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Epoxy system SR1720 / SD7840

Epoxy system <br>SR1720 / SD7840
Quantity Prices
(ex. VAT)
1-5 Kg82.81€
6-15 Kg72.12€
16-30 Kg61.44€
≥30.04 Kg53.42€

High temperature epoxy system SR1720 / SD7840

Each kilo includes 0.79 kg resin + 0.21 kg hardener

Epoxy system specially formulated for high temperature resistance. It exhibits low viscosity which makes it suitable for infusion and RTM applications. It also develops good mechanical properties after an initial posturing at low temperature, for example 50 °C, allowing parts to be demolded. This makes the system possible to be used with non heat resistant moulds and prototypes. Higher temperature resistance, up to 200 °C is possible to be achieved later, with subsequent postcuring cycles.

Physical properties of SR1720 epoxy resin:

Aspect / colour: Yellowish liquid
Viscosity (cps) at 20 oC / 68 oF: 8500(+-1500)
Density at 20 oC / 68 oF: 1.18(+-0.01)

Physical properties of SD7840 hardener:
Aspect / colour: Reddish yellow liquid
Viscosity (cps) at 20 oC: 22(+-4)
Density (g/cm3): 0.97(+-0.01)

Mix properties of SR1720 / SD7840 system:
Weight ratio: 100 / 26 g
Volume ratio: 100 / 32 ml
Mix viscosity (cps) at 30 oC / 86 oF: 450(+-100)

Reactivity of SR1720 / SD7840 system:
Pot life on 500 g mix at 40 oC: 42'
Exothermic peak on 500 g mix (oC) at 40 oC: > 250 oC
Time to reach exothermic peak at 40 oC: 1h 8'

Product MDS

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

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