LOCTITE 4471
Harmonization Code : 3910.00.00.90 | Silicones in Primary Forms; Others
Main features
- Fast Difficult-Surface Fixturing
- Uniform-Stress Assembly Bonding
- Porous and Plated Surface Bonding
Product Description
LOCTITE 4471 is a one-part medium-viscosity ethyl cyanoacrylate instant adhesive that cures with atmospheric humidity. It is formulated for difficult-to-bond assemblies requiring uniform stress distribution and strong tension or shear performance. Typical viscosity is 500 to 750 mPa s at 25 deg C. Fixture times at 22 deg C and 50% RH range from under 5 seconds on neoprene and nitrile rubber to 2 to 5 seconds on ABS, PVC and polycarbonate. The adhesive bonds wood, leather, foamed rubber, acidic surfaces and freshly plated parts.
Key features
- Rapid fixture development: Fixture times are under 5 seconds on neoprene and nitrile rubber under specified conditions.
- Medium-viscosity control: Typical viscosity is 500 to 750 mPa s at 25 deg C by Brookfield RVT.
- Difficult-surface bonding: Supported substrates include porous materials, acidic surfaces and freshly plated parts.
Applications
Bonding wood, leather, foamed rubber, acidic surfaces and freshly plated parts.
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Appearance
Clear liquid
Appearance at room temperature.
Chemistry Type
Ethyl cyanoacrylate
Specific Gravity
1.05
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
500 to 750 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
Other Properties
Storage Temperature
2 °C to 8 °C
Thermal Properties
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.
Additional Information
Technical properties
As-supplied / before-processing properties
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Appearance | Clear liquid | Uncured; LMS | |
| Specific gravity | 1.05 | Typical; 25 deg C | |
| Viscosity | 500 to 750 | mPa s | Typical; Brookfield RVT; spindle 2; 20 rpm; 25 deg C |
Technical properties
After-processing / final-state properties
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Coefficient of thermal expansion | 100 x 10^-6 | K^-1 | Typical; ISO 11359-2; after 24 h at 22 deg C |
| Thermal conductivity | 0.1 | W/(m K) | Typical; ISO 8302; after 24 h at 22 deg C |
| Dielectric breakdown strength | 25 | kV/mm | Typical; IEC 60243-1; after 24 h at 22 deg C |
| Volume resistivity | 10 x 10^15 | ohm cm | Typical; IEC 60093; after 24 h at 22 deg C |
| Lap shear strength - steel | 18 to 26 | N/mm^2 | Typical; ISO 4587; grit-blasted steel; after 24 h at 22 deg C |
| Lap shear strength - aluminum | 11 to 19 | N/mm^2 | Typical; ISO 4587; etched aluminum; after 24 h at 22 deg C |
