ES253 EPOXY MATRIX ES253 EPOXY MATRIX ES253 EPOXY MATRIX ES253 EPOXY MATRIX ES253 EPOXY MATRIX ES253

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1 ES253 EPOXY MATRIX GENERAL FEATURES ES253 is particularly suitable for composite tooling construction. MAIN CHARACTERISTICS ES253 is supplied in the form of both Glass and Carbon pre-preg to offer the following advantages: low curing temperature system: 15 hours at 45 C (113 F) or 12 hours at 50 C (122 F) or 4 hours at 60 C (140 F) uniform resin distribution excellent tack and drapeability good surface finish work life of 2 5 days at room temperature (20 C) and 12 months when stored at -18 C low shrinkage during the curing and postcuring process high Tg after post-cure process very low pre-preg volatile content suitable for both autoclave/vacuum-bag and compression moulding use release agent suitable for hot epoxy resin system (film release, wax, freekote, etc.)

2 OPERATIONAL INSTRUCTIONS CURE PROCESS RECOMMENDATIONS This epoxy matrix system can be processed at low temperature, starting from 45 C*. Just as indication, see below curing cycle: Temperature C F Time Tg C F DSC h h h *Personalized cure cycle can be developed with SAATI Technical Department, in order to fulfil customer manufacturing process optimization. AUTOCLAVE Once determined the processing temperature and corresponding cure time, use these processing parameters in the following cure cycle (45 C curing cycle is shown on the table 45 C-50 C-60 C curing cycle are shown on the graph): Step Temperature C F Time h Heating rate to isothermal C min F min Pressare bar psi Vacuum

3 CURING CYCLE temperature [ C] time [minutes] POST-CURING CYCLE temperature [ C] time [minutes] Post-curing ramp: heating 16h, isotherm 6h, cooling 2h

4 RESIN MATRIX GENERAL PROPERTIES Property Unit Value Standard Storage life C F months Out life C F days Prepreg volatiles wt ASTM D R Cured resin density g cm ASTM D Tg DSC C F ASTM D Tg E DMA C F ASTM E Tg Peak Tan δ DMA C F ASTM E Tack High *Laminate Fully Cured C THERMO-MECHANICAL DMA ANALYSIS DMA trace of ES253 laminate cured for 50 C and post-cured 180 C. DMA Analysis Hz

5 VISCOSITY PROFILE Viscosity profile temperature vs complex viscosity Resin complex viscosity is measured under 3 C/min heating rate, 1Hz oscillating frequency. GEL TIME 1000 Time [min] Temperature C F Gel Time min Temperature [ C]

6 SAFETY HAZARD This product contains epoxy resin. May cause allergic reaction. Avoid prolonged contact with skin. The use of latex gloves for handling is suggested. It is also suggested to work in an aerated environment. Scraps are to be cured and discarded following national law. Note: For further information check the Material Safety Data Sheet. DELIVERY FORM AND PACKAGING The prepreg fabrics are rolled on 75 mm of diameter cardboard cores with release paper on one side and polyethylene film separator on the other side. It is delivered on rolls sealed in waterproof plastic bag and packed in cardboard boxes. Standard width: 100 cm. Standard length: 50 m. The prepreg UD are rolled on 300 mm of diameter cardboard cores with release paper on one side (or no flat polyethylene film as alternative) and no flat polyethylene film separator on the other side. It is delivered on rolls sealed in waterproof plastic bag and packed in cardboard boxes. Standard width: 60cm (from 30cm up to 90cm). Standard length: 100 m. HANDLING AND CONDITIONING Stock rolls at -18 C, sealed in original packages. Shop life at 23 C refers to rolls sealed in original packages. Before the use of the prepreg, get out the roll from the freezer and let it warm up to room temperature for 6 hours sealed in its original package. (RDS , Rev. 6 of October, 2010) SAATI S.p.A. Phone: (+39) Fax: (+39) info.it@saati.com