Enhanced TDS
Identification & Functionality
- Chemical Family
- RTU Product Type
- Technologies
- Product Families
Features & Benefits
- Ready-to-Use Product Features
Applications & Uses
- Composites Processing Methods
- Product End Uses
- Processing Methods
Casting, impregnating or vacuum impregnating
- Application Information
Encapsulating or potting of low-voltage and electronic components
Properties
- Physical Form
- Product Data
ARALDITE® MY 740 Unmodified, medium-viscoxity, solvent-free epoxy resin
Property Value Unit Test Method Condition Viscosity (Hoeppler) at 25°C 12,000 mPa·s - at 25°C Specific gravity at 25°C 1.16 g/cm³ - at 25°C Flash point > 200 °C DIN 51 758 - Epoxy content 5.3 Eq/kg - at 80/100/120°C HARDENER HY 2918 Low-viscosity anhydride hardener
Property Value Unit Test Method Condition Viscosity (Hoeppler) at 25°C 65 mPa·s - at 25°C Specific gravity at 25°C 1.2 g/cm³ - at 25°C Flash point > 140 °C DIN 51 758 - ACCELERATOR DY 062 Tertiary amine
Property Value Unit Test Method Condition Viscosity (Hoeppler) at 25°C 65 mPa·s - at 25°C Specific gravity at 25°C 1.2 g/cm³ - at 25°C Flash point > 140 °C DIN 51 758 -
Regulatory & Compliance
- Certifications & Compliance
Technical Details & Test Data
- Product Properties
Condition : Cured for 2 h/80°C+2 h/120°C
Property Value Unit Test Method Condition Shore D hardness (4 mm plate) at 25°C 76 DIN 53 505 at 25°C Glass Transition Temperature 123 °C DIN 51 005 - Tensile strength at 25°C 61 MPa ISO/R 527 at 25°C Max. tensile stress at 25°C 61 MPa ISO/R 527 at 25°C Elongation at break at 25°C 2 % ISO/R 527 at 25°C Elastic modulus from Tensile Test at 25°C 3637 MPa ISO/R 527 at 25°C Water Absorption (10 days at 23°C) 0.28 % by wt. ISO 62 at 23°C Water Absorption (30 min at 100°C) 0.05 % by wt. ISO 62 at 100°C Dielectric constant εr (50 Hz) at 23°C 3.3 [-] DIN 53 483 at 23°C Dielectric constant εr (50 Hz) at 60°C 3.3 [-] DIN 53 483 at 60°C Dielectric constant εr (50 Hz) at 80°C 3.3 [-] DIN 53 483 at 80°C Dielectric constant εr (50 Hz) at 100°C 3.4 [-] DIN 53 483 at 100°C Dissipation factor tan δ (50 Hz) at 23°C 0.1 % DIN 53 483 at 23°C Dissipation factor tan δ (50 Hz) at 60°C 0.1 % DIN 53 483 at 60°C Dissipation factor tan δ (50 Hz) at 80°C 0.1 % DIN 53 483 at 80°C Dissipation factor tan δ (50 Hz) at 100°C 0.3 % DIN 53 483 at 100°C Volume resistivity at 23°C 3 × 10¹⁶ Ω·cm DIN 53 482 at 23°C Volume resistivity at 60°C 2 × 10¹⁶ Ω·cm DIN 53 482 at 60°C Volume resistivity at 80°C 1 × 10¹⁶ Ω·cm DIN 53 482 at 80°C Volume resistivity at 100°C 1 × 10¹⁵ Ω·cm DIN 53 482 at 100°C Electrolytic corrosion A-1 grade DIN 53 489 - Tracking resistance > 600 CTI IEC 112 - Electric strength (20 s for 2 mm plate) at 23°C 19 kV/mm IEC 243 at 23°C - Processing Guidelines
Initial viscosity (Hoeppler) at 25°C 950 mPa·s at 25°C Initial viscosity (Hoeppler) at 60°C 70 mPa·s at 60°C Pot life (Hoeppler) to 1500 mPa·s at 60°C 31/4 h at 60°C Pot life (Hoeppler) to 15,000 mPa·s at 25°C ≥50 h at 25°C Minimum curing time 2/80 + 2/120 h/°C at 80°C + 120°C
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 solventsDisposal of spillage Soak up with sawdust or cotton waste and deposit in
plastic-lined binVentilation of workshop Renew air 3 to 5 times an hour Ventilation of workplaces Exhaust fans. Operatives should avoid inhaling
vapoursFirst 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
Store the components at 18-25°C, in tightly sealed and dry original containers. Under these conditions, the shelf life will correspond to the expiry date stated on the label. Product specific advise regarding storage can be found on product label. After this date, the product December be processed only following reanalysis. Partly emptied containers should be closed tightly immediately after use.