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Suzhou Jufeng Electrical Insulation System Co., Ltd.

Solvent-Free Submerging Insulating Resin manufacturer / supplier in China, offering Jf-9952 Fire Retardant Solvent-Free Submerging Insulating Resin, Epoxy-Resin Prepreg Nomex Flexible Laminates Nomex with Heat-Resistant Epoxy Resin, Rich Resin Mica Tape and so on.

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Jf-9952 Fire Retardant Solvent-Free Submerging Insulating Resin

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Product Description

1. Description
 The product mainly composed of modified heat resistant unsaturated polyester, fire retardant resin, evocating agent, active diluents, etc.The product is featured in fire retarding, fast curing, strong permeability, long period of storage, good technological adaptability, etc. The product is featured in high bonding strength, high mechanical strength, moisture resistance and mold proof as well as the good compatibility with electromagnetic wires, Nomex paper, pre-submerged materials. It is one kind of Grade H insulating specific for dry-type transformers.
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 meter23±1
S
5070
3
Density
25±2
g/cm3
1.05±0.05
4
Gel time
140±2
min
515
5
Thick layer curing capability
140±22h
--
Reaching S1.U1.I2.2
6
Electric strength
Normal state
155±2
(180±2)
MV/m
≥22
≥20
≥18
7
Volume resistivity
Normal state
after submerged in water for 24h180±2
Ω·m
≥1×1012
≥1×1011
≥1×108
8
Bonding strength
(Spiral coil method)
Normal state
N
≥80
9
Medium consumption factor
Normal state
Thermal state
%
≤1.0
≤3.0
10
Dielectric constant
Normal state
----
≤3.5
11
Fire retardancy
-----
Grade
FH1
12
Stability in storage
60±296h
Times
≤1


3.Application process for reference
3.1 Common submerging process
Pre-baking of the workpiece∶120 ~ 130         2h ~ 3h
Varnish submerging∶40 ~ 50          20min ~ 30min
Dripping of varnish∶ Room temperature       ≥1h
Drying∶155 ~ 165        5h ~ 8h
3.2 Vacuum pressuring submerging process
Pre-baking of the workpiece∶  100 ~ 120       1h ~ 2h
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      5h ~ 8h
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