LAIRD CR112
Harmonization Code : 3907.30.00.40 | Epoxy Mold Compounds containing by weight more than 70 % silicon dioxide
Main features
- 12-to-18-GHz Absorber Grade
- Castable Two-Part Epoxy System
- Molded and Localized RF Absorption
Product Description
Eccosorb CR-112 is a two-part castable epoxy microwave absorber for molding waveguide terminations, attenuators, loads, and custom RF parts or for precisely potting small absorber volumes around RF leakage paths. The system combines Part A resin and Part B catalyst at 100:11.3 by weight. Heating Part A to about 65 deg C improves pourability, and the mixed material has about 30 minutes of pot life at 65 deg C. Recommended cure options range from 1 hour at 150 deg C to 12 hours at 75 deg C. After cure, CR-112 is recommended for the 12 to 18 GHz range.
Key features
- 12-to-18-GHz absorber grade: The recommended frequency range for CR-112 is 12 to 18 GHz.
- Two-part castable epoxy: Part A resin and Part B catalyst mix at 100:11.3 by weight.
- Moldable RF absorption: The liquid system molds terminations, attenuators, loads, and custom RF parts.
Applications
Waveguide terminations, attenuators, loads, molded RF parts, and localized potting around RF leakage paths.
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Thermal Properties
Additional Information
As-supplied / before-processing properties
Product-selection data for the exact CR-112 grade; component safety coverage is not represented here.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Product form | Two-part castable system | Part A resin and Part B catalyst | |
| Resin chemistry | Epoxy | As supplied | |
| Color | Dark gray | Typical; exact CR-112 part page | |
| Mix ratio, Part A:Part B | 100:11.3 | by weight | CR-112 |
| Minimum shelf life | 180 | days | From date of shipment; exact part page |
After-processing / final-state properties
Values are typical design data for the cured CR-112 material and are not specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Recommended frequency range | 12 to 18 | GHz | CR-112 |
| Service temperature | Below 180 | deg C | CR family; typical |
| Density | 1.60 | g/cm^3 | Exact CR-112 part page; typical |
| Linear expansion coefficient | 30 x 10^-6 | per deg C | Typical |
| Water absorption | 0.1 | % | 7 days immersion; typical |
| Flexural strength | 15,000 | psi | Typical |
| Outgassing TML / CVCM | 0.510 / 0.010 | % | Exact CR-112 part page; typical |
