|
1.General Information
This weftless tape is a kind of semi-curing reticulate material,which
is composed of alkali-free glass fiber impregnated modified epoxy
resin (or polyester resin),it appears reticulation when it's pulled
apart laterally.
It has high impact resistance,high modules ,low stretching,no magnetic
hysteresis, no trickle loss.Heat resistance classification is F.
It's suitable for motor stators,transformer core ,large-scale motor
and generators,electric appliances etc.
2.Technical Requirement
2.1 Dimension
Item
|
Unit
|
Value |
| Thickness |
mm |
0.3±0.03 |
| Width and tolerance |
mm |
10±1,25±2,30±2 |
| Length for each roll |
m |
100,125,150,200 |
2.2 Property Index
|
No.
|
Index
|
Unit
|
Value
|
|
2841-W
|
2843-W
|
|
1
|
volatile |
%
|
≤5.0 |
|
2
|
Resin content |
%
|
25±4 |
|
3
|
Soluble resin content |
%
|
≥90 |
|
4
|
Curing property |
|
Easy to be peeled off ,not adhesion |
|
5
|
Tensile strength before curing |
N/10mm
|
≥1.0×103 |
|
6
|
Tensile
strength of
annular
sample |
Room temp. |
MPa
|
≥ 9×1012 |
| Thermal state |
≥ 5.6×102 |
|
8
|
Elongation at break of annular sample |
%
|
≤4 |
|
9
|
Tensile elastic modulus for annular
sample |
MPa
|
≥4.5×104 |
|
10
|
Temperature index for long-term heat
resistance |
℃
|
≥155 |
3.Storage life
|
Storage temperature℃
|
≤5
|
6-10
|
11-15
|
16-20
|
21-25
|
26-30
|
|
Storage time
|
12
|
8
|
6
|
4
|
3
|
2
|
|
