Epoxy system SR Surf Clear EVO / SD EVO

Epoxy system SR Surf Clear EVO / SD EVO for translucent laminates

Each kilo includes 0.72 kg resin + 0.28 kg hardener

SR Surf Clear EVO 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: 2000 (+-400)
Density (g/cm3) at 20 ^oC: 1.17 (+-0.01)

Physical properties of SD EVO hardener:
Appearance / colour: Water clear liquid
Viscosity (mPa.s) at 20 ^oC: 50 (+-10)
Density (g/cm3) at 20 ^oC: 0.960 (+-0.01)

Mix properties of SR Surf Clear EVO / SD EVO system:
Mix viscosities (mPa.s) at 20 ^oC: 540
Mixing ratio by weight: 100 g / 38 g
Mixing ratio by volume: 100 ml / 50 ml (2 / 1)

Reactivity of SR Surf Clear EVO / SD EVO system:
Gel time 150 g mix at 25 ^oC: 20'
Dry to touch on 500 microns film at 25 ^oC: 2 h
Thru-dry, sandable at 25 ^oC: 10 h


Product MDS



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