The FRMG mica tape is a composite of mica paper
(phlogopite or synthetic mica) and glass cloth. The tape is reinforced by glass cloth on one side and bound
together with the organosilicon binder of high thermal resistance. The high
mica content (over 70%) of this tape make it a good fire resistant insulation.
It is mainly used as an insulation layer for the fire resistant cables with
plastic sheath.
Ⅰ Type
and Flame Resistance
|
Type
|
Mica paper
|
Flame Resistance
|
|
FRMP-G
|
Phlogopite
|
B (750~800oC, 90min)
|
|
FRMS-G
|
Synthetic mica
|
A (950~1000oC, 90min)
|
Ⅱ Composition and Thickness
|
Material
|
Thickness (mm)
|
Weight approx
|
Note
|
|
Glass Cloth
|
0.04
|
30
|
On one side
|
|
Adhesive
|
_____
|
13~20
|
Organosilicon resin
|
|
Mica paper
|
0.075~0.12
|
115~160
|
Phlogopite or synthetic mica
|
Ⅲ Main Properties
|
No.
|
Items
|
Unit
|
Properties
|
Test method
|
|
1
|
Thickness
|
mm
|
0.11
|
0.13
|
0.15
|
0.18
|
IEC371-2
|
|
2
|
Thickness Tolerance
|
g/ m2
|
±0.02
|
IEC371-2
|
|
3
|
Weight approx.
|
g/ m2
|
160±20
|
185±20
|
200±20
|
220±20
|
IEC371-2
|
|
4
|
Mica content
|
g/ m2
|
115
|
135
|
155
|
170
|
IEC371-2
|
|
5
|
Glass content
|
g/ m2
|
30±2
|
IEC371-2
|
|
6
|
Binder content
|
%
|
10±3
|
IEC371-2
|
|
7
|
Volatile content
|
%
|
<0.8
|
IEC371-2
|
|
8
|
Tensile strength
|
N/cm
|
≥100
|
IEC371-2
|
|
9
|
Dielectric strength
|
Average
|
KV/mm
|
13~18
|
IEC243
|
|
Minimum
|
10
|
|
10
|
Volume resistance
|
Ώ.cm
|
1x106
|
IEC93
|
|
11
|
Width
|
mm
|
≥6±0.5
|
|
|
12
|
Length
|
m
|
300~1000+10
|
|
|
13
|
Bonding property
|
The mica foil will not be separated.
|
|
14
|
Rewinding property
|
Any false adhesion will not occur.
|
|
|
|
|
|
|
|
|
|
|
Ⅳ Packing
1. The mica tape is wound on a paper core. (the diameter of
core is a customer’s option).
2. The tape is sealed with a plastic bag and packed in a
carton box.
3. The name, type, quantity and date of product are marked
clearly on the box.
Note:
This mica tape is wound on the paper core with mica paper
outside and the mica paper should be inside during the rewinding process for
copper conductor (with PE film outside).