LAIRD CR-124
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
- Below 5 GHz Absorption Range
- 100:2.6 Controlled Mixing
- Up to 150 deg C Service Temperature
Product Description
ECCOSORB™ CR-124 Castable Epoxy Absorber is a two-part, castable epoxy microwave absorber for molding waveguide terminations, attenuators, loads, and custom absorber shapes or for potting localized radio-frequency leakage. The CR-124 grade uses a 100:2.6 Part A-to-Part B mix ratio and is positioned for frequencies below 5 GHz. The material is processed warm to improve pourability and may be cured from 75°C to 150°C using the documented schedule. Shared CR-family properties include low outgassing, service below 180°C, low water absorption, and suitability for aerospace, defense, telecom, and test applications.
Key features
- Below-5 GHz grade: CR-124 is the lower-frequency standard grade in the CR family.
- Castable epoxy absorber: The system can mold terminations, attenuators, loads, and custom absorber shapes.
- Low-outgassing family: The CR series is documented for low-outgassing applications.
Applications / Suitable for
- Waveguide terminations and loads
- Attenuators and custom absorber shapes
- Localized RF-leakage potting
TDS, SDS & Technical Documents
Technical Specifications
No specifications available.
Additional Information
As-supplied / before-processing properties
Typical as-supplied or processing-state values unless otherwise stated. These values are not sales specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Product form | Two-part castable epoxy absorber | N/A | Part A and Part B |
| Color | Dark gray | N/A | Product family |
| Mix ratio | 100:2.6 | parts by weight | Part A : Part B |
| Recommended frequency range | <5 | GHz | CR-124 grade |
| Pot life | Approximately 30 | min | At 65°C |
| Cure options | 12 h at 75°C; 4 h at 90°C; 2 h at 120°C; 1 h at 150°C | N/A | Documented schedules |
After-processing / final-state properties
Typical cured or final-state values under the stated system and test conditions. These values are not sales specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Service temperature | <180 | °C | CR family |
| Coefficient of thermal expansion | 30 × 10⁻⁶ | 1/°C | CR family |
| Water absorption | 0.1 | % | Seven-day immersion |
| Flexural strength | 15,000 | psi | Typical CR-family value |
| Total mass loss | 0.08 to 0.51 | % | ASTM E595 |
| Collected volatile condensable material | 0.001 to 0.01 | % | ASTM E595 |
