ARALDITE® CW 5725 / ARADUR® HY 5726

Because of the tendency to sedimentation of the filler,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. 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 80-90°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.

Recommended guidelines (depending on equipment used)

• Very good thermal shock resistance
• Very good thermal endurance

Dissipation factor tanδ vs temperature (IEC 250/DIN 53483)

Dielectric constant εr vs temperature (IEC 250/DIN 53483)

Volume Resistivity ρ vs temperature (IEC 93 / DIN IEC 93)

2.5 hours at 90°C + 2.5 hours at 130°C

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

• 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.

Safety Precautions at Workplace
Protective Clothing: Yes
Gloves: essential
Arm Protectors: Recommended when skin contact likely
Goggles/Safety Glasses: Yes
Respirator/Dust Mask: No

Skin Protection
Before Starting Work: Apply barrier cream to exposed skin
After Washing: Apply barrier or nourishing cream
Cleansing of Contaminated Skin: Dab off with absorbent paper, wash with warm water and alkali-free soap, then dry with disposable towels. Do not use solvents.

Clean Shop Requirements
Cover workbenches: Cover with light-colored paper. Use disposable beakers, etc.
Disposal of Spillage: Soak up with sawdust or cotton waste and deposit in a plastic-lined bin.

Ventilation
Ventilation of Workshop: Renew air 3 to 5 times an hour
Ventilation of Workplace: Exhaust fans. Operatives should avoid inhaling vapors.

Store the components in a dry place at 2-40°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.