Enhanced TDS
Identification & Functionality
- Chemical Family
- Fillers Included
- RTU Product Type
- Technologies
- Product Families
Features & Benefits
- Ready-to-Use Product Features
- Product Features
- Low viscosity.
- Long pot life.
- High flexibility after cure.
- Very good thermal ageing resistance.
Applications & Uses
- Composites Processing Methods
- Product End Uses
- Markets
- Applications
- Processing Methods
Casting; vacuum casting.
- Application Information
- Voltage regulators.
- Suppressor chokes.
- Proximity switches.
- Ferrite core transformers.
- Processing Information
Preparation
CW 2243-2L contains fillers, which tend to settle over time. It is therefore recommended to carefully homogenize the complete contents of the container before use. In the storage vessels of the production equipment, the pre-filled products should be stirred up from time to time to avoid sedimentation and irregular metering.
Mixing
The casting mix is best prepared by heating the resin up to 40-50 °C before stirring in the hardener. Brief degassing of the mix under 5-10 mbar vacuum improves the mixture homogeneity and enhances the dielectric properties of the castings.
Curing
To determine whether cross-linking has been carried to completion and the final properties are optimal, it is necessary to carry out relevant measurements on the actual object or to measure the glass transition temperature. Different gel and cure cycles in the customer’s manufacturing process could lead to a different degree of cross- linking and thus a different glass transition temperature.
Technical Details & Test Data
- Electrical Properties
Condition: at 23°C. Cured for 2 hours at 80°C.
Property Value Unit Test Method Dielectric strength (3 mm specimen) 22.2 kV/mm IEC 60243-1 Dielectric loss factor (tan δ, 50Hz, 25°C) 14.2 % IEC 60250 Dielectric constant (εr, 50Hz, 25°C) 7.7 - IEC 60250 Volume resistivity (ρ, 25°C) 1.3 x 10¹¹ Ω·cm IEC 60093 Electrolytic corrosion Grade B-1.6 - IEC 60426 Tracking resistance > 600 M-0.1 IEC 60112 - Mechanical & Physical Properties
Condition: at 23°C. Cured for 2 hours at 80°C.
Property Value Unit Test Method Color of Casting Blue - - Glass transition temperature 8 °C ISO 6721 Modulus in Torsion (G’) 15.5 MPa ISO 6721 Tensile strength 3.5 MPa ISO 527 Elongation at break 26 % ISO 527 Elastic Modulus 18 MPa ISO 527 Thermal linear coefficient (Alpha 1) Alpha 1 ppm/K ISO 11359-2 Thermal linear coefficient (Alpha 2) 143 ppm/K ISO 11359-2 Hardness 70 / 20 Shore A / D DIN 53505 Thermal Conductivity 0.53 W/m·K ISO 8894 Tear Growth Resistance 2.24 N/mm DIN 53356 Water absorption (1 day at 23°C) 0.67 % by wt. ISO 62/80 Water absorption (30 min at 100°C) 0.63 % by wt. ISO 62/80
Storage & Handling
- Storage Conditions
- Store the components in a dry place according to the storage conditions stated on the label in tightly sealed original containers.
- Under these conditions, the shelf life will correspond to the expiry date stated on the label.
- After this date, the product may be processed only after reanalysis.
- Partly emptied containers should be tightly closed immediately after use.
Other
- Application Information
Value Units Test Method / Conditions Mix Ratio 0.22 %(W) %(W) Hardener : Resin