VA160R/N Air drying varnish
Synthetic air drying anti-flash enamel, with these main properties as follow:
-very quick tack-free
-very good flexibility and bon strength
-excellent compatibility with any types of magnet wires, including those with high thermal class
-good acid and alkali resistance
-excellent electrical properties
-good oil resistance
UL
File E171184-Project 95ME62447 CCN OBOR2 (component)
File E171185-Project 95ME62448 CCN OBJS2 (system)
Physical properties VA160R VA160N
Color red oxide black
Viscosity F/4 at 25℃ 80''~100'' 70''~110''
Flash point (tag closed) 13℃ 13℃
Thinner D100 D100
Track-free time 10’ 10’
Cure 24 hours 24 hours
Thermal class
Twisted pair （ASTM3251） 130℃
Helical coil （ASTM3145） 80℃
Bond strength （ASTMD2519－68）
Helical coil, double reversed dip, 2 hrs at 150℃
Test temperature ℃ 25℃ 100℃
Bond strength Kg 6 3
Electrical properties
Sample preparation and conditioning conform to ASTM standard. Initial cure 2 hrs at 150℃
Dielectric breakdown voltage（ASTM D115） (film thickness：40μm)
As made 4500V
After 24 hours immersion in water 4000V
Volume resistivity （ASTM D257）
As made 1014Ω×cm
After 24 hours immersion in water 1013Ω×cm
Surface resistivity （ASTM D257）
As made 108Ω
After 24 hours immersion in water 108Ω
25℃ 100℃ 180℃
Dielectric constant （1Khz） 1.8 2.1 2.7
Dissipation factor （1Khz） 0.006 0.02 0.16
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