ARALDITE® CW 5730 N / ARADUR® HY 5731

ARALDITE® CW 5730 N / ARADUR® HY 5731 is a casting resin system with excellent winding impregnation characteristics for processing and curing at high temperatures.

RTU Product Type: Casting Resin

Product End Uses: Automotive Converter, Capacitors, Filters, Inductor Components, Inverters, Modules, Sensors, Transformers

Chemical Family: Epoxy & Epoxy Derivatives

Composites Processing Methods: Casting, Encapsulation, Vacuum Casting

Features: Crack Resistant, Excellent Dielectric Properties, High Temperature Curing, Thermal Shock Resistant

Cure Method: Heat Cure

Enhanced TDS

Identification & Functionality

Chemical Family
Fillers Included
RTU Product Type
Technologies
Product Families

Features & Benefits

Ready-to-Use Product Features
Product Features
  • Excellent thermal endurance.
  • Suitable for thermal class H applications.
  • Good thermal shock resistance.
  • Good dielectric properties.
  • Flammability: UL 94 V-0 (6 mm).

Applications & Uses

Composites Processing Methods
Cure Method
Product End Uses
System Preparation

Preparation

CW 5730 N contains fillers, which tend to settle over time. It is therefore recommended to carefully homogenize the complete contents of the container before use. This measure is particularly important before a partial use, in order to avoid false dosages. Large containers / Ecobulks should only be stirred once a week due to the sensitivity of the product to viscosity buildup. 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 up and homogenize the resin in vessel A at 70 to 90°C and the hardener in vessel B at 30 to 40°C. The optimal mixing temperature for casting lies between 50-70°C Degassing of both components under a vacuum of 1-5 mbar 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.

Properties

Flame Rating

Regulatory & Compliance

Certifications & Compliance

Technical Details & Test Data

Standard Cure Cycle

3 hours 80°C + 6 hours at 100°C

Mechanical & Physical Properties

Determined on standard test specimen at 23°C. Cured for 3h/80 + 6h/100°C.

Specific gravity

ISO 1183

g/cm3

 

1.59

Glass transition temperature

ISO 11357-2

°C

 

25

Modulus in torsion G' at RT

ISO 6721

MPa

 

200

Loss of tensile strength

5,000 / 20,000 hrs

°C/°C

 

204 / 197

Thermal class

IEC 60085

 

 

Class H

Tensile modulus

ISO 527

MPa

 

50

Tensile strength

ISO 527

MPa

 

5.6

Elongation at break

ISO 527

%

 

45

Flexural modulus

ISO 178

MPa

 

130

Flexural strength

ISO 178

MPa

 

6

Thermal linear coefficient Alpha 1
Thermal linear coefficient Alpha 2

ISO 11359-2

ppm/K

 

40
100

Thermal conductivity

ISO 8894-1

W/mK

 

0.61

Hardness (Bottom side)

ISO 868

Shore D

 

60-75*

Hardness (Top side / middle)

ISO 868

Shore D

 

50-60

Flammability

UL 94

BK

E96722

V-0 (6mm)

Glow-wire test (850℃)

IEC 60695-2-11

 

VDE 0471

passed

Water absorption (10 days at 23°C)
Water absorption (30 min at 100°C)

ISO 62/80

% by wt.

 

0.43
0.27

Electrical Properties

Determined on standard test specimen at 23°C. Cured for 3h/80 + 6h/100°C.

Dielectric strength (2 mm specimen)

IEC 60243-1

kV/mm

28

Dielectric loss factor (tan 8, 50Hz, 25°C)

IEC 60250

%

5

Dielectric constant (er, 50Hz, 25°C)

IEC 60250

 

4.9

Volume resistivity (ρ, 25°C)

IEC 60093

Ω cm

1014

Tracking resistance CTI

IEC 60112

grade

> 600

Electrolytic corrosion

IEC 60426

grade

A-1

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
ValueUnitsTest Method / Conditions
Mix Ratio0.28 %(W)%(W)Hardener : Resin