Description
SIDA Mica Tubes represent the pinnacle of high-temperature insulation technology. Formed by precision rolling of calcined mica paper impregnated with specially formulated silicone resin, these rigid tubes undergo controlled thermal curing to achieve outstanding dimensional stability and electrical performance.
Our manufacturing process ensures precise wall thickness control with tolerance accuracy up to ±0.2mm upon request, delivering smooth inner and outer surfaces that facilitate easy assembly and optimal heat transfer. Unlike conventional ceramic tubes, SIDA Mica Tubes offer superior thermal shock resistance, will not crack under rapid temperature cycling, and maintain structural integrity in both continuous operation and overload conditions.
The product line includes Muscovite Mica Tubes (white/amber, max 600°C) for standard applications and Phlogopite Mica Tubes (golden brown, max 1000°C) for extreme heat environments. Both variants exhibit excellent resistance to corona discharge, low water absorption (<0.5%), and minimal smoke emission when heated, meeting stringent environmental and safety requirements.
Technical Data Table
| NINGBO SIDA NEW MATERIAL CO.,LTD. | |||||
| Performance Parameters | |||||
| Product name: Muscovite Mica Tube | |||||
| Item | Unit | Muscovite mica tube | Phlogopite mica tube | Test Procedure | |
| Mica Paper | Muscovite | Phlogopite | |||
| Mica Content | % | ≈85 | ≈85 | IEC 60371-2 | |
| Bond Centent | % | ≈15 | ≈15 | IEC 60371-2 | |
| Density | g/cm3 | 1.6-2.2 | 1.6-2.2 | IEC 60371-2 | |
| Heat Resistance | Continuous Services | ℃ | 500 | 700 | |
| Intermittent Services | ℃ | 800 | 1000 | ||
| Heat Loss at 500℃ | % | ﹤1 | ﹤1 | IEC 60371-2 | |
| Heat Loss at 700℃ | % | ﹤2 | ﹤2 | IEC 60371-2 | |
| Dielectric Strength | kV/mm | ﹥1.5 | ﹥1.5 | IEC 60243-1 | |
| Insulation Resistance at 23℃ | Ω·cm | 1016 | 1016 | IEC 60243-1 | |
| Flame Resistance | UL94 V-0 | UL94 V-0 | UL94 | ||
| NINGBO SIDA NEW MATERIAL CO.,LTD. | |||||
| Performance Parameters | |||||
| Product name: Phlogopite Mica Tube | |||||
| Item | Unit | Muscovite mica tube | Phlogopite mica tube | Test Procedure | |
| Mica Paper | Muscovite | Phlogopite | |||
| Mica Content | % | ≈85 | ≈85 | IEC 60371-2 | |
| Bond Centent | % | ≈15 | ≈15 | IEC 60371-2 | |
| Density | g/cm3 | 1.6-2.2 | 1.6-2.2 | IEC 60371-2 | |
| Heat Resistance | Continuous Services | ℃ | 500 | 700 | |
| Intermittent Services | ℃ | 800 | 1000 | ||
| Heat Loss at 500℃ | % | ﹤1 | ﹤1 | IEC 60371-2 | |
| Heat Loss at 700℃ | % | ﹤2 | ﹤2 | IEC 60371-2 | |
| Dielectric Strength | kV/mm | ﹥1.5 | ﹥1.5 | IEC 60243-1 | |
| Insulation Resistance at 23℃ | Ω·cm | 1016 | 1016 | IEC 60243-1 | |
| Flame Resistance | UL94 V-0 | UL94 V-0 | UL94 | ||
Note:The product specifications provided are for reference purposes only. Please refer to the actual product for final specifications. We also offer various sizes and thicknesses to meet your specific needs. For further customization, please contact us.
