ARALDITE® LY 3508 / ARADUR® 3475

• Latent, fast cure and high toughness system for composite parts

• Resin Transfer Moulding (low and high pressure)
• Wet Compression Moulding

• We recommend that the components are weighed with an accurate balance to prevent mixing inaccuracies which can affect the properties of the matrix system. The components should be mixed thoroughly to ensure homogeneity. It is important that the side and the bottom of the vessel are incorporated into the mixing process.
• When processing large quantities of mixture the pot life will decrease due to exothermic reaction. It is advisable to divide large mixes into several smaller containers. Internal release agent with an amount of 0.5 – 2% is typically added to the system. It can either be mixed in as a 3rd component or premixed into the Araldite® LY 3508.
• The added amount depends on internal release agent type and part demolding behavior.

Mix Ratio

• We recommend that the components are weighed with an accurate balance to prevent mixing inaccuracies which can affect the properties of the matrix system. The components should be mixed thoroughly to ensure homogeneity. It is important that the side and the bottom of the vessel are incorporated into the mixing process.
• When processing large quantities of mixture the pot life will decrease due to exothermic reaction. It is advisable to divide large mixes into several smaller containers. Internal release agent with an amount of 0.5 – 2% is typically added to the system. It can either be mixed in as a 3rd component or premixed into the Araldite® LY 3508.
• The added amount depends on internal release agent type and part demolding behavior.

Viscosity Build Up (Brookfield)

Properties of The Cured, Neat Formulation (Thickness 4 mm)

Properties of The Cured, Reinforced Formulation

Note

• Samples: 6 plies Carbon fabric UD (300g/m2); Zoltek Panex 35 UD0300
• Laminate thickness: 2.0 mm
• Fibre volume content: 47 – 53% 

We recommend to specify and assess Tg on composites and not on neat resin. Indeed the exothermic behavior during neat resin coupons production is generating a significant temperature rise resulting in the resin curing to a much higher temperature and hence leading to higher Tg value compared to the final composite part.

Note

• Samples: 6 plies Carbon fabric UD (300g/m2); Zoltek Panex 35 UD0300
• Laminate thickness: 2.0 mm
• Fibre volume content: 47 – 53% 

We recommend to specify and assess Tg on composites and not on neat resin. Indeed the exothermic behavior during neat resin coupons production is generating a significant temperature rise resulting in the resin curing to a much higher temperature and hence leading to higher Tg value compared to the final composite part. 

• Contamination of the eyes by resin, hardener or 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.

• Provided that Araldite® LY 3508 or Aradur® 3475 are stored in a dry place in their original, properly closed containers at the storage temperatures mentioned in the MSDS they will have the shelf lives indicated on the labels.
• Partly emptied containers should be closed immediately after use.
• Epoxy Araldite® LY 3508 which has crystallized and looks cloudy can be restored to its original state by heating to 60 - 80°C.