P1641-W water soluble silicon steel plate Varnish
1.lntroduction
  This kind of varnish is mixed up by soluble metlbond resin ,coupling agent and water.It is F grade insulating material.it can be quick dry under high temperature (300-350C) and forms a stable,heat resistant and oil resietant film on the surface of silicon steel plate .It has no harmful gas volatilized and no hurt for operator.It can be applied for insulation between silicon steel plate within B,f grade motor and electric appliance equipment.

2.Technical requirements:
No. Index name
Unit
 Index value
1
Appearance
Paint liquid solve uniformly,not muddy, no mechanical impurity,paint film is flat and smooth
2
 Viscosity(#4cup,23±2℃)
S
 30-120
3
 Solid content(130±2℃)
%
 50±3
4
 Curing time（300±2℃）
min
 ≤2
5
 Volume resisitivity
Ω.m
 ≥1×106
≥1×1013
6
 Withstand voltage D.C6V
Not breakdown
7
 Adhesive force
class
 1

3.Storage period is 6 months

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