Enhanced TDS
Identification & Functionality
- Chemical Family
- RTU Product Type
- Technologies
- Product Families
Features & Benefits
- Ready-to-Use Product Features
- Features and Benefits
- Low viscosity processing, possibility of high filling
- Long pot-life at 80°C above 120°C by short geltime
- High mechanical and electrical properties
- Good crack resistance
Applications & Uses
- Composites Processing Methods
- Cure Method
- Product End Uses
- System Preparation
General instructions for preparing liquid resin systems.
- Long pot life is desirable in the processing of any casting resin system. Mix all of the components together very thoroughly at room temperature or slightly above and under vacuum. Intensive wetting of the filler is extremely important. Proper mixing will result in:
- Better flow properties and reduced tendency to shrinkage
- Lower internal stresses and therefore improved mechanical properties on object
- Improved partial discharge behaviour in high voltage applications.
- For the mixing of medium to high viscous casting resin systems and for mixing at lower temperatures, we recommend special thin film degassing mixers that may produce additional self-heating of 10-15 K as a result of friction. For low viscous casting resin systems, conventional anchor mixers are usually sufficient.
- In larger plants, two pre-mixers are used to mix the individual components with the respective quantities of fillers and additives under vacuum. Metering pumps then feed these premixes to the final mixer or a continuous mixer. The individual premixes can be stored at elevated temperature (about 60°C) for up to about 1 week, de-pending on formulation. Intermittent agitation during storage is advisable to prevent filler sedimentation.
- Mixing time can vary from 0.5 to 3 hours, depending on mixing temperature, quantity, mixing equipment and the particular application. The required vacuum is 0.5 to 8 mbar. Degassing time is recommended at least 1 hour. The vapour pressure of the individual components should be taken into account.
- In the case of dielectrically highly stressed parts, we recommend checking the quality consistency and pre-drying of the filler. Their moisture content should be <0.2%.
- Processing Information
The effective pot-life of the mix is about 1 to 2 days at temperatures below 25°C. Conventional batch mixers should be cleaned once a week or at the end of work. For longer interruptions of work, the pipes of the mixing and metering installations have to be cooled and cleaned with the resin component to prevent sedimentation and/or undesired viscosity increase. Interruptions over a week-end (approx. 48h) without cleaning are possible if the pipes are cooled at temperatures below 18°C. For data on viscosity increase and gel time at various temperatures, refer to Figs: 4.1 to 4.6, page 4.
Mold temperature
APG process 130 - 160°C
Conventional vacuum casting 80 - 100°CDemoulding times (depending on mould temperature and casting volume)
APG process 10 - 30 min.
Conventional vacuum casting 4 - 8 hCure conditions
APG process 4h at 130°C or 3h at 140°C
Conventional vacuum casting 10h at 140°CTo determine whether crosslinking has been carried to completion and the final proper- ties are optimal, it is necessary to carry out relevant measurements on the actual object or to measure the glass transition temperature. Different gelling and cure cycles in the manufacturing process could lead to a different crosslinking and glass transition temperature respectively.
Processing Viscosities
Fig.4.1: Viscosity increase at 60 and 80°C System A: CY 5936/ HY 5945/ SiO2 (measurements with Rheomat 115) (Shear rate D = 10 s⁻¹)
Fig.4.2: Viscosity increase at 60 and 80°C System B: CY 5948/ HY 5945/ SiO2 (measurements with Rheomat 115) (Shear rate D = 10 s⁻¹)
Fig.4.3: Viscosity increase at 25, 40, 60, 80 and 100°C (measured with Rheomat 115) System A : CY 5936/ HY 5945/ SiO2 (Shear rate D = 10 s⁻¹)
Fig.4.4: Viscosty increase at 25, 40, 60, 80 and 100°C (measured with Rheomat 115) System B : CY 5948/ HY 5945/ SiO2 (Shear rate D = 10 s⁻¹)
Gelation and Cure Times
Fig.4.5: Geltime measured as a function of temperature System A : CY 5936/ HY 5945/ SiO2 (measured with Gelnorm Instrument, ISO 9396)
Fig.4.6: Geltime measured as a function of temperature System B : CY 5948/ HY 5945/ SiO2 (measured with Gelnorm Instrument, ISO 9396)
Mechanical and Physical Properties (System A)
Key Value Unit Test Method Condition Tensile strength 75 - 85 MPa ISO 527 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
Elongation at break 1.2 - 1.4 % ISO 527 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
E-modulus from tensile test 111,500 - 125,000 MPa ISO 527 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
Flexural strength 130 - 140 MPa ISO 178 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
Surface strain 1.2 - 1.4 % ISO 178 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
E-modulus from flexural test 12,000 - 13,000 MPa ISO 178 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
Compressive strength 160 - 170 MPa ISO 604 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
Compression set 13 - 15 % ISO 604 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
Impact strength 10 - 13 kJ/m² ISO 179 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
Critical stress intensity factor (K1C) 3.1 - 3.3 MPa·m¹/² CG 216-0/89 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
Specific energy at break (G1C) 820 - 870 J/m² CG 216-0/89 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
Heat distortion temperature (HDT) 60 - 70 °C ISO 75 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
Glass transition temperature (torsion test) 80 - 90 °C ISO 6721-2 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
Glass transition temperature (DSC) 65 - 75 °C ISO 11357-2 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
Thermal conductivity 1.00 - 1.05 W/mK ISO 8894-1 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
Coefficient of linear thermal expansion 40 - 45·10⁻⁶ K⁻¹ ISO 11359-2 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
Water absorption (specimen: 50x50x4 mm) (Cold water 10 days at 23°C) 0.09 - 0.13 % by wt ISO 62 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
Water absorption (specimen: 50x50x4 mm) (Hot water 60 min at 100°C) 0.15 - 0.24 % by wt ISO 62 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
