SynChem – Resins & Varnishes Synthite AC-43 Air drying varnish
Synthite AC-43 is a clear, air drying electrical insulation varnish on basis of modified polyester, suitable for class H.
Synthite AC-43 has the following excellent properties:
- UL-approved
- very fast air drying
- excellent chemical resistance
- solderable
- excellent adhesion
- good penetration
- transformer oil resistance ASTM D 155-55
- corrosion and humidity resistance
Application
Typical applications for Synthite AC-43 are:
- stators
- printed circuit boards
- form wound coils
- resistors
- transformers
- capacitors
Standards
Class H (180 °C) UL-file-no. OBOR2.E317427 and OBJS2.EB17429.
Magnet wire | Twisted pairs | Helical coils |
MW 24-C | 155 °C | 155 °C |
MW 28-C | 130 °C | 130 °C |
MW 35-C | 180 °C | 180 °C |
Delivery forms
Colour: clear
4.5 kg, 22.5 kg and spray bottles on request.
Storage
Synthite AC-43 can be stored at room temperature and in closed containers for up to 36 months (max. 30 °C). The varnish has to be stored in cold, dry places, protected against direct sunlight.
Hardening
Air drying time (on copper plate):
10 min. - set to touch
Baking of 20-30 min. at 150 °C will provide a film with optimum toughness and bond strength.
Protection
Use in well ventilated area, aboid contact with skin and eyes and wear protective clothes. Please observe the safety data sheet.
Processing
Synthite AC-43 may be applied by dipping, brushing or spraying as supplied.
For fast conveyor application, the following cycle is recommended:
1. Preheat units for 10 min. at 110 °C
2. Dip into the varnish for 30 sec.
3. Drain 10-20 min.
4. Bake 60-90 min. at 110 °C
For this type of cycle Synthite AC43 should be diluted 10-15 % with Dolph's® T-200 thinner.
Technical data
Property | Unit of measure | Conditions | Values | Test method |
---|---|---|---|---|
Coating thickness | µm | 75-100 | ASTM D-115-55 |
Property | Unit of measure | Conditions | Value | Test method |
---|---|---|---|---|
Dielectric strength | kV/mm | dry / 0.025 mm film thickness | 80 | ASTM D-115 |
Dielectric strength | kV/mm | after 24h water storage / 0.025 mm film thickness | 48 | |
Creep resistance | CTI | 600 M | IEC 60112 |
Property | Conditions | Blistering | Rusting | Cracking | Test method |
---|---|---|---|---|---|
Resistance | Water | no | no | no | ISO 4628/2-3-4 |
Resistance | 10 % Sulfuric acid | no | no | no | ISO 4628/2-3-4 |
Resistance | 1 % Sodium hydroxide | no | no | no | ISO 4628/2-3-4 |
Resistance | Salt water | no | no | no | ISO 4628/2-3-4 |
Property | Unit of measure | Conditions | Values | Test method |
---|---|---|---|---|
Viscosity | s | 25 °C | 50-70 | ISO Cup 4 |
Viscosity | s | 25 °C | 18-24 | Ford Cup 4 |
Specific density | g/l | 25 °C | 900±30 |