calcined mica tape

Calcined mica tape is a high-performance insulating material made of calcined muscovite paper and alkali-free glass fiber cloth bonded with silicone resin. The 800-1000℃ calcination process significantly improves its thermal stability and insulation performance.

Product Category:

Mica Tape

Keywords:

Yuefeng Mica

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Description

Commodity name: calcined mica tape

Calcined Mica Tape Product Details

Product Overview

Calcined mica tape is a high-performance insulating and fire-resistant material composed of calcined muscovite mica paper and alkali-free glass fiber cloth bonded with high-temperature silicone resin. The calcination process at 800-1000°C removes volatile impurities, significantly enhancing thermal stability and insulation performance. Compliant with IEC 60331 and BS 6387 international standards, it is suitable for fire-resistant insulation layers in critical applications such as motor cables, new energy vehicles, and rail transit.

Model Classification & Specifications

Model Coding Rules

Model Example	Description	Reinforcement Type	Typical Application
R-5461-CM-GS	Single-sided glass fiber reinforced calcined mica tape	Single-sided glass fiber cloth	Medium-low voltage cable insulation
R-5461-CM-GD	Double-sided glass fiber reinforced calcined mica tape	Double-sided glass fiber cloth	High-voltage motor windings
R-5461-CM-GF	Glass fiber + film reinforced calcined mica tape	Glass fiber cloth + polyester film	Precision electronic component insulation

Key Technical Parameters

Parameter	Unit	Typical Value	Test Standard
Thickness	mm	0.10-0.14	IEC 60371-2
Width Range	mm	4.5-1000	Customizable
Length	m	500/1000/2000	Customizable
Mica Content	g/m²	80-120	IEC 60371-2
Breakdown Voltage	kV/layer	1.2-1.8	GB/T 5019.10-2022
Tensile Strength	N/15mm	＞120	IEC 60371-2
Temperature Resistance	℃	850-900 (90min)	IEC 60331
Dielectric Constant (25℃)	-	3.8-4.2	GB/T 1409
Volume Resistivity	Ω·cm	＞1×10¹⁴	GB/T 1410

Product Advantages

Superior High-Temperature Resistance
Maintains insulation integrity at 850-900℃ for 90 minutes without breakdown, outperforming phlogopite mica tape (800℃) and approaching synthetic mica tape performance at 30% lower cost.

High Mechanical Strength
Glass fiber reinforcement provides tensile strength >120N/15mm, supporting high-speed wrapping (2200rpm) for automated production lines.

Environmental Safety
Asbestos-free and low-smoke emission, RoHS/REACH compliant with no toxic gas release under high temperature.

Flexible Customization
Available in widths from 4.5mm to 1000mm and maximum length of 50000m to meet diverse cable specifications.

Application Scenarios

Industry Sector	Typical Applications	Customer Value Proposition
New Energy Vehicles	Battery pack high-voltage harness insulation	Enhances battery system safety
Rail Transit	Metro tunnel emergency cables	Maintains power supply for 90 minutes during fire incidents
Offshore Platforms	Explosion-proof cable fire-resistant layers	Withstands extreme temperatures and chemical corrosion
High-rise Buildings	Fire elevator/emergency lighting cables	Complies with GB 5135.6 fire safety standards
Nuclear Power Plants	Containment control cables	Tolerates short-term 1000℃ high temperatures

Certifications & Compliance

International Standards: IEC 60331, BS 6387, UL 94 V-0
National Standards: GB/T 5019.10-2022
Environmental Certifications: RoHS 2.0, REACH (197 SVHC compliant)

Mica tape