A Mica tube is a tubular product made of mica material. It is usually made of high-quality muscovite or phlogopite mica paper bonded with silicon resin. Compared with traditional ceramic tubes, mica tubes have the advantages of sound insulation, high strength, high precision, high-temperature resistance, non-fragility, and small dimensional tolerance.
Mica tubes are mainly used in power equipment and electrical insulation materials, and can be used as protective layers for wires, cables, and insulators. Its excellent insulation performance and high-temperature resistance can effectively isolate current and prevent unsafe events such as arcs, leakage, and fire. At the same time, mica tubes can also be used to manufacture high-temperature furnaces and heating elements in the glass industry, which has significant application value.
HighMica supplies quality mica tubing; contact us today for a free quote.
Custom process steps
The mica tube customized processes generally include the following steps:
1. Confirm specifications
Customers need to provide detailed specifications such as length, inner diameter, outer diameter, thickness, and material of mica tubes.
2. Material selection
Select the suitable mica material according to the customer’s requirements and application. Usually, we need to send you the temperature resistance demand. We will suggest muscovite mica and phlogopite mica.
3. Glue mica paper
After confirming the mica tube size and material, our mica sheet glue machine will make the glued mica paper. The mica paper width is 1010mm, and the regular mica tube length is 1m.
4. Mica Tube Mold
The mica tubes are made on the mold; the mold’s outer diameter fits the mica tube’s inner diameter. We have a stock of different sizes of molds. When you have a new demand, please tell us, and we will check the stock, then offer the price and the finishing time
5. Make Mica Tube & Bake
Roll the glued mica paper on the tube mold tightly, and knead the mica tube to the tight structure. Then, pull out the mold from the mica tube and put the mica tube back in the oven.
6. Quality Inspection & Packing
Inspect the mica tubes’ quality, including testing of appearance quality, dimensional accuracy, bending strength, and other indicators. Then, the mica tube will be packed safely for transportation.
Our custom mica tube types
Mica tube technique data
| Name | Unit | Muscovite Mica Tube | Phlogopite Mica Tube |
|---|---|---|---|
| Water absorption | % | ≤1 | ≤1 |
| Mechanical strength | Mpa | ≥10 | ≥10 |
| Dielectric strength | KV/mm | ≥10 | ≥10 |
| Density | g/cm^3 | 1.6~1.9 | 1.6~1.9 |
| Adhesive content | % | 10 | 10 |
| Mica content | % | 90 | 90 |
| Heat resistance continuous operation | ℃ | 500 | 750 |
| Heat resistance intermittent operation | ℃ | 750 | 1000 |
| Burning Test | / | Burning to temperature 750 ℃, Smokeless or seldom. Appearance keeps well. | |
| Appearance | / | The mica tube distributed evenly, with no impurity, grease spot, not clicked, color and luster is beautiful, etc. | |
| Flame resistance | / | UL94V-0 | UL94V-0 |
The mica tube parameter meets the GB/T 5019.5-2014 standard request.
Features
Mica tubes are made of muscovite mica or phlogopite, which can resist high temperatures and high voltage. The mica tubes have the following features:
1. High-temperature resistance
Mica tubes can be used in high-temperature environments, can resist temperatures as high as 1000 ℃, and are suitable for insulation and heat insulation of high-temperature equipment.
2. Corrosion resistance
Mica tube has strong corrosion resistance, can resist the erosion of acid, alkali, salt, and other corrosive media, and maintains its stable performance.
3. Electrical insulation properties
Mica tubes have good electrical insulation properties and can be used as insulating materials for electrical equipment to protect it from electrical shock.
4. Heat insulation performance
Mica tubes have good heat insulation performance, can prevent heat conduction, and are widely used in high-temperature equipment for heat insulation layers.
5. Low thermal expansion
The thermal expansion coefficient of the mica tube is low, which can keep the shape stable when the temperature changes, and it is not easy to deform or crack.
6. Good mechanical strength
The mica tube has good mechanical strength and can be processed. Mica tubes can be cut to different lengths, drilled with holes, or shaped. When you have a unique design demand, please send us the design file; we can process it according to your customized demand.