Calcined Muscovite Mica Tape

Product introduction

Firwo®-CMG Calcined muscovite mica tape for fire-resistant wire & cable, a band-shaped electrical and thermal insulation material, consists of the high quality Pamica® calcined muscovite mica paper bonded to supporting materials of non-alkaline glass fabric, impregnated with high temperature resistant silicone resin.

    Availability


    Width: from 5-1000mm
    Length: 300m, 500m, 1000m(Pad),3000-10000m(Spool)
    Standard cores: 76mm
    (Various specifications available according to customers' requirements)

    FIRWO® Mica Tape for Fire-resistant Wire & Cable


    Products Type Normal Thickness (MM) Total Substance Refractory standard
    FRMICA® FP
    Mica tape
    FP120G16 0.145±0.015 210±15 BS6387-2013 GB/T19216.31-2008 IEC60331
    FP120G28 0.165±0.015 245±15 BS6387-2013 GB/T19216.31-2008 IEC60331
    FIRWO® CMG
    Calcined muscovite mica tape with single side glass fabric
    CM80G32 0.100±0.015 135±10 BS6387-2013 GB/T19216.31-2008 IEC60331
    CM100G32 0.120±0.015 158±10 BS6387-2013 GB/T19216.31-2008 IEC60331
    CM120G32 0.140±0.015 181±12 BS6387-2013 GB/T19216.31-2008 IEC60331
    FIRWO® PG
    Phlogopite mica tape with single side glass fabric
    P80G32 0.100±0.015 125±9 BS6387-2013 GB/T19216.31-2008 IEC60331
    P100G32 0.110±0.015 148±9 BS6387-2013 GB/T19216.31-2008 IEC60331
    P120G32 0.125±0.015 172±11 BS6387-2013 GB/T19216.31-2008 IEC60331
    P160G32 0.140±0.015 216±11 BS6387-2013 GB/T19216.31-2008 IEC60331
    FIRWO® PGD
    Phlogopite mica tape with double sides glass fabric
    P140GD42 0.145±0.02 202±13 BS6387-2013 GB/T19216.31-2008 IEC60331
    P160GD42 0.160±0.02 225±13 BS6387-2013 GB/T19216.31-2008 IEC60331
    FIRWO® PGF
    Phlogopite mica atpe with glass fabric and film backed
    P140GF46 0.145±0.02 203±12 BS6387-2013 GB/T19216.31-2008 IEC60331
    P160GF46 0.160±0.02 226±13 BS6387-2013 GB/T19216.31-2008 IEC60331
    FIRWO® PF
    Phlogopite mica tape with single side PE film
    P120F25 0.120±0.015 158±11 BS6387-2013 GB/T19216.31-2008 IEC60331
    P160F25 0.140±0.015 201±11 BS6387-2013 GB/T19216.31-2008 IEC60331
    FIRWO® SG
    Synthetic mica tape with single side glass fabric
    S80G32 0.100±0.015 125±10 BS6387-2013 GB/T19216.31-2008 IEC60331
    S100G32 0.110±0.015 148±12 BS6387-2013 GB/T19216.31-2008 IEC60331
    S120G32 0.125±0.015 173±12 BS6387-2013 GB/T19216.31-2008 IEC60331
    FIRWO® SGF
    Synthetic mica tape with glass fabric and film backed
    S120GF46 0.130±0.02 181±13 BS6387-2013 GB/T19216.31-2008 IEC60331
    S140GF46 0.145±0.02 203±13 BS6387-2013 GB/T19216.31-2008 IEC60331
    S160GF46 0.160±0.02 226±13 BS6387-2013 GB/T19216.31-2008 IEC60331
    FIRWO® SGD
    Synthetic mica tape with double sides glass fabric
    S140GD42 0.150±0.02 202±13 BS6387-2013 GB/T19216.31-2008 IEC60331
    S160GD42 0.170±0.02 225±13 BS6387-2013 GB/T19216.31-2008 IEC60331
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    Selection of tape width


    Conductor section
    s
    (mm2)
    Conductor diameter
    d
    (mm)
    Width of mica tape (mm) Overlapping ratio (%)
    Theoretical width Thickness (mm)
    T=0.1 (80gsm) 0.12(120gsm) 0.14(140gsm) T=0.1 0.12 0.14
    1.0 1.13 5 5 5 45 44 44
    1.5 1.38 5 5 5 34 33 32
    2.5 1.78 6 6 6 30 30 29
    4 2.26 8 8 8 34 34 33
    6 2.76 10 10 10 36 36 36
    10 3.57 12 12 12 32 32 31
    16 4.51 15 15 15 32 31 31
     Calculation based on recommended taping angle 45° and overlaping 50%. More tape width calculation formula as below:
      d——Conductor diameter (mm)
    t——Tape thickness (mm)
    k——Overlapping ratio (%)
    α——Taping angle (°)
    b——Tape width (mm)

    Smaller taping angle increases the taping efficiency but at expense of conductor wrapping tightness which affects negatively for insulating property and extrusion. Recommended taping angle for lowest friction on tape is 45°(+/-5°).

    Firwo®-CMG calcined muscovite mica tape, special technology manufactured, is an idea solution for all kinds of fire resistant wires & cables. Heating the selected raw mica with high temperature improve the stability of mica tape by removing the water crystallization and impurities which affect negatively the dielectric strength and temperature resistance. Silicone resin content of Firwo®-CM mica tape is 50% more than same of normal tapes. The conductor protection layer, sinter of silicone resin together with mica under high temperature, improves the property of temperature resistance.
    Due to the superior properties of temperature resistance, low fume halogen free and flexibility, Firwo®-CMG mica tape is the preferable solution for marine & shipboard cable, nuclear cable, and other cables with thinner diameter.

    Properties

    ◆ Pass IEC60331 fire resistant standard with single wrapping
    ◆ Pass BS6387CWZ fire resistant standard with double wrapping
    ◆ High speed wrapping up to 70m/min
    ◆ No fabric hairness for coductor wrapping
    ◆ Low fume halogen free
    ◆ 10000 meters continuous efficient wrapping without joint
    ◆ 20% more dielectric strength
     

    Technical Data


    Commodity Calcined muscovite mica tape with single side glass fabric
    FIRWO® -CMG
    Item Code CM80G32 CM100G32 CM120G32
    Thickness(mm) 0.10 ± 0.015 0.12 ± 0.015 0.14 ± 0.015
    Total Substance(g/m2) 135 ± 10 158 ± 10 181 ± 12
    Mica Content(g/m2) 80 ± 3 100 ± 3 120 ± 5
    Glass Content(g/m2) 32 ± 3 32 ± 3 32 ± 3
    Film Content(g/m2) ~ ~ ~
    Bond Content(g/m2) 23 ± 4 26 ± 4 29 ± 4
    Dielectric Strength (kV/layer) > 1.2 > 1.5 > 1.8
    Tensile Strength(N/cm) > 100 > 120 > 120