ARALDITE® MY 740 / HARDENER HY 1102 / ACCELERATOR DY 062

ARALDITE® MY 740 / HARDENER HY 1102 / ACCELERATOR DY 062 is a heat-cure, ready-to-use resin designed for switches and relays applications. It is ideal for bushings, coils, electrical laminates, rods, and tubes. The resin offers excellent aging resistance, good electrical properties, and good mechanical properties, ensuring reliable performance in electrical and electronic components.

RTU Product Type: Impregnating Resin System

Product End Uses: Bushings, Coils, Electrical Laminates, Insulating Tubes, Insulators, Rods, Tubes

Chemical Family: Bisphenol A Type Epoxy

Composites Processing Methods: Impregnation

Features: Excellent Aging Resistance, Good Electrical Properties, Good Mechanical Properties

Cure Method: Heat Cure

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Enhanced TDS

Identification & Functionality

Features & Benefits

Applications & Uses

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

Colour of casting : uncolored

Application Information

Impregnation of high voltage bushings and coils. Manufacture of electrical laminates like tubes, rods, etc.

Properties

Physical Form
Product Data
Property Key Value Unit Test method Condition
Viscosity 10,000 - 14,500 mPa·s   at 25°C
Viscosity 50 - 150 mPa·s   at 25°C
Viscosity 60 - 100 mPa·s   at 60°C
Gel time 390 min Gelnorm at 80/100/120°C
Gel time 90 min Gelnorm at 100°C
Gel time 25 min Gelnorm at 120°C
Time approx. 16 h   at 60°C

Regulatory & Compliance

Quality Standards

Technical Details & Test Data

Product Properties

Liquid, hot-curing impregnation resin system based on Bisphenol A epoxy resin with anhydride hardener. Good mechanical and electrical properties. Good aging resistance and low exothermic reaction.

Properties of Cured Castings

Curing : 4h at 80°C + 8h at 140°C

Property Value Unit Test Method Condition
Glass Transition Temperature 135 - 145 °C ISO 11357-2  
Density 1.12 - 1.16 g/cm³ ISO 1675  
Tensile strength 40 - 50 MPa ISO 527  
Elongation at break 1.50 - 2.00 % ISO 527  
Coefficient of thermal expansion (below Tg) 65 - 70 ppm/K ISO 11359-2 below Tg
Thermal conductivity at 25°C 0.15 - 0.20 W/m·K ISO 8894 at 25°C
Water Absorption (60 min at 100°C) 0.15 - 0.25 % ISO 62 at 100°C
Dissipation factor tan δ at 50 Hz 0.2 - 0.4 % IEC 60250 at 25°C
Dielectric constant εr at 50 Hz 3.1 - 3.3 [-] IEC 60250 at 25°C
Dielectric strength (2 mm test specimen) 22 - 26 kV/mm IEC 60243-1  
Specific volume resistivity at 25°C 10¹⁶ Ω·cm IEC 60093 at 25°C
Electrolytic corrosion A-1 grade IEC 60426