Epoxy system SR5550 / SD5502 (Ultra Slow)

 

Marine epoxy system SR5550 / SD5502 with ultra slow hardener

Each kilo includes 0.78 kg resin + 0.22 kg hardener

The SR5550 is specially formulated for ambient temperature curing of marine and wood composites (laminating, bonding and protection of wood.) It has an excellent adhesion to all types of wood. It is handy, with adjustable working time, as it comes with 3 hardeners (fast, slow and ultra slow,) has low viscosity, and is crystallization free. Suitable for room temperature applications, it gives a high gloss finish, with low surface pollution, and UV stability. This marine epoxy system has a low toxicity and should be preferred for laminating composite applications where post curing is not possible.

Curing:
SR5550 epoxy system cures at ambient temperature. Full cure after: 7 days at 25 ^oC or 48 hrs at 30 ^oC or 12 hrs at 40 ^oC or 6 hrs at 60 ^oC.

PROPERTIES
Physical properties of SR5550 epoxy resin:
Aspect / colour: Yellowish liquid
Viscosity (m.Pas +-20%) at 20 ^oC: 1300
Density (g/cm3) at 20 ^oC: 1.145

Physical properties of SD5502 hardener:
Aspect / colour: Yellowish liquid
Viscosity (m.Pas +-20%) at 20 ^oC: 90
Density (g/cm3) at 20 ^oC: 0.97

Mix properties of SR5550 / SD5502 system:
Viscosity of the mix (m.Pas +-20%) at 20 ^oC: 1150
Weight ratio: 100 / 28 g
Volume ratio: 100 / 33 ml or 3 / 1

Reactivity of SR5550 / SD5502 system:
Pot life for 100 g mix at 25 ^oC: 1 h 05'
Exothermic temperature (^oC) for 100 g mix at 20 ^oC: 40
Time to reach the exothermic temperature for 100 g mix at 20 ^oC: 2 h 15'
Drying time, set to touch on 1 mm wet film at 20 ^oC: 4 h 20'
Time before sanding at 25 ^oC: 12 hrs