Laminated Mica sheets are made of layers of natural muscovite (or phlogopite) paper glued with silicon (or epoxy) resin and heat-pressed to form flat and uniform rigid or flexible insulation sheets.
Mica sheets are ideal insulation materials for various industrial applications due to their excellent electrical insulation, high thermal stability, flame retardant properties, deformation resistance, and electromagnetic isolation performance.
Types of mica sheets
Muscovite Mica sheet can be used as an electrical insulation component that withstands 700 ℃. When the temperature exceeds this, crystalline water will precipitate from the muscovite mica. Due to its fireproof and heat-resistant properties, it is often used as electrical insulation and in high-temperature refractory materials.
Compared to Muscovite, Phlogopite will keep working stability as an electrical insulation material from 750℃ to 850℃. It is widely used in heating equipment insulation components, industrial furnaces, EV flame retardant flash hiders, new energy, and aerospace industries.
Synthetic mica board is made from artificially manufactured mica. Mica crystals are formed by high-temperature melting and cooling through chemical methods. Synthetic mica insulation sheets can resist temperatures up to 1000 ℃.
Muscovite and phlogopite mica will also have high-temperature stability and flame-retardant properties at high temperatures when crystalline water separates from the mica. For example, some muscovite mica will be used for high-temperature calcination and the precipitate water process to produce calcined mica, which can withstand temperatures of up to 1000℃. So, some muscovite mica sheets have a tighter and more stable structure than phlogopite. When you have an inquiry, please let us know so we can suggest the most suitable solutions.
Flexible Mica Sheets are a popular insulation material. They consist of multiple layers of phlogopite/muscovite mica paper with a high-temperature silicone resin. The sheets are bendable and have high tensile strength, making them ideal for punching insulation gaskets or mats for appliances and furnaces.
Features of flexible mica sheet：
- Flexible and high-tensile strength, most popular thicknesses are 0.5~1.0mm, which will be punched into heating protection mats, washers, and insulation sealing parts.
- Excellent thermal resistance: muscovite mica resists 500~700℃, Phlogopite mica resists 750~850℃, and Synthetic/Muscovite Calcined mica resists more than 1000℃. The most popular phlogopite mica sheets are used in the furnace.
- Excellent electric insulation; typically, the breakdown voltage exceeds 16 kV/mm.
- Different flexible materials can be customized for other uses.
- Customized mica sheet inserts with glass-fiber cloth and stainless steel woven are available for special demand.
- Eco-friendly and non-asbestos.
Flexible mica sheet application：
- The flexible mica sheet can be bent and punched according to the CAD design. The elastic mica sheet mat is very suitable as an insulating mat for equipment such as microwave ovens and toasters.
- The flexible mica sheet can be cut into strips and rolled into the sealing element. The perfect expansion performance ensures that the sealing joint maintains good performance even at high temperatures, such as those in automobile exhaust pipes.
- Flexible phlogopite sheets are resistant to high temperatures above 800°C and are widely used in induction, arc, and high-frequency furnaces. Mica sheets, similar to ceramics, can be combined with other materials to achieve multiple functions and be utilized according to customer needs.
Rigid Mica Sheets, also known as Mica boards or Plates, are made of approximately 90% Muscovite(or Phlogopite) and 10% silicone (or epoxy) resin by heating and pressing. Mica sheets provide excellent high-voltage electrical insulation at high temperatures.
Features of Rigid Mica Sheet：
- Excellent thermal resistance, muscovite mica resists 500~700℃; Phlogopite mica resists 750~850℃; and Synthetic/Muscovite Calcined mica resists more than 1000℃.
- Excellent electric insulation, typically the breakdown voltage is more than 16kV/mm.
- The rigid mica sheet has a tight structure, free from air bubbles or holes, and exhibits high flexural strength, as well as a smooth cutting edge.
- Excellent mechanical strength and a double heating pressing time ensure an extremely high density for over-thick mica boards; it’s suited for sawing, drilling, grinding, laser, and waterjet cutting.
