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Suzhou Jufeng Electrical Insulation System Co., Ltd.

Epoxy Modified Polyester-Imide Resin manufacturer / supplier in China, offering Jf-9956 H Epoxy Modified Polyester-Imide Resin, Stator Coil, Wind Driven Coil and so on.

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Jf-9956 H Epoxy Modified Polyester-Imide Resin

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Product Description

1. Description
The products is composed of unsaturated polyester imide resin, modified epoxy resin, vinyl active diluents, evocating agent, composite drier, etc. It shall be stored in single component. The product shows good stability in storage. It is featured in high amount of attachment and high honding strength.The product cures under
160 ± 5 with little volatilization during curing. The condensate of the varnish shows excellent electric performance, characteristics of high-frequency resistance, heat resistance, extreme cold resistance as well as mechanical performance. Application of this product is found in varnish submerging treatment for Grade H large transformer, wind power generators and variable-frequency motors.
 
2. Technical parameters of the product
S/N
Names of Properties
Testing Conditions
Unit
Target Values
1
Appearance
Bare eye observation
 
Light brown and yellowish transparent liquid
No mechanical impurity
2
Viscosity
#4 viscosity meter (23±1)
s
5080
3
Gel time
(135±2)
min
515
4
Thick layer curing capability
(135±2)2h
 
Reaching S1.U1.I2.2
5
Moisture absorbing rate
10g Sample
%
≤0.5
6
Bonding strength
(Spiral coil method)
Normal state
N
≥120
7
Electric strength
Normal state
(155±2)
(180±2)
MV/m
≥20
≥18
≥16
8
Volume resistivity
Normal state
(155±2)
(180±2)
after submerged in water for 7 days
Ω·m
≥1×1013
≥1×1012
≥1×108
≥1×1010
9
Medium consumption factor
Normal state
155±2
180±2
%
≤1.0
≤3.0
≤5.0
10
Stability in storage
Mouth sealing method6096h
--
Viscosity shall increase by less than 0.8 times the original value

3   Application process for reference
3.1 Common submerging process
Pre-baking of the workpiece∶90 ~ 100         1h ~ 2h
Varnish submerging∶40 ~ 50          20min~ 30min    
Dripping of varnish∶ Room temperature      ≥1h
Drying∶155 ~ 165        6h ~8h
 
3.2 Vacuum pressuring submerging process
Pre-baking of the workpiece∶  90 ~ 100       2h ~ 3h
Vacuuming of workpiece ∶                     ≤100Pa
Vacuum retaining∶                   ≥0.5h
Varnish feeding∶ workpiece 40 ~ 50    --
Pressurizing∶                   0.4 MPa ~ 0.6MPa
pressure retaining∶                   ≥0.5h
pressure releasing∶                   0.2MPa
Re-varnishing∶                   --
Dripping of varnish∶ Room temperature         ≥1h
Drying∶155 ~ 165      6h ~ 8h
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