Application Scenarios
Industrial Heating Equipment
-
Electric Arc Furnaces: Insulating supports for electrode clamps and current-carrying components
-
Industrial Ovens & Furnaces: Protective sleeves for thermocouples and heating element leads
-
Metallurgy Equipment: Thermal barriers in induction heating coils and ladle heating systems
Home Appliances
-
Hair Dryers & Heat Guns: Heating element insulation and air duct components
-
Irons & Toasters: Mica tube sleeves for heating element terminals
-
Coffee Makers & Kettles: Thermal cutoff device insulation
Electrical & Electronics
-
High-Voltage Motors: Slot liners and phase insulation in H-class motors
-
Power Resistors: Heat-resistant mounting sleeves for wirewound resistors
-
Thermal Fuses: Insulating housings for temperature-sensitive safety devices
Transportation
-
Aircraft De-icing Systems: Insulation for heating elements in wing leading edges
-
Railway Heating: Heating element protection in passenger car HVAC systems
-
EV Battery Thermal Management: High-temp sensor insulation
Testing Standards & Certifications
SIDA Mica Tubes are manufactured in strict compliance with international standards:
-
IEC 60371-1: Specifications for mica-based insulation materials
-
EN 60371-2-1: Methods of test for rigid mica tubes
-
UL 1446: Electrical insulation systems evaluation
-
BS 2757: Thermal classification of insulation materials
-
DIN 7735: Standard shapes and dimensions of mica products
-
ROHS Directive 2011/65/EU: Restriction of hazardous substances
-
REACH Regulation: Chemical safety compliance
Quality Assurance: Each production batch undergoes dielectric testing, dimensional inspection, and thermal aging validation. Certificates of Conformance (COC) and Material Safety Data Sheets (MSDS) are available upon request.
Frequently Asked Questions (FAQs)
Q1: What is the difference between Muscovite and Phlogopite Mica Tubes?
A1: Muscovite tubes (white) offer superior dielectric strength and are ideal for applications up to 600°C. Phlogopite tubes (golden) provide higher temperature resistance up to 1000°C with slightly lower mechanical strength. Choose based on your maximum operating temperature and electrical requirements.
A1: Muscovite tubes (white) offer superior dielectric strength and are ideal for applications up to 600°C. Phlogopite tubes (golden) provide higher temperature resistance up to 1000°C with slightly lower mechanical strength. Choose based on your maximum operating temperature and electrical requirements.
Q2: Can SIDA Mica Tubes be machined to custom dimensions?
A2: Yes. While we offer standard diameters (8-300mm) and lengths (10-1100mm), we can provide precision machining services for tight tolerances (±0.2mm), custom wall thicknesses, and special end finishes. Contact our engineering team for custom specifications.
A2: Yes. While we offer standard diameters (8-300mm) and lengths (10-1100mm), we can provide precision machining services for tight tolerances (±0.2mm), custom wall thicknesses, and special end finishes. Contact our engineering team for custom specifications.
Q3: How do mica tubes compare to ceramic tubes?
A3: Mica tubes provide better thermal shock resistance, lighter weight (density 2.1 vs 3.8 g/cm³), and easier machinability. They also produce minimal smoke and odor when heated, unlike some ceramics. However, ceramics may offer slightly higher compressive strength for extreme mechanical loads.
A3: Mica tubes provide better thermal shock resistance, lighter weight (density 2.1 vs 3.8 g/cm³), and easier machinability. They also produce minimal smoke and odor when heated, unlike some ceramics. However, ceramics may offer slightly higher compressive strength for extreme mechanical loads.
Q4: What is the minimum order quantity (MOQ)?
A4: Standard sizes have no MOQ requirements. Custom dimensions typically require a minimum order of 100-500 pieces depending on size complexity. Sample orders are welcome for testing and qualification.
A4: Standard sizes have no MOQ requirements. Custom dimensions typically require a minimum order of 100-500 pieces depending on size complexity. Sample orders are welcome for testing and qualification.
Q5: How should mica tubes be stored and handled?
A5: Store in original packaging in a dry, clean environment (<70% RH). Avoid mechanical impact and exposure to moisture. Handle with clean gloves to prevent contamination. Shelf life is 24 months when stored properly.
A5: Store in original packaging in a dry, clean environment (<70% RH). Avoid mechanical impact and exposure to moisture. Handle with clean gloves to prevent contamination. Shelf life is 24 months when stored properly.
Q6: Are your mica tubes suitable for vacuum applications?
A6: Yes. Our low-outgassing silicone resin system makes them suitable for vacuum environments up to 10⁻⁶ Torr. For ultra-high vacuum applications, we recommend our specially processed low-volatile grade.
A6: Yes. Our low-outgassing silicone resin system makes them suitable for vacuum environments up to 10⁻⁶ Torr. For ultra-high vacuum applications, we recommend our specially processed low-volatile grade.