- The mica sheet is distributed evenly, with no impurities, and exhibits a beautiful color and luster.
- A one-time 3D shape formed by a mold tool is available.
- Eco-friendly and non-asbestos.
Rigid mica sheet application:
- Mica board boasts excellent mechanical strength and is well-suited for precision sawing, drilling, and grinding with high-performance tools. It can also be an insulating element for high-temperature and high-pressure equipment.
- Insulation can be used to create heating element cards, gaskets, partitions, or covers, such as those found in hair dryer heating wires and brackets.
- Widely used in heating household appliances, equipment, electric furnaces, motor insulation, transformer power generation and distribution, electric/hybrid vehicles, etc.
- A 3D-shaped mica protective cover can be provided, which can be molded simultaneously through the mold.
Specifications of mica sheet
Name | Type | Thichness | Standard size | Description |
Rigid Mica Sheet | HP5(HP5M, HP5P, HP5S) | 0.1~3mm | 1000*2400mm, 1000*1200mm, 1000*600mm | Excellent flexural strength to punch to mica part for high strength framework of heating, electric heating appliance & equipment |
Flexible Mica Sheet | HP5(HP5M-1, HP5P-1, HP5S-1) | 0.1-6mm | 1000*2400mm, 1000*1200mm, 1000*600mm | Easy to winding or wrapping, for heating elements, furnace protection |
Over thick Mica Sheet | HP5-G (HP5M-G, HP5P-G) | 4-100mm | 1000*2400mm, 1000*1200mm, 1000*600mm | High density, mechanical strength, suitable for sawing, drilling, grinding, and even by waterjet cutting method |
Low Smoke Mica Sheet | HP5-L (HP5M-L, HP5P-L) | 0.1-3mm | 1000*2400mm, 1000*1200mm, 1000*600mm | Low smoke and blister-free for FDA heating elements resist high-temperature, like food toasters, microwave oven |
Mica Sheet in Roll | HP5-R | 0.1-0.5mm | 1000mm*100m | Special designed Flexible Mica Sheet in Roll. That is very convenient for furnace use and industrial demand. |
Special Mica Sheet | HP5-S (HP5M-S, HP5P-S) | 0.5-3mm | 1000*2400mm, 1000*1200mm, 1000*600mm | Insert strength material (steel sheet, woven), get extremely flexible toughness, mechanical strength, the special function for industrial use. |
M – Musvocite), P – Phlogopite, S – Synthetic, L – Low Smook and blister-free, G – High Resin, High Strength
Welcome the customized design and inquiry.
How to make mica sheets?
The laminate mica sheets production steps are as follows:
- Gluing high-quality muscovite mica paper, phlogopite mica paper, or synthetic mica paper with high-temperature silicon resin.
- Cut the glued mica paper to 1020 mm* 2420 mm and 1020 mm* 1220 mm, and stack the glued mica paper to achieve different thicknesses.
- Heating presses the mica paper to the mica sheets, with over 20 years of experience in making high-quality ones.
- The mica sheets were cut to sizes of 1000*600 mm, 1000*1200 mm, and 1000*2400 mm, and then packed in cartons and wooden pallets.
Mica Sheets packing & delivery
Mica sheets are packed in PE film cartons, with each box weighing approximately 50kg.
Then, approximately 20 carton boxes, each containing 1000kg of mica sheets, were fixed on wooden pallets.
(Size: 1200*1000mm or 2400*1000mm) for ocean transport.
Our truck will deliver the products directly to Shenzhen Port, Shanghai Port, and other ports.
Why buy mica sheets from us?
- We have over 20 years of manufacturing experience, control the quality and stability of our goods, and offer competitive prices.
- We are committed to meeting customer requirements, delivering on time, and continuously improving the products and services we manufacture.
- Our advanced manufacturing equipment, combined with a mature and experienced research and development team, enables us to control the production process and product quality fully.
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