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Asphaltum Alkyd Glass Varnish Cloth

It is made from impregnated the electrical alkali-free glass fiber cloth after drying., impregnated material is alkyd.

  1. Thickness: 0.11,0.12,0.13,0.15,0.17,0.18,0.20,0.25,0.38mm.
  2. Width: not less than 1200-1270mm. According to user needs, glass cloth can be straight cutting, obligue cutting (generally along the 45 ℃ angle), the width of bands are15,20,25mm and others. Tolerance of width less than100mm is ± 0.5mm; Tolerance of width more than 100mm is ±1% of the width.

Asphaltum alkyd glass varnish cloth Technical Characteristics

Property Unit Nominal thickness and tolerance
0.10±0.0010 0.12±0.012 0.15±0.015 0.18±0.018 0.20±0.020 0.25±0.025
Oil resistance Breakdown Voltage when temperature no less than 23±2℃
Moisture and heat resistance  The film will not fall off
Bending resistance No cracking, the median of bending part breakdown voltage is not less than 50%  of the flat part.
thermogravimetric % ≤15
Flexibility mm  Agreement between supplier and buyer
 Elongation % ≥12
 

Tensile Strength

 lengthwise N/10mm
Width
≥65 ≥85 ≥105 ≥111 ≥118 ≥131
crosswise ≥45 ≥52 ≥65 ≥7.8 ≥85 ≥98
45°direction ≥40 ≥60 ≥65 ≥6.5 ≥70 ≥80
oblique cutting
lap joint
Before varnishing ≥20 ≥25 ≥30 ≥30 ≥30 ≥30
After varnishing ≥20 ≥20 ≥20 ≥30 ≥30 ≥30
BreakdownVoltage
23±2℃
 Mid    KV ≥5.0 ≥6.0 ≥7.0 ≥8.0 ≥9.0 ≥10.0
Min ≥4.0 ≥4.5 ≥6.0 ≥6.5 ≥7.0 ≥8.0
130±2℃

After Elongation

Mid ≥2.0 ≥3.0 ≥3.0 ≥4.0 ≥4.5 ≥5.0
Min ≥3.0 ≥4.0 ≥4.5 ≥5.0 ≥6.0
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