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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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BERGQUIST microTIM mTIM 1028 is purpose built for riding cage assemblies in servers, switches, and routers, interfacing with electroless nickel plated copper or aluminum heat sinks. It ensures stable operation in high power transceiver modules while also extending applicability to liquid cooling components, heat pipes, and fin based dissipative structures.

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