ARALDITE® CW 2243 L Grey / ARADUR® HY 842

ARALDITE® CW 2243 L Grey / ARADUR® HY 842 is an optimally filled casting system for processing and curing at room temperature or slightly higher temperatures.

RTU Product Type: Potting Resin System

Product End Uses: Automatic Chokes, Coils, Insulation, Switches, Transformers

Chemical Family: Epoxy & Epoxy Derivatives

Composites Processing Methods: Vacuum Casting

Features: Flexible, Good Thermal Ageing Stability, Thermal Shock Resistant

Cure Method: Heat Cure

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Enhanced TDS

Identification & Functionality

Features & Benefits

Ready-to-Use Product Features
Product Features
  • Flexible castings with good thermal ageing stability
  • Good thermal shock resistance
  • Flammability: UL 94 approval (V-0 for 6 mm)

Applications & Uses

Composites Processing Methods
Cure Method
Product End Uses
Markets
Applications
Processing Methods

Casting / Vacuum casting

Processing Information
  • The filled resin component should be stirred and homogenized in the original container before use.
  • 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.
Application Information

Small transformers (line transformers, switch-mode, coils, chokes)

 

Properties

Flame Rating

Regulatory & Compliance

Certifications & Compliance

Technical Details & Test Data

Properties

Condition : cured for 24 h/25°C+6 h/60°C

Property Value Unit Test method
Colour of casting (at 25°C) Grey - -
Specific gravity (at 25°C) 1.5 g/cm³ DIN 55990
hardness (at 25°C) 39 Shore D DIN 53505
Glass transition temperature (Tg) 5 °C

DSC, Mettler TA 3000

Max. tensile stress (at 25°C) 6 MPa ISO/R 527
Elongation (at 25°C) 22 % ISO/R 527
Elastic modulus (tensile test) 26 MPa ISO/R 527
Flammability V-0 (6 mm) - UL 94
Water absorption, 1 day at 23°C 0.58 % ISO 62
Water absorption, 30 min at 100°C 0.78 % ISO 62
Coefficient of linear thermal expansion (at 24-105°C) 120 ppm/K DIN 53752
Thermal conductivity (at 23°C) 0.58 W/m·K DIN 52612
Electrolytic corrosion AN/1.4 - DIN 53489
Tracking resistance (CTI) > 600 M-0.1 IEC 112
Electric strength (at 23°C, 20 s value for 2 mm, plate (50 Hz)) 16 kV/mm IEC 243

 

 

Dielectric constant ε r vs temperature (DIN 53483)

ARALDITE® CW 2243-1 / ARADUR® HY 842 - Properties - 1

 

Loss factor tan δ (DIN 53483)

ARALDITE® CW 2243-1 / ARADUR® HY 842 - Properties - 1

 

Specific volume resistance ρ vs temperature DIN 53482

ARALDITE® CW 2243-1 / ARADUR® HY 842 - Properties - 1

 

Safety & Health

Disposal

Regular procedures approved by national and/or local authorities

First Aid
  • Contamination of the eyes by resin, hardener or casting mix should be treated immediately by flushing with clean, running water for 10 to 15 minutes. A doctor should then be consulted.
  • Material smeared or splashed on the skin should be dabbed off, and the contaminated area then washed and treated with a cleansing cream (see above). A doctor should be consulted in the event of severe irritation or burns. Contaminated clothing should be changed immediately.
  • Anyone taken ill after inhaling vapours should be moved out of doors immediately. In all cases of doubt call for medical assistance.
Industrial Hygiene

Mandatory and recommended industrial hygiene procedures should be followed when- ever our products are being handled and processed. For additional information please consult the corresponding

Handling Precautions
protective clothing yes
gloves essential
arm protectors

recommended when skin contact likely

goggles/safety glasses yes
respirator/dust mask recommended
Skin protection

Apply barrier cream to exposed skin.

before starting work

Apply barrier or nourishing cream.

after washing

Dab off with absorbent paper, wash with

Cleansing of contaminated skin

warm water and alkali-free soap, then dry with disposable towels. Do not use solvents.

Clean shop requirements

Cover workbenches, etc. with light coloured paper. Use disposable breakers, etc.

Disposal of spillage

Soak up with sawdust or cotton waste and deposit in plastic-lined bin.

Ventilation:
of workshop

Renew air 3 to 5 times an hour.

of workplace

Exhaust fans. Operatives should avoid inhaling vapours.

Storage & Handling

Storage Conditions
  • Store the components in a dry place at room temperature, 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.