Enhanced TDS
Identification & Functionality
- Chemical Family
- RTU Product Type
- Technologies
- Product Families
Features & Benefits
- Product Features
- Features and Benefits
- Low viscosity for good flow and penetration
- Heat curing
- Long working life for most applications
- Excellent mechanical properties with high tensile elongation
- Low exotherm on cure
- Outstanding thermal shock and thermal cycling resistance
- Good electrical properties
Applications & Uses
- Cure Method
- Product End Uses
- Processing Recommendation
For casting or impregnation it is recommended to mix both the Araldite® CY 9537 Resin and Aradur® HY 9537 Hardener at slightly elevated temperatures in the range of 50°C - 80°C. The parts to be cast or impregnated should also be initially heated at or near the same temperature.
The Araldite® CY/Aradur® HY 9537 US components can be batch mixed or mixed with either a static or dynamic in-line mixer. The working time at 60°C of this system is in the range of 2 to 4 days. For large parts gelling of the system at temperatures in the range of 80°C to 100°C is recommended to minimize internal stresses.
Gelation of the Araldite CY/Aradur® HY 9537 US system can be achieved isothermally at either: 80°C / 90 hours or 90°C / 40 hours or 100°C / 20 hours. A post-cure of either 100°C / 20 hours or 120°C / 10 hours is recommended to achieve full properties. ® A programmed cure can be used such as: ramping temperature initially from 65°C to 90°C in 12 to 15 hours to achieve gel then ramping temperature from 90°C up to 120°C in 5 to 6 hours then holding isothermally at 120°C for 10 hours.
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- Mixing Ratio
Component Parts by weight Parts by volume Araldite® CY 9537 Resin 100 100 Aradur® HY 9537 Hardener 84 86 - Application Information
Araldite® CY 9537 US Resin / Aradur® HY 9537 US Hardener is recommended for casting and impregnation applications of electrical and electronic devices where good mechanical strength, coupled with excellent resistance to mechanical impact and thermal cycling are required. It is ideally suited for impregnation of large transformer coils and magnets.
Properties
- Physical Form
Technical Details & Test Data
- Cured Properties
Tensile Strength 6,045 psi at 23°C, at yield Tensile Modulus 291,000 psi at 23°C, at yield Tensile Elongation 3.42 % at 23°C, at yield Tensile Strength 4,484 psi at 23°C, ultimate
Tensile Elongation 11.53 % at 23°C, ultimate
K1C 2.49 MPa m1/2 at 23°C G1C 2,718 J/m² at 23°C Glass Transition Temperature 53 °C DMA at 23°C, onset Glass Transition Temperature 88 °C DMA at 23°C, tan delta peak
Glass Transition Temperature 54 °C TMA at 23°C Glass Transition Temperature 49 °C DSC at 23°C CTE 80 ppm/°C 20 - 40°C CTE 192 ppm/°C 100 - 120°C Shrinkage 0.42 % TMA at 23°C, after cure
Shrinkage 0.50 % ASTM D 2566 at 100°C Shrinkage 1.28 % ASTM D 2566 at 23°C, after cooling to room temp.
Single Lap Shear Strength 1,503 psi at 23°C, 1/8” epoxy, to Copper, no abrasion
Single Lap Shear Strength 2,115 psi at 23°C, 1/8” epoxy, to Copper, with 40 grit paper
Standard Deviation for Shear Strength 94.6 at 23°C Standard Deviation for Shear Strength 145 at 23°C Dielectric Breakdown Strength 21 - 23 kV/mm IEC 60243-1 at 23°C, at 3 mm
Storage & Handling
- Storage Conditions
When stored in a dry place in their original sealed containers at a temperature within +2°C and +40°C (+35.6°F and 104°F), both Araldite® CY 9537 Resin and Aradur® HY 9537 Hardener have an 18 months shelf-life. Tightly re-seal both containers after each use. Aradur HY 9537 Hardener is a formulated anhydride hardener and is therefore sensitive to the presence of moisture. Blanketing with dry nitrogen is therefore highly recommended. The product should not be exposed to direct sunlight.
Other
- Processing & Application Methods
- Application Information
Value Units Test Method / Conditions Mix Ratio 0.84 %(W) Hardener : Resin - Physical Properties
Value Units Test Method / Conditions Specific Gravity 1.11-1.15 -