ARALDITE® CW 1305 / ARADUR® HY 5809

• Good thermal endurance.
• Excellent electro-mechanical properties.
• Excellent moisture and chemical resistance.
• Chemically inert towards sensitive substrates..
• Flammability: UL 94 V-0 (4 mm).

Casting / vacuum casting.

• Units operating in environments combining heat and corrosion.
• Units incorporating heat-evolving components.

Preparation

• ARALDITE® CW 1305 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.

Mixing

• 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.

Curing

• To determine whether cross-linking has been carried to completion and the final properties are optimal, it is necessary to carry out relevant measurements on the actual object or to measure the glass transition temperature.
• Different gel and cure cycles in the customer’s manufacturing process could lead to a different degree of cross- linking and thus a different glass transition temperature.
• When casting thick sections special care is needed to avoid excessive exothermic temperature rise.
• Short high-temperature curing schedules (without initial gelling at 80°C) should not be used unless preliminary trials with castings manufactured to the specific design, and in the specified moulds, produce no unacceptable exothermic effects.

The curing reaction produces an exothermic temperature rise in the mixture dependent on:

1. Temperature at commencement of mixing
2. Thermal capacity of moulds and inserts
3. Mass and shape of the castings

Condition : at 23°C. Cured for 24h/RT + 6h/60°C.

Condition : at 23°C. Cured for 4h/80°C+ 4h/120°C.

• Store the components in a dry place according to the storage conditions stated on the label 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.