ARALDITE® LY 8615 / REN® HY 5212

ARALDITE® LY 8615 / REN® HY 5212 is an epoxy resin, formulated amine hardener, used in industrial composites and structural composites.

RTU Product Type: Laminating Resin System

Product End Uses: Wind Mill Blades

Chemical Family: Epoxy & Epoxy Derivatives

Composites Processing Methods: Filament Winding, Laminating, Pressure Molding, Pultrusion, Resin Transfer Molding (RTM)

Cure Method: Heat Cure

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Enhanced TDS

Identification & Functionality

Applications & Uses

Composites Processing Methods
Cure Method
Product End Uses
Markets
Applications
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.

Product Processing Instructions
  • Resin Transfer Moulding (RTM)
  • Pressure Moulding
  • Filament Winding
  • Pultrusion

Properties

Physical Form
Notes

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.

Regulatory & Compliance

Quality Standards

Technical Details & Test Data

Viscosity Build Up

ARALDITE® LY 8615 / REN® HY 5212 - Viscosity Build-up - 1

Properties of The Cured, Neat Formulation

Glass Transition Temperature (ISO 11357-2, DSC, 10 K/MIN)

Cure

Unit

Tg (°C)

90 min 80 °C + 1h 150 °C °C 178 – 182
90 min 80 °C + 1h 150 °C + 1h 180 °C °C 205 – 210
90 min 80 °C + 1h 150 °C + 1h 200 °C °C 205 – 215

Glass Transition Temperature (ISO 6721, DMA, 2 K/MIN)

Cure

Unit

Tg (°C)

24h 40 °C + 2h 120 °C + 2h 160 °C + 2h 180 °C + 2h 200 °C °C 185 – 195

Tensile Test (ISO 527)
Cure: 24h 40 °C + 2h 120 °C + 2h 160 °C + 2h 180 °C + 2h 200 °C

Property

Unit

Value

Tensile strength MPa 80 – 82
Elongation at tensile strength % 3.5 – 3.6
Ultimate strength MPa 78 – 80
Ultimate elongation % 3.5 – 3.6
Tensile modulus MPa 3100 – 3200

Flexural Test (ISO 178)
Cure: 24h 40 °C + 2h 120 °C + 2h 160 °C + 2h 180 °C + 2h 200 °C

Property

Unit

Value

Flexural strength MPa 136 – 140
Elongation at flexural strength % 5.4 – 6.0
Ultimate strength MPa 136 – 140
Ultimate elongation % 5.4 – 6.0
Flexural modulus MPa 3200 – 3300

Fracture Properties – Bend Notch Test (ISO 13586)
Cure: 24h 40 °C + 2h 120 °C + 2h 160 °C + 2h 180 °C + 2h 200 °C

Property

Unit

Value

Fracture toughness K₁C MPa√m 0.60 – 0.61
Fracture energy G₁C J/m² 128 – 132
Properties of The Cured, Reinforced Formulation

Short beam: Laminate comprising 12 layers unidirectional E-glass fabric (425 g/m²)
Laminate thickness t = 3.1 - 3.3 mm
Fibre volume content: 63 - 65 %

Interlaminar Shear Strength (ASTM D 2344)
Cure: 24h 40°C + 2h 120°C + 2h 160°C + 2h 180°C + 2h 200°C

Property Unit Value
Shear strength MPa 65 – 67

Flexural Test – Parallel (ISO 178)
Cure: 24h 40°C + 2h 120°C + 2h 160°C + 2h 180°C + 2h 200°C

Property Unit Value
Flexural strength MPa 1200 – 1250
Ultimate strength MPa 1150 – 1200
Ultimate elongation % 2.5 – 2.7
Flexural modulus MPa 46000 – 46500

Flexural Test – Perpendicular (ISO 178)
Cure: 24h 40°C + 2h 120°C + 2h 160°C + 2h 180°C + 2h 200°C

Property Unit Value
Flexural strength MPa 142 – 148
Ultimate strength MPa 135 – 140
Ultimate elongation % 1.2 – 1.3
Flexural modulus MPa 21000 – 22000

Short beam: Laminate comprising 12 layers Carbon fabric G1157 (290 g/m2)
Laminate thickness t = 3.0 mm
Fibre volume content: 63 - 65 %

Interlaminar Shear Strength (ASTM D 2344)
Cure: 24h 40°C + 2h 120°C + 2h 160°C + 2h 180°C + 2h 200°C

Property Unit Value
Shear strength MPa 80 – 83

Flexural Test – Parallel (ISO 178)
Cure: 24h 40°C + 2h 120°C + 2h 160°C + 2h 180°C + 2h 200°C

Property Unit Value
Flexural strength MPa 1550 - 1700
Ultimate strength MPa 1500 - 1650
Ultimate elongation % 1.1 - 1.3
Flexural modulus MPa

135000 – 137000

Flexural Test – Perpendicular (ISO 178)
Cure: 24h 40°C + 2h 120°C + 2h 160°C + 2h 180°C + 2h 200°C

Property Unit Value
Flexural strength MPa 67 – 70
Ultimate strength MPa 63 – 66
Ultimate elongation % 0.6 – 0.7
Flexural modulus MPa 10000 – 11000

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 solvents
Disposal of spillage Soak up with sawdust or cotton waste and deposit in
plastic-lined bin
Ventilation of workshop Renew air 3 to 5 times an hour
Ventilation of workplaces Exhaust fans. Operatives should avoid inhaling
vapours

First 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 8615 or Ren® HY 5212 are stored in a dry place in their original, properly closed containers at the storage temperatures mentioned in the MSDS they will have the shelf lives indicated on the labels. Partly emptied containers should be closed immediately after use.