Laminating epoxy system SR8200 / SD7203 with medium hardener
Each kilo includes 0.73 kg resin + 0.27 kg hardener
The SR8200 / SD7203 system exhibits very good mechanical properties, high elongation, fatigue resistance, low odor during application and relatively low cost. The maximum temperature resistance is at least 90 oC; however, some post curing is required in order to have service temperature of 60 - 70 oC. Typical applications include bows, masts and long service bending products.
Medium hardener SD7203:
Offers fast hardening of laminates at ambient temperature for hand laminating, press or vacuum. Good mechanical properties at ambient temperature, excellent after post cure.
PROPERTIES
Physical properties of SR8200 epoxy resin:
Aspect / colour: Yellowish liquid
Viscosity (mPa.s) at 20 oC: 2900 ± 600
Density at 20 oC: 1.175 ± 0.01
Physical properties of SD7203 hardener:
Aspect / colour: Yellowish liquid
Viscosity (mPa.s) at 20 oC: 120 ± 25
Density at 20 oC: 1.01 ± 0.01
Mix properties of SR8200 / SD7203 system:
Weight ratio: 100 / 37 g
Volume ratio: 100 / 43 ml
Mix viscosity at 20 oC: 1050 ± 200
Reactivity of SR8200 / SD7203 system:
Pot life for 100 g mix at 25 oC: 2 h 33'
Exothermic temperature for 100 g mix at 20 oC: 40 oC
Time to reach exothermic peak for 100 g mix at 20 oC: 4 h 26'
Intrastat Number for this product: Epoxy: 39073000, Hardener: 29213091
Product MDS