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Epoxy Mica Paper/glass Fabric Tape
The epoxy mica paper/glass fabric tape(Abbr. as :mica tape) is composed of mica paper as basal material which is affixed with reinforcing material of electrical non-alkali fiberglass fabric on both sides by epoxy varnish as adhesive then to be baked and cut into B-stage strip. It has good flexibility in normal temperature. |
Properties of mica paper tape before being cured
| No. |
Item |
Unit |
Normal value |
|
V5438-1 |
V5440-1 |
|
1 |
flow ability of adhesive |
% |
≥45 |
|
2 |
Gel time |
min |
8～24 or to be negotiated by Buyer and Seller. |
8～18(170±2°C) or to be negotiated by Buyer and Seller. |
|
3 |
Tensile strength |
N/10mm |
≥100 |
|
4 |
Dielectric strength |
MV/m |
≥35 |
|
5 |
Flexibility |
mm |
Negotiated by Buyer and Seller |
Properties of mica paper tape after being cured
| No. |
Item |
Unit |
Normal value |
|
V5438-1 |
V5440-1 |
|
1 |
Flexural strength |
Lengthwise |
At room temperature |
MPa |
≥180 |
≥200 |
|
At elevated temperature |
≥30.0
(130℃) |
≥40.0
（155℃） |
|
Crosswise |
At room temperature |
≥100 |
≥120 |
|
At elevated temperature |
≥20.0
(130℃) |
≥30.0
（155℃） |
|
2 |
Flexural elastic module |
Lengthwise |
MPa |
≥24.0×10³ |
≥40.0×10³ |
|
Crosswise |
≥14.0×10³ |
≥30.0×10³ |
|
3 |
Temperature characteristics of dissipation factor under power frequency |
30℃ |
% |
≤2.0 |
≤2.0 |
|
130℃ |
≤4.0 |
≤4.0 |
|
155℃ |
--- |
≤5.0 |
|
4 |
Density |
g/cm³ |
≥1.6 |
≥1.8 |
|
5 |
Dielectric strength |
MV/m |
≥35 |
≥40 |
Temperature Index
| Type |
Temperature Index |
|
V5438-1 |
≥130 |
|
V5440-1 |
≥155 |
|
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