Epoxy system SR Surf Clear EVO / SD EVO (Medium)

Epoxy system SR Surf Clear EVO / SD EVO with medium hardener for translucent laminates

Each kilo includes 0.72 kg resin + 0.28 kg hardener

Surf Clear epoxy system is specially formulated for the manufacturing of wind-surf boards and surf boards. It is adapted for hand lay up of carbon, aramid, glass and HMP fabrics and is compatible with all core materials and foams.

System characteristics:
Very good UV stability
Hardening without tack
High gloss
Low viscosity
Transparency of laminates
Self leveling
Scratch resistance

SR Surf Clear EVO resin characteristics:
- Very tough epoxy resin with high thermo-mechanical performance. Recommended for high performance wave and slalom wind surf boards and sandwich (or not sandwich for wave riding surf) construction.
- Creates ultra light composite parts with high mechanical resistance and UV stability.
- For surface preparation / plug finishing, high-gloss requirements.
- Other applications: Jewellery, coating of coloured patterns, prototypes.

Instructions for application:
Work in a clean environment with heating facility.
Working temperature: 20 ^oC minimum, 35-40 ^oC maximum.
Maintain a constant temperature during lamination.
Avoid high ambient humidity (< 70%).
Avoid exposure to UV during cure. Laminates and coatings have a polymerization cycle of 14 days at 25 ^oC. Post curing offers greater UV resistance.
Do not wet sand laminates or coatings before 4 days at 25 ^oC.
Do not dilute with acetone, ester or alcohol based solvents.
Keep packaging well sealed as hardener is sensitive to carbonic gas and humidity.
A polyurethane paint finish can be applied without primer after sanding the final layer of resin.

Curing profile:
Wait before post-curing: 24 hours. Minimum cure: 12 hours 40 ^oC. Optimum cure: 8 hours 60 ^oC

PROPERTIES
Physical properties of SR Surf Clear EVO epoxy resin:
Appearance / colour: Light purple liquid
Viscosity (mPa.s) at 20 ^oC: 2925 ± 575
Density (g/cm3) at 20 ^oC: 1,1817

Physical properties of SD EVO medium hardener:
Appearance / colour: Light yellow liquid
Viscosity (mPa.s) at 20 ^oC: 120 ± 25
Density (g/cm3) at 20 ^oC: 0.992

Mix properties of SR Surf Clear EVO / SD EVO medium system:
Mix viscosities (mPa.s) at 20 ^oC: 1570
Mixing ratio by weight: 100 g / 39 g
Mixing ratio by volume: 100 ml / 50 ml (2 / 1)

Reactivity of SR Surf Clear EVO / SD EVO medium system:
Pot life of 150 g mix at 20 ^oC: 10'
Exothermic peak time of 150 g mix at 20 ^oC: 18'
Exothermic temperature (°C) of 150 g mix at 20 ^oC: 228


Product MDS



Intrastat Number for this product: Epoxy: 39073000, Hardener: 29213091