. After curing for 2 hours at 70°C, typical aluminum-to-aluminum lap shear strength is 20.7 N/mm². The cured adhesive also has a typical Shore D hardness of 75 and a glass-transition temperature of 83°C.
Key features
- Sag-resistant consistency: A thixotropic index of 2.0 supports controlled placement before cure.
- Strong aluminum bonding: Typical aluminum-to-aluminum lap shear strength is 20.7 N/mm² after curing for 2 hours at 70°C.
- Flexible heat-cure options: Guideline schedules include 2 hours at 70°C or 30 minutes at 100°C.
Applications / Suitable for
- General assembly bonding
- Applications requiring sag-resistant adhesive placement
- Aluminum-to-aluminum bonding under the documented cure condition
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Appearance
Blue
Appearance at room temperature.
Chemistry Type
Epoxy
Specific Gravity
1.06
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
1.5 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)
83 °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.
Physical Properties
Thixotropic index
2.0
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
60400 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
Additional Information
Technical properties
As-supplied / before-processing properties
Typical properties, storage information, and guideline cure schedules for the adhesive before final processing.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Technology | Epoxy | — | General-purpose adhesive |
| Appearance | Blue liquid | — | As supplied |
| Mixed viscosity | 60,400 | mPa·s (cP) | Brookfield CP52, 2.5 rpm |
| Thixotropic index | 2.0 | — | 1/10 rpm |
| Specific gravity | 1.2 | — | SDS physical-property value |
| Work life | 90 | minutes | At 25°C |
| Cure schedule | 2 hours or 30 minutes | — | 2 hours at 70°C or 30 minutes at 100°C; guideline recommendations |
| Optimal storage | -40 | °C | Store unopened in a dry location |
Technical properties
After-processing / final-state properties
Typical cured-material properties and bonded-joint performance. Values are reference data and are not product specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Hardness | 75 | Shore D | Cure condition and test method not stated |
| Specific gravity — cured | 1.06 | — | Test method and cure condition not stated |
| Glass-transition temperature | 83.0 | °C | TMA, 20°C/minute; cure condition not stated |
| Coefficient of thermal expansion — Alpha 1 | 60.0 | ppm/°C | Temperature range and cure condition not stated |
| Lap shear strength — aluminum to aluminum | 20.7 (3,000) | N/mm² (psi) | Cured for 2 hours at 70°C; substrate preparation, bondline, and test method not stated |
