PI-100 Varnish

PI-100 Varnish is a solution of polyimide precursor-polyamic acid. It is coated on substrate and heated up at high temperature to vaporize solvent, accelerate imidization reaction and make non-soluble, non-melting film coating having superior heat resistance, chemical resistance and electric insulation

 

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Polyamic acid structure

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Characteristics of PI-100 Varnish

Item
Unit
PI-100 Varnish
Remark
Solvent
-
NMP
N-Methyl-2-Pyroridon
Solid content
wt%
18.0 ± 1.0
350 °C , 30min.
Density
g/c.c.
1.10~1.11
at 30 °C
Viscosity
Poise
50 ±10
at 30 °C

 

Film properties of PI-100 Varnish (25μm)

PI-100 Varnish coated film has superiority not only in mechanical and electric properties. but also in

wide temperature rage applicability, flammability and abrasion resistance .

 

1. Mechanical properties

Item
Unit
PI-100
Tensile Strength
Kg/mm 2
15
Elongation
%
18.5
Tensile Modulus
Kg/mm 2
285

 

2. Electric Properties

PI-100 Varnish Coated film has superiority in high dielectric constant, high Insulation breakdown

voltage and low dissipation factor,

 

Electric properties of PI-100 coated film (25μm)

Item
Unit
PI-100
Volume resistivity
Ohm.cm
1.3 x 10 16
Breakdown voltage
Kv/mm
600

 

3. Thermal Properties

PI-100 Varnish coated film has no melting point and high thermal decomposition temperature.

PI-100 Varnish particularly has over 500 °C of thermal decomposition temperature, so it does not

soften, fluidize and decompose.

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PI-100 TGA

 

*적용 분야

  • 2FCCL
  • high heat resistance coating Varnish
  • high heat resistance adhesive
  • high heat resistance foam
  • pmp start motor, hermetic motor, traction motors
  • high voltage transformer
  • transformer coil impregnation
  • topcoat on enamel coated wires and motors
  • aircraft wires and cable  
  •