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Suzhou Jufeng Electrical Insulation System Co., Ltd.

Jf310s-1 Fast-Dry Varnish manufacturer / supplier in China, offering Jf310s-1 Fast-Dry Varnish, Epoxy-Resin Prepreg Nomex Flexible Laminates Nomex with Heat-Resistant Epoxy Resin, Rich Resin Mica Tape and so on.

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Jf310s-1 Fast-Dry Varnish

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Product Description
1.Description
JF310S-1 is composed of vegetable oil acid, polyhydric alcohol, modified polyester resin, etc. This varnish is featured in fine insulating property, grease resistance,moisture resistance, rust prevention and corrosion resistance from chemical gases, able to be both naturally dried and baking dried. Better performance is shown after baking dried. Application of this varnish is found in varnish submerging treatment for coils in Grade B middle/small transformers and motors. 
2.  Technical parameters of the product
S/N
Names of Properties
Testing Conditions
Unit
Target Values
1
Appearance
Bare eye observation
--
 Brown viscous liquid,
No mechanical impurity
2
Viscosity
#4 viscosity meter(23±1)
s
1540
3
Solids content
1052h
%
≥40
4
Time for drying
dry,(25±2)
h
≤4
Overall dry,25±2
≤24
   Drying,60±2
≤2
5
Electric strength
Normal state
MV/m
≥60
After submerged in water for 24h
≥30
6
Volume resistivity
Normal state
Ω·m
≥1×1012
After submerged in water for 24h
≥1×1010
7
Storage period
Room temperature, Sealedavoid light
Month
12
 

3. Application process for reference                                        
Pre-baking of the workpiece∶100 ~ 110      1 h~ 2h                   
Varnish submerging∶40 ~ 50        10min ~ 20min
Dripping of varnish∶ Room temperature   ≥1h                    
Air dry∶ Room temperature 24 h
Drying∶60 ~ 80        1.5 h~ 2 h
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