Huntsman - ARALDITE CW 2243-1 / ARADUR HY 842

Enhanced TDS

Identification & Functionality

Chemical Family: Epoxy & Epoxy Derivatives
RTU Product Type: Casting Resin
Technologies: Composite Materials
Product Families: Composite Materials — Resin Systems
Casting

Features & Benefits

Ready-to-Use Product Features

Flexible,

High Temperature Curing,

Room Temperature Curing,

Thermal Shock Resistant

Features and Benefits

Flexible castings with good thermal aging stability
Good thermal shock resistance
Complies with the requirements of UL 94

Applications & Uses

Composites Processing Methods

Product End Uses

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 ARALDITE® casting mix under a vacuum of 5 – 10 mbar improves homogeneity as well as the dielectric properties of the casting.

Application Information

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

Processing Methods

Casting / Vacuum casting

Properties

Physical Form: Liquid

Regulatory & Compliance

Certifications & Compliance: ANSI/UL 94,
ISO 9001

Technical Details & Test Data

Properties

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

Property	Value	Unit	Test method
Specific gravity (at 25°C)	approx 1.5	g/cm³	DIN 55990
Shore D hardness (at 25°C)	approx. 39	Shore D	DIN 53505
Glass Transition temperature	approx. 5	°C	-
Max. tensile stress (at 25°C)	approx. 6	MPa	ISO/R 527
Elongation (at 25°C)	approx. 22	%	ISO/R 527
Elastic modulus (at 25°C)	approx. 26	MPa	ISO/R 527, tensile test
Flammability	V-0 (6mm)	-	UL 94
Water absorption (1 day at 23°C)	approx. 0.58	%	ISO 62
Water absorption (30 min at 100°C)	approx. 0.78	%	ISO 62
Coefficient of linear thermal expansion (at 24- 105°C)	approx. 120	ppm/K	DIN 53752
Thermal conductivity (at 23°C)	approx. 0.58	W/m·K	DIN 52612
Electrolytic corrosion	AN/1.4	-	DIN 53489
Tracking resistance (CTI)	min. 600	M-0.1	DIEC 112
Dielectric strength	approx. 16	kV/mm	IEC 243

Safety & Health

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.

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

Araldite® CW 2243-1 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.
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.

Other