grade polyvinyl acetal self-adhesive coated round copper magnet wire uses round copper conductor as the wire core and is covered with polyvinyl acetal self-adhesive coating film insulation. It is suitable for various electrical equipment and electronic components.
Insulating Material
The conductor shall be coated with a dual film. The underlying coating
is based on a blend of polyvinyl acetal and phenolic resins .
The superimposed coating is based on resins that are self-bonding in character.
Characteristic
| Adhesion and flexibility | No visible cracks in the coating |
| Elongation | Not less than 5-28 |
| Heat shock | After 175ºC treatment, no visible cracks in the film coating |
| Rebound | 14- AWG 30 Maximum angle per turn: not more than 42-70 Mandrel diameter (mm): not more than 82.6±0.127 – 19.0±0.127 Tension (±2%): not more than 4.45±2% – 0.56±2% |
| Dielectric breakdown | 14-23.5 AWG: not less than 3170v-7720v 24-37 AWG: not less than 2440v-3560v 38-56 AWG: not less than 450v-1650v |
| Continuity | 14-24 AWG:Maximum discontinuities comply with 750±5% – 2500±5% Maximum discontinuities comply with 3-25. |
Regular compliance testing
| Thermoplastic Flow | Median value not less than 180°C |
| Compatibility | No expansion or blistering of thin film coatings |
| Dielectric Breakdown Rating | Average value not less than 75% of required value at room temperature Toluene/Ethanol |
| Combination Adhesion Strength | 18, 26 AWG: Mandrel diameter (mm): not more than 3.99-6.35 Tension/N: not more than 2.0-12.0 |