Enhanced TDS
Identification & Functionality
- Chemical Family
- RTU Product Type
- Technologies
- Product Families
Features & Benefits
- Labeling Claims
- Ready-to-Use Product Features
- Product Features
- Reactive diluent free matrix system with a very long pot life. The reactivity can be adjusted by varying the accelerator content.
- The system has very good high temperature performance after post Cure and exhibits good mechanical and dynamic properties.
Applications & Uses
- Composites Processing Methods
Properties
- Physical Form
- Notes
Gel Time : 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.
Processing Properties :
Typical Cure Cycles 2 h 120 °C + 8 h 180 °C 2 h 120 °C + 8 h 160 °C The optimum Cure Cycle has to be determined case by case, depending on the processing and the economic requirements.
Regulatory & Compliance
- Quality Standards
Technical Details & Test Data
- 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.
- 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 at least 1 day. The impregnation bath should be heated to 35 - 45 °C in order to ensure optimum wetting of fibres. The mandrel should be heated to 60 - 110 °C during the filament winding process. The gelation temperature should not be higher than absolutely necessary. A high gelation temperature induces high shrinkage and generates internal stresses.
- Product Processing Instructions
- Pultrusion
- Pressure Molding
- Filament Winding
- Properties of The Cured, Neat Formulation
Glass Transition Temperature (ISO 11357-2, DSC, 10 K/MIN)
Cure Condition Glass Transition Temperature, TMA [°C] Glass Transition Temperature, DSC [°C] 8 h 120 °C 130 - 136 140 - 146 8 h 120 °C + 8 h 140 °C 160 - 165 165 - 170 2 h 120 °C + 2 h 160 °C 160 - 165 165 - 170 2 h 120 °C + 8 h 160 °C 160 - 165 165 - 175 2 h 120 °C + 2 h 180 °C 165 - 170 165 - 175 2 h 120 °C + 8 h 180 °C 165 - 170 165 - 180 2 h 120 °C + 2 h 160 °C + 2 h 180 °C 165 - 170 175 - 180 Note: Cure temperatures above 130 °C may lead to a brownish colouration of the epoxy system. This does not affect properties.
Tensile Test (ISO 527)
Cure: 2 h 120 °C + 8 h 160 °C
Property Unit Value Tensile strength MPa 45 - 60 Ultimate elongation % 1.5 - 2.5 Tensile modulus MPa 2700 - 3000 Flexural Test (ISO 178)
Cure: 2 h 120 °C + 8 h 160 °C
Property Unit Value Flexural strength MPa 100 - 140 Ultimate elongation % 4 - 7 Flexural modulus MPa 2900 - 3100 Fracture Properties – Bend Notch Test (ISO 13586)
Cure: 2 h 120 °C + 8 h 160 °C
Property Unit Value Fracture toughness K₁c MPa√m 0.6 - 0.75 Fracture energy G₁c J/m² 100 - 125 Water Absorption (ISO 62)
Cure: 2 h 120 °C + 8 h 160 °C
Immersion Condition Unit Value 1 day H₂O at 23 °C % 0.15 - 0.17 10 days H₂O at 23 °C % 0.48 - 0.52 - Properties of The Cured, Reinforced Formulation
Interlaminar Shear Strength (ASTM D 2344)
Short beam test: E-glass unidirectional specimen
Laminate thickness: 3.2 mm
Fibre volume content: 59 - 62%
Cure: 2 h 120 °C + 8 h 160 °CProperty Unit Value Shear strength MPa 69 - 75 Tensile Test – TRANSVERSE STRESS
Test specimens: unidirectionally wound tubes
Material Roving Fibre Volume Content [%] Gelation Temp [°C] Cure Tensile Strength [MPa]
E-glass E-glass roving, 1200 tex, silane finish 66% 100 °C 2 h 120 °C + 8 h 160 °C 63 - 73 Carbon Torayca T 300 B 58% 100 °C 2 h 120 °C + 8 h 160 °C 78 - 85
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® 960 and ACCELERATOR DY 070 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® 906 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.