ARALDITE® CW 2245 / ARADUR® HY 226

ARALDITE® CW 2245 / ARADUR® HY 226 is a flame-retardant, epoxy-based casting system for processing and curing at room temperature or slightly higher temperatures.

RTU Product Type: Casting Resin, Impregnating Resin System

Product End Uses: Capacitors, Filters, Transformers

Chemical Family: Epoxy & Epoxy Derivatives

Composites Processing Methods: Casting, Impregnation

Features: Flame Retardant, Good Shock Resistance, Good Thermal Conductivity, High Temperature Curing, High Temperature Resistance, Low Shrinkage, Room Temperature Curing

Enhanced TDS

Identification & Functionality

Features & Benefits

Ready-to-Use Product Features
Features and Benefits
  • Low shrinkage on curing
  • Good thermal conductivity
  • Good temperature and shock resistance
  • *Tested to AS 2431 – 1981 – Electrical equipment for explosive
  • Atmospheres – report available
  • Complies with the requirements of UL 94 V-0

Applications & Uses

Composites Processing Methods
Product End Uses
Processing Methods
  • Casting / Impregnating
  • Manually or with automatic mixing and dosing equipment
Processing Information
  • Because of the tendency to sedimentation of the filler, pre-filled components in principle require stirring before removal from the original containers. To avoid errors in dosage, this step is especially important when removing only part of the contents. Prefilled ARALDITE component IS heated to 40°C - 60°C in the original container to facilitate stirring and removal.
  • In preparing the ARALDITE casting mixture, the ARADUR hardener component is thoroughly stirred into the pre-mixed resin component. Brief degassing of the casting mix under a vacuum of 5 - 10 mbar improves homogeneity as well as the dielectric properties of the casting.

Properties

Flame Rating

Regulatory & Compliance

Certifications & Compliance

Technical Details & Test Data

Electrical Properties

Condition:  at 25°C. Cured for 7 days at 22°C

 

Property Value Unit
Dielectric strength ca. 26 kV/mm
Tracking resistance (CTI) >600 -
Volume resistivity (2 mm) at 24°C 2.00 x 10¹⁴ Ω cm
Volume resistivity (2 mm) at 40°C 1.50 x 10¹³ Ω cm
Volume resistivity (2 mm) at 50°C 1.10 x 10¹² Ω cm
Volume resistivity (2 mm) at 60°C 2.00 x 10¹¹ Ω cm
Volume resistivity (2 mm) at 80°C 2.00 x 10¹⁰ Ω cm
Volume resistivity (2 mm) at 90°C 8.50 x 10⁹ Ω cm
Volume resistivity (2 mm) at 115°C 2.10 x 10⁹ Ω cm
Volume resistivity (2 mm) at 160°C 6.70 x 10⁸ Ω cm
Mechanical & Physical Properties

Condition: at 25°C. Cured for 7 days at 22°C

 

Property Value Unit
Hardness after 24 hours at 25°C ca. 85 Shore D
Hardness after 6 hours at 60°C ca. 90 Shore D
Glass transition temperature by TMA ca. 50 °C
Tensile strength ca. 30 MPa
Elongation at break ca. 1.2 %
Coefficient of thermal expansion ca. 67 mm/m°C × 10⁻⁶
Thermal conductivity ca. 0.6 W/mK
Water absorption (after 10 days immersion) ca. 0.2 % by wt.

Safety & Health

Industrial Hygiene

Mandatory and recommended industrial hygiene procedures should be followed whenever our products are being handled and processed.

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.

 

Disposal

Regular procedures approved by national and/or local authorities

Storage & Handling

Storage Conditions
  • Store the components in a dry place at 18-25°C, 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.
  • ARALDITE®  CW 2245 CI 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.

Other

Application Information
ValueUnitsTest Method / Conditions
Mix Ratio0.12 %(W)%(W)Hardener : Resin