SR8500 / KTA311 epoxy system for cold (or hot) preimpregnation
Each kilo includes 0.83 kg resin + 0.17 kg hardener
SR8500 / KTA311 is a 2 component, slow reactivity, solvent and reactive diluent free matrix system, designed for manual, (hand,) in-house fabric preimpregnation. Before mixing, the 2 components have a storage life of at least 1 year. After mixing and impregnation, the resulting preimpregnated fabric develops the desired tack at room temperature, and may be placed in a freezer. The out (of the freezer) life of this prepreg is at least 1 month. Consequently, this system is a versatile, cost effective solution that helps small production facilities to reduce their stock, and avoid keeping large quantities of various kinds of prepregs in the freezer. Curing temperature range is from 80 to 150 oC.
Applications:
Fabric preimpregnation by hand or machine, filament winding and adhesives. Particularly useful also for very large parts and hot press moulding.
PROPERTIES
Epoxy resin R244:
Aspect / colour: Yellowish viscous liquid
Density (kg/L) at 20 oC: 1.176 ± 0.004
Viscosity (mPa.s) at 20 oC: 9 800 ± 500
Hardener KTA311:
Aspect / colour: White viscous liquid
Viscosity at 20 oC: 6 000 ± 1 000
Density at 20 oC: 1.14 ± 0.01
Mix properties of SR8500 / KTA311:
Weight ratio: 100 / 21 g
Volume ratio: 100 / 21.6 ml
Tack evolution:
Let @ 30 oC for 24 hours or 12 hours at 40 oC
Gel time (mixed SR8500 / KTA311 system, heated immediately at temperature:)
150 oC: 1' 23 ''
130 oC: 3'
120 oC: 5' 40''
110 oC: 11'
100 oC: 20'
90 oC: 36'
80 oC: 1 h 20'
Dry to touch (mixed SR8500 / KTA311 system, heated immediately at temperature:)
150 oC: 1' 53''
130 oC: 4' 30''
120 oC: 8' 40''
110 oC: 20''
100 oC: 38''
90 oC: 1 h 37'
80 oC: 3 h 10'
Recommended post-curing cycle (mixed SR8500 / KTA311 system, put immediately at temperature:)
80 oC: 24 hours
90 oC: 8 hours
100 oC: 4 hours
110 oC: 2 hours
120 oC: 1 hour
130 oC: 15'
150 oC: 8'
For detailed data sheet please contact.
Intrastat Number for this product: Epoxy: 39073000, Hardener: 29213091
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