Enhanced TDS
Identification & Functionality
- Chemical Family
- RTU Product Type
- Technologies
- Product Families
Features & Benefits
- Product Features
- Product Features
- Anhydride-Cured, low-viscosity standard matrix system with extremely long pot life.
- The reactivity of the system is adjustable by variation of the accelerater content.
- The system is easy to process, has good fibre impregnation properties and exhibits excellent mechanical, dynamic and thermal properties.
Applications & Uses
- Cure Method
- Product End Uses
- Product Processing Instructions
- Pultrusion
- Pressure Molding
- Filament Winding
- Processing Recommendation
To simplify the mixing process the resin can be preheated to about 30 °C to 50 °C before adding the cold hardener. Hardener and accelerator can be premixed, thus allowing the use of two component mixing/metering equipment. The mix of hardener and accelerator has a shelf life of several days.
The processing of the system at elevated temperatures of 30 °C to 40 °C shows the best results. The gelation temperature should not be higher than absolutely necessary. A high gelation temperature induces high shrinkage and generates internal stresses.- Mixing Ratio
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.
Properties
- Physical Form
- Notes
Processing Properties : Typical Cure Cycles
Stage Time Temperature Gelation 2 – 4 h 80 °C 1 – 3 h 90 °C Post-Cure 4 – 8 h 120 °C 2 – 8 h 140 °C Cure temperatures in excess of about 130 °C cause brown discolouration but do not impair the properties of the product.
Technical Details & Test Data
- Properties of The Cured, Neat Formulation
Glass Transition Temperature (Tg) (IEC 1006, DSC,10 K/min)
Cure Tg [°C] 4 h 80 °C 95 – 100 1 h 100 °C 110 – 115 4 h 100 °C 115 – 120 1 h 120 °C 125 – 130 4 h 80 °C + 4 h 120 °C 130 – 135 4 h 80 °C + 4 h 140 °C 133 – 138 Tensile Test (ISO 527)
Property Unit Value Tensile strength MPa 88 – 91 Elongation at tensile strength % 5.0 – 6.0 Ultimate strength MPa 87 – 94 Ultimate elongation % 5.5 – 6.5 Tensile modulus MPa 3100 – 3200 Flexural Test (ISO 178)
Property Unit Value Flexural strength MPa 150 – 155 Elongation at flexural strength % 6.5 – 7.0 Ultimate strength MPa 148 – 155 Ultimate elongation % 6.5 – 7.0 Flexural modulus MPa 3200 – 3350 Fracture Properties Bend Notch Test (PM 258-0/90)
Property Unit Value Fracture toughness K1C MPa√m 0.57 – 0.60 Fracture energy G1C J/m² 110 – 120 Water Absorption (ISO 62)
Cure: 4h 80 °C + 4h 140 °C
Condition Unit Value 1 day H₂O at 23 °C % 0.10 – 0.15 10 days H₂O at 23 °C % 0.35 – 0.40 60 min H₂O at 100 °C % 0.20 – 0.25 Poisson’s Ratio
Unit Value μ 0.35 - Properties of The Cured, Reinforced Formulation
Unless otherwise stated, the figures given are for pressed laminate samples comprising 12 layers (3.1 - 3.25 mm) of E-glass fabric UD, 425 g/m2, fibre volume content 61 - 64 %.
Flexural Test (ISO 178)
Property Unit Value Flexural strength MPa 1000 – 1100 Elongation at surface % 2.3 – 2.5 Flexural modulus MPa 45000 – 46000 Interlaminar Shear Strength (ASTM D 2344)
Short beam: E-glass unidirectional specimen
Laminate thickness t = 3.1 - 3.25 mm
Fibre volume content: 61 - 64 %Property Unit Value Shear strength MPa 60 – 62 "
Safety & Health
- Handling Precautions
Personal hygiene Safety precautions at workplace protective clothing overalls gloves essential arm protectors recommended when skin contact likely goggles/safety glasses yes Skin protection before starting work Apply barrier cream to exposed skin after washing 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 solventsDisposal of spillage Soak up with sawdust or cotton waste and deposit in
plastic-lined binVentilation of workshop Renew air 3 to 5 times an hour Ventilation of workplaces Exhaust fans. Operatives should avoid inhaling
vapoursFirst Aid : 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.
Storage & Handling
- Storage Conditions
- Provided that ARALDITE® LY 556, ARADUR® 917-1 and ACCELERATOR 960-1 are stored in a dry place in their original, properly closed containers at the storage temperatures they will have the shelf lives indicated on the labels.
- Partly emptied containers should be closed immediately after use.Because ARADUR® 917 is sensitive to moisture, storage containers should be ventilated with dry air only.
- ARALDITE® LY 556 which has crystallized and looks cloudy can be restored to its original state by heating to 60 - 80 °C.
Other
- Processing & Application Methods
- Application Information
Value Units Test Method / Conditions Mix Ratio 0.02-0.05 %(W) Accelerator : Resin Mix Ratio 0.9 %(W) Hardener : Resin