LOCTITE 4541
Harmonization Code : 3910.00.00.90 | Silicones in Primary Forms; Others
Main features
- Non-Drip Vertical Application
- Fast Porous-Material Fixturing
- Multi-Material Instant Bonding
Product Description
LOCTITE 4541 is a one-part ethyl cyanoacrylate gel for instant bonding of porous, absorbent and vertical assemblies. Its transparent to slightly cloudy gel has a typical viscosity of 18,000 to 40,000 mPa s at 25 deg C, limiting adhesive flow even on vertical surfaces. Atmospheric humidity initiates cure, with fixture times of 2 to 10 seconds on aluminum, ABS, PVC and phenolic substrates under specified conditions. It bonds wood, paper, leather and fabric, along with supported metals, plastics and elastomers.
Key features
- Non-drip gel control: Gel consistency limits adhesive flow on vertical surfaces.
- Fast humidity cure: Fixture times are 2 to 10 seconds on several specified substrates at 22 deg C and 50% RH.
- Porous-material fit: Bonding applications include wood, paper, leather and fabric.
Applications
Bonding wood, paper, leather and fabric, including porous or absorbent materials and vertical assemblies.
TDS, SDS & Technical Documents
Technical Specifications
General Properties
AppearanceAppearance
Transparent to slightly cloudy gelChemistry TypeChemistry Type
Ethyl cyanoacrylateSpecific GravitySpecific Gravity
1.1Other Properties
Storage TemperatureStorage Temperature
2 °C to 8 °CElectrical Properties
Volume ResistivityVolume Resistivity
10×10¹⁵ Ohms⋅cmPhysical Properties
ViscosityViscosity
18,000 to 40,000 mPa.sThermal Properties
Glass Transition Temperature (Tg)Glass Transition Temperature (Tg)
120 °CThermal ConductivityThermal Conductivity
0.1 W/m.KAdditional Information
Technical properties
As-supplied / before-processing properties
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Appearance | Transparent to slightly cloudy gel | Uncured; LMS | |
| Specific gravity | 1.1 | Typical; 25 deg C | |
| Viscosity | 18,000 to 40,000 | mPa s | Typical; Brookfield RVT; spindle TC; 20 rpm; Helipath; 25 deg C |
Technical properties
After-processing / final-state properties
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Coefficient of thermal expansion | 80 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 |
| Glass transition temperature | 120 | deg C | Typical; ASTM E 228; 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 |