Density (Filler load 66% by wt.) 1.80 - 1.90 g/cm³ ISO 1183 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
Mechanical and Physical Properties (System B)
Key Value Unit Test Method Condition Tensile strength 80 - 85 MPa ISO 527 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
Elongation at break 1.0 - 1.2 % ISO 527 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
E-modulus from tensile test 12,000 - 13,000 MPa ISO 527 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
Flexural strength 140 - 150 MPa ISO 178 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
Surface strain 1.4 - 1.6 % ISO 178 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
E-modulus from flexural test 13,000 - 14,000 MPa ISO 178 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
Compressive strength 170 - 180 MPa ISO 604 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
Compression set 11 - 13 % ISO 604 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
Impact strength 9 - 12 kJ/m² ISO 179 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
Critical stress intensity factor (K1C) 3.0 - 3.2 MPa·m¹/² CG 216-0/89 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
Specific energy at break (G1C) 650 - 700 J/m² CG 216-0/89 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
Heat distortion temperature (HDT) 70 - 80 °C ISO 75 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
Glass transition temperature (torsion test) 90 - 100 °C ISO 6721-2 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
Glass transition temperature (DSC) 75 - 85 °C ISO 11357-2 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
Thermal conductivity 1.00 - 1.05 W/mK ISO 8894-1 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
Coefficient of linear thermal expansion 35 - 40·10⁻⁶ K⁻¹ ISO 11359-2 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
Water absorption (specimen: 50x50x4 mm) (Cold water 10 days at 23°C) 0.09 - 0.13 % by wt ISO 62 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
Water absorption (specimen: 50x50x4 mm) (Hot water 60 min at 100°C) 0.12 - 0.18 % by wt ISO 62 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
Density (Filler load 66% by wt.) 1.80 - 1.90 g/cm³ ISO 1183 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
Electrical Properties (System A)
Key Value Unit Test Method Condition Breakdown strength (IEC 60243-1) 23 - 25 kV/mm IEC 60243-1 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
Diffusion breakdown strength (DIN/VDE 0441/1) HD 2 N/A DIN/VDE 0441/1 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
Temperature of specimen after test < 23 °C N/A Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
HV arc resistance 189 - 196 sec IEC 61621 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
Tracking resistance (with test solution A) CTI >600M-0.0 N/A IEC 60112 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
Tracking resistance (with test solution B) CTI >600M-0.0 N/A IEC 60112 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
Electrolytic corrosion A1 Grade IEC 60426 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
Electrical Properties (System B)
Key Value Unit Test Method Condition Breakdown strength (IEC 60243-1) 23 - 25 kV/mm IEC 60243-1 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
Diffusion breakdown strength (DIN/VDE 0441/1) HD 2 N/A DIN/VDE 0441/1 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
Temperature of specimen after test < 23 °C N/A Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
HV arc resistance 185 - 205 sec IEC 61621 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
Tracking resistance (with test solution A) CTI >600M-0.0 N/A IEC 60112 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
Tracking resistance (with test solution B) CTI >600M-0.0 N/A IEC 60112 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
Electrolytic corrosion A1 Grade IEC 60426 Determined on standard specimen at 23°C, Cured for: 6h at 80°C + 10h at 140°C
Fig.6.1: Volume resistivity (ρ) as a function of Temperature System A: CY 5936/HY 5945/ SiO2 (measurement voltage: 1000 V/ IEC 60093)
Fig.6.2: Volume resistivity (ρ) as a function of Temperature System B: CY 5948/HY 5945/ SiO2 (measurement voltage: 1000 V/ IEC 60093)
Fig.6.3: Loss factor (tan δ) and dielectric constant (εr) as a function of temperature System A: CY 5936/HY 5945/ SiO2 (measurement frequency: 50 Hz / IEC 60250)
Fig.6.4: Loss factor (tan δ) and dielectric constant (εr) as a function of temperature System B: CY 5948/HY 5945/ SiO2 (measurement frequency: 50 Hz / IEC 60250)
- Application Information
Current- and voltage transformers, epoxy casting resin transformers Indoor-electrical insulators for medium and high voltage
Properties
- Physical Form
Safety & Health
- Handling Precautions
Protective clothing
Yes Gloves Essential Arm protector Recommended when skin contact likely
Goggestery diasses
Yes Respirator/dust mask
Recommended Skin protection before starting work
Apply barrier cream to exposed skin
Skin protection after washing
Apply barrier or nourishing cream
Skin protection 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 solvents
Clean shop requirements
Cover workbenches, etc. with light coloured paper. Use disposable breakers, etc.
Disposal of spillage
Soak up with sawdust or cotton waste and deposit in plastic-lined bin
Ventilation: of workshop
Renew air 3 to 5 times an hour
Ventilation: of workplace
Exhaust fans. Operatives should avoid inhaling vapours.
- First Aid Information
- Contamination of the eyes by resin, hardener or casting 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.
Storage & Handling
- Storage Conditions
Store the components dry at 18-25°C, in tightly sealed original containers. Under these conditions, the shelf life will correspond to the expiry date stated on the label. After this date, the product may be processed only following re-analysis. Partly emptied containers should be closed tightly immediately after use.
Other
- Application Information
Value Units Test Method / Conditions Mix Ratio 3.5 %(W) %(W) Filler : Resin (ARALDITE® CY 5936) Mix Ratio 3.55 %(W) %(W) Filler : Resin (ARALDITE® CY 5948) Mix Ratio 0.8 %(W) %(W) Hardener : Resin (ARALDITE® CY 5936) Mix Ratio 0.83 %(W) %(W) Hardener : Resin (ARALDITE® CY 5948)