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:
- very fast air drying
- excellent chemical resistance
- excellent adhesion
- good penetration
- transformer oil resistance ASTM D 155-55
- corrosion and humidity resistance
Typical applications for Synthite AC-43 are:
- printed circuit boards
- form wound coils
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|
4.5 kg, 22.5 kg and spray bottles on request.
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.
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.
Use in well ventilated area, aboid contact with skin and eyes and wear protective clothes. Please observe the safety data sheet.
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.
|Property||Unit of measure||Bedingung||Werte||Prüfmethode|
|Coating thickness||µm||75-100||ASTM D-115-55|
|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|
|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|