Applications

Araldite® LY 8615 / Aradur® 8615 / Hardener XB 5173 epoxy system for industrial composites, enabling high-temperature resistant moulds via vacuum-assisted resin transfer molding

  • Item Name: Araldite® LY 8615 / Aradur® 8615 / Hardener XB 5173

  • Manufacturer: Huntsman Advanced Materials

  • Technologies: High-temperature epoxy resin system

  • Color: Resin – Brown liquid; Aradur® 8615 – Clear liquid; Hardener XB 5173 – Pale yellow clear liquid

  • Cure Type: Ambient and heat cure with postcure up to 180 °C

  • Package Size: Contact to Techniq VN for details.

  • Shelf Life: Contact to Techniq VN for details.

1. Product Overview

Araldite® LY 8615 (epoxy resin) combined with Aradur® 8615 or Hardener XB 5173 (amine hardeners) forms a high-temperature epoxy system.

  • Two-component, low-viscosity system.

  • Suitable for vacuum-assisted resin transfer molding (RTM, SCRIMP, VARTM).

  • Can achieve glass transition temperatures >180°C with appropriate post-curing.

  • Offers long pot life and excellent performance in industrial composites.


2. Applications

  • Advanced industrial composite parts

  • High-performance moulds

  • Suitable for vacuum-assisted resin transfer molding (RTM, SCRIMP, VARTM)

3. Typical Properties

A. Before Mixing

Component Appearance Viscosity (25°C, mPa·s) Density (g/cm³) Flash Point (°C) Amine Value (Eq/kg)
Araldite® LY 8615 Brown liquid 1300 – 1700 1.16 – 1.20 >100
Aradur® 8615 Clear liquid 70 – 120 0.93 – 0.95 139 – 142 8.30 – 8.50
Hardener XB 5173 Pale yellow, clear liquid 10 – 40 0.91 – 0.93 108 – 112 10.70 – 11.0

B. After Mixing

Mix Ratios

Resin : Hardener By Weight By Volume
LY 8615 : Aradur® 8615 100 : 50 100 : 65
LY 8615 : XB 5173 100 : 38 100 : 50

Processing Data

Property LY 8615 + Aradur® 8615 LY 8615 + XB 5173
Initial viscosity at 25°C 480 – 580 mPa·s 270 – 370 mPa·s
Pot life at 23°C 850 – 980 min 300 – 400 min
Gel time at 120°C 7 – 11 min 2 – 6 min

C. Mechanical & Thermal Properties (Neat Resin, Post-Cured)

Property LY 8615 + Aradur® 8615 LY 8615 + XB 5173
Tg (DSC, after 180°C postcure) 210 – 220 °C 203 – 210 °C
Tensile strength (ISO 527) 39 – 45 MPa 33 – 45 MPa
Tensile modulus 2650 – 3200 MPa 2880 – 3200 MPa
Elongation at break 1.0 – 2.3 % 1.0 – 2.2 %
Flexural strength (ISO 178) 82 – 97 MPa 113 – 125 MPa
Flexural modulus 2650 – 3280 MPa 2850 – 3280 MPa
Fracture toughness K1C 0.57 – 0.84 MPa√m 0.54 – 0.84 MPa√m
Water absorption (10 days, 23°C) 0.50 – 0.65 % 0.53 – 0.65 %

D. Reinforced Composite Properties (Carbon Fabric Laminate, Post-Cured)

Property LY 8615 + Aradur® 8615 LY 8615 + XB 5173
Interlaminar shear strength 72 – 77 MPa 76 – 81 MPa
Flexural strength 1260 – 1460 MPa 1170 – 1470 MPa
Flexural modulus 113,500 – 133,000 MPa 114,000 – 134,000 MPa
Tensile strength 1360 – 1560 MPa 1520 – 1720 MPa
Tensile modulus 120,500 – 140,000 MPa 129,000 – 149,000 MPa
Ultimate elongation 0.9 – 1.2 % 0.84 – 1.1 %

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