Ciba Specialty Chemicals Performance Polymers Structural Composites MATRIX SYSTEMS FOR AEROSPACE COMPOSITES MATRIX SYSTEMS FOR INDUSTRIAL COMPOSITES DATA SHEET Cold-curing epoxy system based on Araldite LY 564 / Hardener HY 560 Araldite LY 564 is a low-viscosity epoxy resin Hardener HY 560 is based on polyamines Applications Aerospace and industrial composites, aircraft repair, tooling Properties Processing Highly reactive laminating system with favourable properties after cure at lower temperatures. A system that has proven its reliability in various cold-cure applications. Wet lay-up Pressure Moulding Resin Transfer Moulding (RTM) Key data Araldite LY 564 Storage Aspect (visual) clear liquid Viscosity C (ISO 9371B) 1200-1400 [mpa s] Density C (ISO 1675) 1.1-1.2 [g/cm 3 ] Flash point (ISO 2719) 185 Storage temperature (see expiry date on original container) Hardener HY 560 2-40 Aspect (visual) yellow liquid Viscosity C (ISO 9371B) 300-450 [mpa s] Density C (ISO 1675) 0.95-1.0 [g/cm 3 ] Flash point (ISO 2719) 105 Storage temperature (see expiry date on original container) 2-40 Provided that Araldite LY 564 and Hardener HY 560 are stored in a dry place in their original, properly closed containers at the above mentioned storage temperatures they will have the shelf lives indicated on the labels. Partly emptied containers should be closed immediately after use. January 1998
Processing data Mix ratio Components Parts by weight Parts by volume Araldite LY 564 Hardener HY 560 100 27 100 32 We recommend that the components are weighed with an accurate balance to prevent mixing inaccuracies which can affect the properties of the matrix system. The components should be mixed thoroughly to ensure homogeneity. It is important that the side and the bottom of the vessel are incorporated into the mixing process. When processing large quantities of mixture the pot life will decrease due to exothermic reaction. It is advisable to divide large mixes into several smaller containers. Initial mix viscosity (Hoeppler, ISO 9371B) [mpa s] 600-1000 200-250 Viscosity build-up (Hoeppler, ISO 9371B) [mpa s] to 1500 to 3000 [min] 15-25 20-50 to 1500 to 3000 17-25 22-30 Pot life (Tecam, 100 ml, 65 % RH) [min] 20-25 Gel time (Hot plate) at 60 at 80 at 100 at 120 [min] 600 75-85 20-30 5-9 1-3 0.5-1.5 The values shown are for small amounts of pure resin/hardener mix. In composite structures the gel time can differ significantly from the given values depending on the fibre content and the laminate thickness. Gelation at 23 C (in thin layers: 0.4-0.7 mm) Start End [h] 1.5-3 3-5 Typical cure cycles or or 2 h 100 C The optimum cure cycle has to be determined case by case depending on the processing and the economic requirements. January 1998 Cold-curing epoxy system based on Araldite LY 564 / Hardener HY 560 2/6
Glass transition temperature (IEC 1006, DSC, 10 K/min) 7 days 25 C 15 h 60 C 4 h 100 C Properties of the cured, neat formulation T G 46-55 74-85 77-86 90-100 90-100 Tensile test (ISO 527) Tensile strength Ultimate elongation Tensile modulus 61-67 1.9-2.2 3650-3800 78-82 5.0-5.5 3380-3560 74-80 4.5-7.5 3000-3200 Flexural test (ISO 178) Flexural strength Elongation at flexural strength Ultimate strength Ultimate elongation Flexural modulus 128-140 6.2-7.2 120-132 8.5-10.2 2900-3200 Fracture properties Bend notch test (PM 258-0/90) Fracture toughness K 1C Fracture energy G 1C [MPa m] [J/m 2 ] 0.69-0.76 120-140 Water absorption (ISO 62) Immersion: 4 days H 2 O 23 C 10 days H 2 O 23 C 30 min H 2 O 100 C 60 min H 2 O 100 C 0.68 1.15 0.80 1.14 0.54 1.02 0.74 1.10 0.34 0.72 0.66 1.04 Coefficient of linear thermal expansion (DIN 53 752) Mean value: α from 20-90 C [10-6 /K] 70-75 Poison s ratio [µ] 0.35 January 1998 Cold-curing epoxy system based on Araldite LY 564 / Hardener HY 560 3/6
Properties of the cured, reinforced formulation Flexural test (ISO 178) Samples: 16 layers (4 mm) E-glass fabric 1:1, 280-300 g/m 2 Fibre volume content: 45-46 % Ultimate strength Ultimate elongation Flexural modulus 440-455 2.7-3.0 21500-22500 495-515 3.0-3.3 20500-21500 Tensile, Compressive and Torsion test (TCT) Samples: Glass Roving: OCF 859-885 Tex Fibre weight content: 78.5-80.5 % Transverse tensile test Tensile strength Tensile strain Elastic modulus 40-44 2.0-2.2 19500-21000 38-41 2.1-2.3 18700-20200 Torsional test Shear strength Shear angle Shear modulus 55-57 20-37 7000-8500 61-63 37-45 6900-7300 Transverse compressive test Compressive strength Compressive strain Elastic modulus 120-130 8-10 18000-19500 120-140 12-13 16500-18500 Interlaminar shear strength (ASTM D 2344) Short beam: E-glass unidirectional specimen Laminate thickness t = 3.2 mm Fibre volume content: 60 % Shear strength 42-47 49-54 January 1998 Cold-curing epoxy system based on Araldite LY 564 / Hardener HY 560 4/6
Handling precautions Mandatory and recommended industrial hygiene procedures should be followed whenever our products are being handled and processed. For additional information please consult the corresponding product safety data sheets and the brochure "Hygienic precautions for handling plastics products" (Publ. No. 24264/e). Personal hygiene First aid Safety precautions at workplace protective clothing yes gloves essential arm protectors recommended when skin contact likely goggles/safety glasses yes Skin protection before starting work after washing Apply barrier cream to exposed skin Apply barrier or nourishing cream Cleansing of contaminated skin Dab off with absorbent paper, wash with warm water and alkali-free soap, then dry with disposable towels. Do not use solvents Disposal of spillage Ventilation of workshop of workplaces Soak up with sawdust or cotton waste and deposit in plastic-lined bin Renew air 3 to 5 times an hour Exhaust fans. Operatives should avoid inhaling vapours Contamination of the eyes by resin, hardener or mix should be treated immediately by flushing with clean, running water for 10 to 15 minutes. A doctor should then be consulted. Material smeared or splashed on the skin should be dabbed off, and the contaminated area then washed and treated with a cleansing cream (see above). A doctor should be consulted in the event of severe irritation or burns. Contaminated clothing should be changed immediately. Anyone taken ill after inhaling vapours should be moved out of doors immediately. In all cases of doubt call for medical assistance. January 1998 Cold-curing epoxy system based on Araldite LY 564 / Hardener HY 560 5/6
Ciba Specialty Chemicals Performance Polymers Registered trademark Publ. No. 24665/1/e All recommendations for use of our products, whether given by us in writing, verbally, or to be implied from the results of tests carried out by us are based on the current state of our knowledge. Notwithstanding any such recommendations the Buyer shall remain responsible for satisfying himself that the products as supplied by us are suitable for his intended process or purpose. Since we cannot control the application, use or processing of the products, we cannot accept responsibility therefor. The Buyer shall ensure that the intended use of the products will not infringe any third party's intellectual property rights. We warrant that our products are free from defects in accordance with and subject to our general conditions of supply. Printed in Switzerland