Polyester Resin Impregnated Glass Fiber for transformer insulation

Glass Fiber for transformer: 1)Hight tensile strength 2)High modulus elasticity 3)competitive price 4)strong supply

Polyester Resin Impregnated Glass  Fiber Web Banding  Tape(0.3*20 25 30mm)

Specifications: Polyglass Tape(2853-W)

1) Thermal class: H (180°, C)2) Loss of weight at calcination: 26% ± 2%3) Tensile strength before curing: ≥ 1500N/cm4) Thickness (mm): 0.305) Width (mm): 20 25 306) Storage time: 3 12 monthsApplication1,Banding tape should be stored in the condition of room temperature. If environment temperature is above 30degree, the products should be put in the freezer.2,The testing of properties (for example: test volatile content) should be carried within one hour after the banding tape is taken from the plastic bag.3,When apply the banding tape, keep it in the plastic bag at the room temperature for 24 hours after taking out from the freezer.4,During the process of application, uneven tension and unsmooth banding would make the tape separation. You could continue to use after neatening the remaining pancake.

5,Banding process should proceed at the room temperature. Better effect will obtain if the process is put up at the heat condition.

Heat banding process is as follows:A.Preheat the work piece at the temperature 80 degree for one hour.B. Prereheat the banding tape at the temperature 40+/-5 degree for 20 minutes. Preheat can not be over the time to avoid the tape to be cured in advance,. The tape preheated should be used up once. 6,Certain tension should be applied to the banding tape. Tension is less than 1000N/cm for 0.30mm thick tape , The speed is good enough at 10m-15m /min.7, In order to prevent the loosen of the tape, its end should be locked when the banding work finished. Insert the end into inner layer of the tape and press tightly.8,It is recommended to cure the finished banding work piece continuely at several stage: 80degreee for 1 hour; 120degree for 1 hour; 155degree for 3 - 4 hours. It needs 6 hours for tractor motor and industrial large motor ( above-mentioned exclude the time for work piece to reach the curing temperature). 9, If you would treat dry process of varnish dipping and curing of banding tape together, it is necessary to do a trial to make sure that the dry process will not affect the curing of banding tape.10,If you want banding process by hands, the tapes should provide richer resin content and higher volatile content than normal .

     

Polyester Resin Impregnated Glass Fiber for transformer insulation