Epoxy Casting Resin WATER-CLEAR + Hardener W 300

Resin component for the System Epoxy casting resin WATER-CLEAR + Hardener W 300

• Highly transparent, almost water clear components
• Good UV resistance
• Largely free of air bubbles
• Polishable, hard surface
• Very good impact strength
• Low shrinkage
• Can be coloured with R&G Universal colour pastes or transparent colours and dry pigments of all types
  
• Can be modified with all kinds of fillers (metal powder, effect pigments, dry sand, etc.)
• Also suitable for coatings and as laminating resin system with very long pot life

Mixing ratio:
100 : 35 parts by weight of resin to hardener

Pot life (135 g / 20 °C (68 °F)): approx. 300 minutes
Curing time: approx. 24–72 h (depending on volume, layer thickness and temperature)

Application:
Aquaristics, terraristics, arts and crafts, wood finishing, furniture construction (Rivertable), slides, aircraft, ship, car and railway model construction.

Processing:
For optimum results, resin and hardener should be dosed by weight.
(Mixing ratio by weight is not equal to mixing ratio by volume due to different specific weights of resin and hardener.)

After mixing the resin and hardener, the casting resin must be poured into the mould as quickly as possible to avoid an exothermic reaction in the mixing vessel. This is especially true when larger quantities are processed.

The reaction heat (exothermic) generated during hardening limits the maximum quantity to be poured in one operation and the layer thickness.
The higher the temperature and/or layer thickness and/or volume, the shorter the processing/gelling time.
If a certain limit is exceeded, the resin system heats up exponentially until undesired reactions finally occur: The casting discolours completely or in places, from light yellow to dark brown, cracks appear and increased shrinkage occurs.
Furthermore, a restless, wavy surface is formed. In extreme cases, the casting can "boil" completely or partially. Temperatures above 100 °C then occur.

Layer thicknesses up to 5 cm for small volumes up to approx. 500 ml and layers from 1-2 cm for large volumes up to approx. 30 liters can be cast.

At temperatures above 25 °C (77 °F), we strongly advise against casting larger layer thicknesses and/or larger volumes in one operation.

For thin coatings we recommend our Epoxy Resin HT 2 with Hardener HT 2.