ARALDITE® CY 179 / ARADUR® 917 / ACCELERATOR DY 070

ARALDITE® CY 179 / ARADUR® 917 / ACCELERATOR DY 070 is a hot-curing epoxy matrix system. ARALDITE® CY 179 is a low-viscosity epoxy resin, ARADUR® 917 is an anhydride hardener, and ACCELERATOR DY 070 is an imidazole accelerator.

RTU Product Type: Resin System (Unspecified)

Product End Uses: Composites, Sleeve Armoring

Chemical Family: Epoxy & Epoxy Derivatives

Composites Processing Methods: Filament Winding, Pressure Molding, Pultrusion

Features: Anhydride-Cured, Dimensional Stability, High Performance, Long Potlife, Low Coefficient of Thermal Expansion, Low Viscosity, Temperature Resistance

Cure Method: Heat Cure

Enhanced TDS

Identification & Functionality

Features & Benefits

Applications & Uses

Application Area
Composites Processing Methods
Cure Method
Product End Uses
Markets
Applications
Applications

High-performance composite parts

Properties

Typical Cure Cycles

1 - 2 h 212°F [100 °C] + 6 h 320°F [160 °C] or 1 - 2 h 212°F [100 °C]+ 4 - 6 h 356°F [180 °C]

The optimum cure cycle has to be determined for each application depending on the processing constraints of the end user.

Technical Details & Test Data

Properties of Cured, Neat Formulation

The values below were obtained with a formulation using 2 pbw Accelerator DY 070

Test/Property Condition/Method Cure Conditions Result
Glass Transition Temperature IEC 1006, DSC, 10 K/MIN 1 h 212°F + 6 h 356°F 180 - 190°C
2 h 248°F + 6 h 320°F 170 - 180°C
TMA, 5 K/MIN, 0.025N 1 h 212°F + 6 h 356°F 190 - 195°C
2 h 248°F + 6 h 320°F 180 - 185°C
Tensile Test ISO 527 1 h 212°F + 6 h 356°F Tensile strength: 6670 - 8410 psi
Elongation at tensile strength: 1.8 - 2.4%
Tensile modulus: 421 - 450 Kpsi
Flexural Test ISO 178 1 h 212°F + 6 h 356°F Flexural strength: 10875 - 33775 psi
Elongation at flexural strength: 2.0 - 3.5%
Ultimate strength: 10875 - 13775 psi
Ultimate elongation: 20.0 - 35.0%
Flexural modulus: 421 - 450 Kpsi
Fracture Properties PM 258-0/90 1 h 212°F + 6 h 356°F Fracture toughness K1C: 528 - 572 psi*in1/2
Fracture energy G1C: 0.37 - 0.43 in-lb/inch²
Water Absorption ISO 62 1 h 212°F + 6 h 356°F 4 days H2O 73°F: 0.30 - 0.35%
10 days H2O 73°F: 0.80 - 1.00%
30 min H2O 212°F: 1.50 - 1.80%
60 min H2O 212°F: 1.80 - 2.20%
Coefficient of Linear Thermal Expansion DIN 53 752 1 h 212°F + 6 h 356°F 33 - 39 x 10⁻⁶/°F
Properties

Extremely low-viscosity, anhydride-cured, reactive-diluent free matrix system with a long pot life. Displays very good temperature resistance after post cure.

Properties of Cured, Reinforced Formulation

Short beam: E-glass unidirectional specimen,
Laminate thickness t = 3.2 mm
Fibre volume content: 60 %
Cure: 1 h 212°F [100 °C]+ 6 h 356°F [180 °C]

Condition

1 h 212°F+6 h 356°F

Unconditioned 9425 - 10150 [psi]
After 1 h in H2O 212°F 8990 - 9715 [psi]

Storage & Handling

Storage Conditions

Araldite® CY 179 should be stored in a dry place, in the sealed original container, away from heat and humidity, at temperatures between +2°C and +40°C (+35.6°F and +104°F). Under these storage conditions, the shelf life is 6 years. The product should not be exposed to direct sunlight.

Aradur® 917 should be stored in a dry place, in the sealed original container, away from heat and humidity, at temperatures between +2°C and +40°C (+35.6°F and +104°F). Under these storage conditions, the shelf life is 2 years. The product should not be exposed to direct sunlight.

Accelerator DY 070 should be stored in a dry place, in the sealed original container, away from heat and humidity, at temperatures between +2°C and +40°C (+35.6°F and +104°F). Under these storage conditions, the shelf life is 3 years. The product should not be exposed to direct sunlight.

Other

Application Information
ValueUnitsTest Method / Conditions
Mix Ratio0.005-0.02 %(W)%(W)Accelerator : Resin
Mix Ratio1.15 %(W)%(W)Hardener : Resin