Enhanced TDS
Identification & Functionality
- Chemical Family
- Fillers Included
- RTU Product Type
- Technologies
- Product Families
Features & Benefits
- Ready-to-Use Product Features
- Product Features
- Very good thermal shock resistance
- Very good thermal endurance
- Low viscosity
- Good storage stability
- Very good impregnation properties
Applications & Uses
- Composites Processing Methods
- Cure Method
- Product End Uses
- System Preparation
Preparation
Araldite® CW 5725-3 Resin contains some fillers, which tend to settle over time. It is therefore recommended to carefully homogenize the container content before using. The material present in the production equipment storage tank should be stirred from time to time to prevent separation and inconsistent metering.Mixing
To facilitate stirring and removal, highly-filled components are heated to 60-80°C in the original container (e.g. overnight in an oven).
To prepare the casting mix the resin component should be homogenized in holding tank A at 70 - 80°C under a vacuum of 1-5 mbar, the hardener component in holding tank B at 30 - 40°C and a vacuum of 1 - 5 mbar. A metering unit should be used to feed the resin and hardener components to an impeller mixer.- Applications
- Automotive ignition coils
- Casting / vacuum casting
Technical Details & Test Data
- Mechanical & Physical Properties
Determined on standard test specimen at 23°C. Cured for 2.5h/90°C + 2.5h/130°C.
Color of casting
Visual
Black
Specific gravity
DIN 55990
g/cm2
1.73
Glass transition temperature
ISO 11357
°C
135- 150
Elastic modulus in flexion
ISO 178
MPa
7000
Max. bending stress
ISO 178
MPa
93-95
Surface strain (failure)
%
1.45-1.55
Double torsion test
PM 216-0/89
MPa m1/2
2.0 - 2.2
Double torsion test
PM 216-0/89
J/m2
475-700*
Coefficient of linear thermal expansion
DIN 53 752
ppm/K
35
Thermal conductivity
ISO 8894-1
W/mK
0.65
Hardness (4 mm plate)
DIN 53505
Shore D
90
Water absorption
ISO 62/80
10 days at 23°C
30 min at 100°CISO 62/80
% by wt.
0.08
0.05- Electrical Properties
Determined on standard test specimen at 23°C. Cured for 2.5h/90°C + 2.5h/130°C.
Dielectric strength (1 mm specimen)
IEC 60243-1
kV/mm
38
Volume resistivity, ρ ( 25°C)
IEC 60093
Ω cm
4.0 x1015
Tracking resistance
With test solution A
With test solution BIEC 60112
grade
CTI>600-0.1
CTI>600M-0.1Electrolytic corrosion
IEC 60426
grade
A-1
- Minimum Curing Time
2.5 hours at 90°C + 2.5 hours at 130°C
- Processing Guidelines
After curing, the components should be cooled down to min. 80°C for at least one hour in an enclosed area to exclude draughts and sudden temperature changes which might otherwise induce cracks in the cured casting.
Packaging & Availability
- Packaging Information
Araldite® CW 5725-3 Resin and Aradur® HY 5726 Hardener are supplied in 2,850 and 2,400 pounds totes respectively.
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), Araldite® CW 5725-3 Resin and Aradur® HY 5726 Hardener have a 12 months shelf-life from date of manufacture. The product should not be exposed to direct sunlight.
Other
- Application Information
Value Units Test Method / Conditions Mix Ratio 0.28 %(W) %(W) Hardener : Resin