LOCTITE UK3364
Harmonization Code : 3907.30.00.40 | Epoxy Mold Compounds containing by weight more than 70 % silicon dioxide
Main features
- 60-120 Second Gel Time
- 1:2 Volume Mix Ratio
- Rigid Fiber-Optic Encapsulation
Product Description
LOCTITE UK 3364 Fiber-Optic Potting and Bonding Compound is a rigid, two-part urethane compound for potting and bonding fiber-optic components and cables. The dark-brown resin and black hardener mix at 1:2 by volume or 42:100 by weight and cure rapidly at room temperature. Typical gel time is 60 to 120 seconds at 25 deg C, with a tack-free surface in 330 to 360 seconds. After cure, the black material provides Shore D hardness of at least 80, 26.7 N/mm^2 tensile strength, and 32 kV/mm dielectric breakdown strength for mechanically rigid, electrically insulating fiber-optic assemblies.
Key features
- Fast Room-Temperature Cure: Provides a 60 to 120 second gel time and 330 to 360 second tack-free time at 25 deg C.
- Fiber-Optic Potting and Bonding: Supports rigid encapsulation and attachment of fiber-optic components and cables.
- Rigid Flame-Resistant Urethane: Cures to a black solid with Shore D hardness of at least 80.
Applications
Applications include potting and bonding fiber-optic components, cable assemblies, and related electrically insulating structures.
TDS, SDS & Technical Documents
Technical Specifications
Physical Properties
General Properties
Mechanical Properties
Thermal Properties
Electrical Properties
Chemical Properties
Additional Information
Component properties
Resin and hardener properties are listed separately before mixing.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Resin appearance | Dark-brown liquid | As supplied | |
| Resin specific gravity | 1.49 | 25 deg C | |
| Resin viscosity | 13,365 | mPa s | 25 deg C, CP50 rheometer, shear rate 100 |
| Hardener appearance | Black liquid | As supplied | |
| Hardener specific gravity | 1.25 | 25 deg C | |
| Hardener viscosity | 850 | mPa s | 25 deg C, CP50 rheometer, shear rate 100 |
| Mix ratio | 1:2 | by volume | Resin : hardener |
| Mix ratio | 42:100 | by weight | Resin : hardener |
Cured potting and bonding properties
Cured properties depend on the specified mix ratio, cure schedule, specimen, and test method.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Gel time | 60 to 120 | s | 25 deg C |
| Tack-free time | 330 to 360 | s | 25 deg C |
| Hardness | >=80 | Shore D | After 60 minutes at 65 deg C |
| Glass transition temperature | 50 | deg C | After 7 days at 22 deg C |
| Tensile strength | 26.7 | N/mm^2 | After 7 days at 22 deg C |
| Dielectric breakdown strength | 32 | kV/mm | After 7 days at 22 deg C |
| Lap shear strength on grit-blasted steel | 19.3 | N/mm^2 | ISO 4587, 0.127 mm gap, cured 7 days at 22 deg C |
