Add：No.88 zhangcao road, zhangyan town, jinshan district, Shanghai
Zip：201201
Tel：021-57213564
Fax：021-57220149
E-mail：webmaster@sh-qianfeng.com
This varnish resulted from the polycondensation of pyromellitic dianhydride with 4.4'-diaminodiphenyl ether in polar solvent has excellent electric property and mechanical strength, good temperature-resistance, solvent-resistance, radiation-resistance,chemical stability and non-inflammability, C grading heat-resistance, suitable for copper and aluminium sire varnishing used at high temperature.
| Item No | Specifications | Unit | Technical Index | |
| 1 | Appearance | —— | yellow brown clear liquid no impurities | |
| 2 | Solid content，250℃±5℃ 1h | % | 12 | |
| 3 | Viscosity，4#viscosimeter，20±1℃ | min | 3-5 | |
| 4 | Dielectric intensity | Normal | MV/m | ≥100 |
| 200±3℃ | ≥60 | |||
| 5 | Volume resistivity | Normal | Ω.m | ≥1.0×1013 |
| 200±3℃ | ≥1.0×1010 | |||
