Epoxy Resin Impregnated Fiberglass Web Banding Tape
Introduction:
"HaiYing" banding tapes consist of parallel
twisted or untwisted E-glass yarns preimpregnated with a special
thermosetting Epoxy resin. The banding tape is pliable and tacky. Its web
structure provides easy unwind without glass trends separation and
overlapping.The product contributes the characteristics of high tensile
strength, high resistance to shocks, high modulus of elasticity, dimensional
stability as well as no magnetically confining and eddy currents losses,
which can be widely used as ideal banding materials for electrical motors,
transformers and lightning arresters.
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Properties:
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Type
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2843-W
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Thermal class
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F
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Volatile content
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≤4%
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Loss of weight at calcination
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27%±2%
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Soluble resin content
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≥90%
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Tensile strength before curing
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≥1500N/cm
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Maximum pull while banding
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1200N/cm
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Specification:
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Thickness (mm)
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Width (mm)
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Length (M/pancake)
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0.17
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10,15,20,25,30 50
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250, 100, 150, 200
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0.3/0.33
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10, 15, 20, 25, 30, 50
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200, 100
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*
Special specification and package are availabe upon request, (such as spool)
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Curing cycles:
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Temperature (℃)
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160
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150
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135
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120
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115
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Time (hour)
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5
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6
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8
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16
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24
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*
The above times do not include the time for the workpiece to reach the curing
temperature.
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Storage stabiliy:
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Storage temperture ℃
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10
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15
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20
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30
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Time (month)
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8
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6
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4
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2
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Application
Instruction of Banding Tape
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Application
1、Banding tape should be
stored in the condition of room temperature. If environment temperature is
above 30℃, 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 applying 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℃ for one hour.
B. Prereheat the banding tape at the temperature 40℃±5℃ 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: 80℃ for 1 hour;
120℃ for 1 hour; 155℃ 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, richer resin
and higher volatile content type tape than normal of ours is suitable for
you.
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