- Contact Person : Mr. shi Nikhi
- Company Name : Jiaxing Rota-Ropa Insulating Material Co., Ltd.
- Tel : 86-573-83188888
- Fax : 0573-83181900
- Address : Zhejiang,Jiaxing,Fengqiao
- Country/Region : China
impregnating varnish of heat resisting polyester R-155
impregnating varnish
1.made from amino resin, polyester resin and xylene etc.
2.used for small and medium type motor winding, transformer, ballast and other apparatus coil.
3. also suitable for hermetic motor.
4.Technical Data
Properties | Unit | Standard Values | |
appearance | Reddish brown liquid, uniform without mechanical impurities | ||
Viscosity, 23, Tu-4# cup | seconds | 35-60 | |
Solids content 105±2, 2 h | % | 46±5 | |
Drying time, 130±2 | min | ≤ 60 | |
Acid number | mgKOH/g | ≤ 10 | |
Flexibility, 150±2, 30h | no crack | ||
Curing in thick layer | Not worse than S1, U1, I4.2 | ||
Dielectric strength | At room temperature | MV/m | ≥80 |
After immersion in water | ≥60 | ||
Volume resistivity | At room temperature | Ω.m | ≥ 1×1012 |
After immersion in water, 24h | ≥ 1×1010 | ||
130±2 | ≥ 1×108 | ||
impregnating varnish of heat resisting polyester R-155
