Varnish for vehicle motors (development article）
YE-7309, YE-5331, and YY-7513 are varnishes developed for the EV motors of vehicles. They are high-Tg, low-VOC solventless (no organic solvent used) varnishes with excellent ATF resistance.
Product name
Varnish for vehicle motor (Development articles: YE-7309, YE-7940, and YY-7513 development articles)
Characteristics
- Excellent ATF resistance
- Low-odor, low-VOC solventless varnish with little loss
- High Tg
Application example
- For coil impregnation of vehicle EV motor
General characteristics
| Item | Condition | Unit | Measured value | ||
| YE-7309 | YE-7940 | YY-7513 | |||
|---|---|---|---|---|---|
| Composition | ― | ― | Modified epoxy | Modified epoxy | Heat-resistant polyester |
| Heat resistance category |
― | ― | H | H | H |
| Appearance | Visual | ― | Light yellow, transparent |
Light yellow, transparent |
Brown, transparent |
| Viscosity | 25℃/B Type | mPa・s | 38 | 46 | 1000 |
| Specific gravity | 25℃/set to touch | ― | 1.08 | 1.10 | ― |
| Gel time | 120℃ | min"sec | 4'24" | 4’16” | ― |
| Pot life | 40℃ | Day | 40 | 20 | 60 |
| Standard cure condition |
― | ℃/h | 130 x 0.5 | 150 x 0.5 | 155 x 0.2 |
| Hardener | ― | Recommended item no. | V068-00 | YZ-4936 | YZ-6916 |
| Standard formulation |
― | phr | YE-7309/V068-00 ＝100/1 |
YE-7940/YZ-4936 ＝100/1 |
YY-7513/YZ-6916 ＝100/1 |
| Volume resistivity |
Normal state | Ω・cm | 1×1016 | 1×1017 | ― |
| After submergence | 8×1012 | ― | ― | ||
| Characteristics | High TG, low viscosity, rust resistance |
High TG, low viscosity |
Low VOC (0.5% 60φ 5ｇ) |
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