ARALDITE® CW 5725-6 / ARADUR® HY 5726-2

• Low viscosity.
• Very good impregnation.
• Very good thermal shock resistance.
• High thermal endurance.
• Excellent anti settling properties.
• Inline with REACH regulations

Preparation
CW 5725-6 contains mineral fillers, which could settle over time. It is therefore recommended to ensure homogeneity through careful stirring the complete content 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 or put in by-pass mode to avoid sedimentation, blocking of valves or irregular metering.

Mixing
To facilitate stirring and removal, highly-filled components are heated to 70-90°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 70 - 80°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.

Determined on standard test specimen at 23°C. Cured for 2.5h/85°C + 2.5h/130°C.

Determined on standard test specimen at 23°C. Cured for 2.5h/85°C + 2.5h/130°C.

Fig. 7.1: Dielectric loss factor tanδ f(T) – IEC 60250

Fig. 7.2: Dielectric constant εR f(T) – IEC 60250

After curing, the components should be cooled down to min. 80°C along 1h in an unheated cabinet to exclude draughts and extremes of temperature.

2.5 hours at 85°C + 2.5 hours at 130°C

Store the components in a dry place in tightly sealed original containers. Under these conditions, the shelf life will correspond to the expiry date. Partly emptied containers should be tightly closed immediately after use.