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2450 Organic Silicon Glass Varnish Cloth

It is made from electrical alkali-free glass fiber cloth, after impregnating with silicone insulating varnish and drying, silicone glass cloth having a high heat resistance and mechanical properties, dielectric properties, good oil resistance, used for the liner for transformer oil and petrol, the heat-resistant class is H.

1.Thickness:0.11、0.12、0.15、0.17、0.18、0.20、0.25mm;

2.Width: 15, 20, 25mm, can be cut straightly and obliquely(45° angle)or straight cut, Other size can be confirmed by the communication between supplier and buyer.

Organic silicon glass varnish cloth

No. Property Unit Nominal thickness and tolerance
0.10±0.010 0.12±0.012 0.15±0.015 0.18±0.018 0.20±0.020 0.25±0.025
1 Hydrolysis resistance  the varnish film will not be destroyed
2 Influence of glass varnished cloth on oil After 72h in 45 transformer oil on 105±2℃, the acid value is not more than 0.5mg KOH/g
3 Influence of oil on glass varnished cloth After 48h on 105±2℃,  the varnish film will not be destroyed
4 Tensile Strength lengthwise N/10
MmWidth
≥70 ≥90 ≥100 ≥105 ≥110 ≥120
crosswise ≥40 ≥50 ≥60 ≥65 ≥70 ≥80
45° direction ≥40 ≥60 ≥65 ≥65 ≥70 ≥80
Oblique cutlap joint Before Varnishing ≥20 ≥25 ≥30 ≥30 ≥30 ≥35
After Varnishing ≥20 ≥20 ≥20 ≥30 ≥30 ≥30
Extend 10% along 45°direction 2~12 2~12 3~15 3~15 4~16 5~20
5  Elongation%  at breaking Lengthwise ≥1.5 ≥1.5 ≥2.0 ≥2.0 ≥2.5 ≥3.0
direction ≥15 ≥15 ≥15 ≥20 ≥20 ≥20
6 Edge tearing strength (N) Lengthwise ≥5 ≥6 ≥7.5 ≥10 ≥20 ≥20
45° direction ≥50 ≥60 ≥75 ≥80 ≥90 ≥120
7 Breakdown Voltage KV 23±2℃ ≥5.0 ≥6.0 ≥7.0 ≥7.5 ≥8.0 ≥9.0
180±2℃ ≥2.5 ≥2.5 ≥3.0 ≥3.0 ≥3.0 ≥3.5
45° extend 3% ≥3.0 ≥2.5 ≥3.5 ≥3.5 ≥3.5 ≥3.5
On 23±2℃ after humidity ≥2.5 ≥2.2 ≥2.8 ≥2.8 ≥2.8 ≥3.0
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