Mica Laminate

Description

SIDA Mica Laminates represent the pinnacle of mineral-based insulation technology, engineered for applications demanding uncompromising thermal stability and electrical performance. Our laminates are produced through a sophisticated hot-pressing process that bonds premium muscovite or phlogopite mica paper with high-temperature silicone resin, creating a dense, homogeneous structure with outstanding physical properties.

Key Performance Advantages

1. Exceptional Thermal Endurance

Continuous operating temperature: 500°C–700°C
Intermittent peak temperature: Up to 1000°C
UL94 V-0 fire resistance classification
Minimal heat loss (<1% at 500°C, <2% at 700°C)

2. Superior Electrical Insulation

Dielectric strength: >20 kV/mm at 23°C
Volume resistivity: 10¹⁴–10¹⁵ Ω·cm
Maintains insulation properties even at elevated temperatures

3. Robust Mechanical Properties

Cross-breaking strength: 1,550 kg/cm²
Excellent flexural strength and hardness (Shore D 85-90)
High compressive strength suitable for pressure applications

4. Chemical & Environmental Stability

Excellent resistance to acids, alkalis, and oils
Water absorption: <0.5% after 24h immersion
No toxic emissions or asbestos content
Low smoke and odor during heating

5. Precision Processability Our mica laminates can be fabricated into complex geometries through:

Die-stamping (0.1–2.0mm thickness)
CNC cutting, drilling, grinding, milling (2.0–100mm)
Water jet cutting for intricate shapes
Hot-forming for customized three-dimensional parts

Technical Data Table

NINGBO SIDA NEW MATERIAL CO.,LTD.
Performance Parameters
Product name: Mica Laminate
Type		PB5662	PB5662-W	PB5662-H	PJ5662	PJ5662-W	PJ5662-H	Test Standard
Type		(Muscovite Mica)	PB5662-W	PB5662-H	(Phlogopite Mica)	PJ5662-W	PJ5662-H	Test Standard
Type		506 Muscovite	506 Muscovite without smoke	506 High Strength Muscovite	506 Phlogopite	506 Phlogopite without smoke	506 High Strength Phlogopite
Mica content %		≥90	≥92	≥88	≥90	≥92	≥88	IEC60371
Bond content %		≤ 10	≤8	≤ 12	≤ 10	≤8	≤ 12	IEC60371
Density g/cm³		1.7-2.25	1.7-2.25	1.7-2.35	1.7-2.25	1.7-2.25	1.7-2.35	IEC60371
Temperature Resistance	Continuous	500	500	500	700	700	700	IEC60371-2
Temperature Resistance	Intermittent	800	800	800	1000	1000	1000	——
Thermal Weight Loss	at 500 ℃ %	≤ 1	≤ 1	≤2	≤ 1	≤ 1	≤2	IEC60371
Heat loss	at 700 ℃ %	≤ 1.5	≤ 1.5	≤ 3	≤2	≤ 1.5	≤ 3	IEC60371
Flexural strength N/mm²		≥ 160	≥ 120	≥ 180	≥ 140	≥ 100	≥ 160	GB/T5019
Water absorption 24h/23℃ %		≤ 1	≤2	≤0.5	≤ 1.5	≤2.5	≤ 1	GB/T5019
Dielectric strength Kv/mm		≥20	≥ 18	≥20	≥20	≥ 18	≥20	IEC60243
Volume resistivity	23℃	>1017	>1017	>1017	>1017	>1017	>1017	IEC6093
Volume resistivity	500℃	>1012	>1012	>1012	>1017	>1012	>1012	IEC6093
Thermal conductivity(W/m.K)		0.23	0.23	0.23	0.23	0.23	0.23	ASTM D5470-17
Temperature resistance Class		94V-0	94V-0	94V-0	94V-0	94V-0	94V-0	UL
Remark: The technical data of PB5662-G is the same as PB5662

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

1. Home Appliance Industry

Microwave Ovens: Waveguide covers, thermal barriers
Hair Dryers & Heaters: Heating element supports, mica washers for thermal switches
Induction Cooktops: Coil insulation, thermal management
Coffee Makers: Thermal insulation barriers

2. Electromagnetic Systems

Electro-magnets: Insulating spacers, coil formers
Transformers: High-temperature barrier insulation
Electric Motors: Commutator V-rings, slot wedges, end-plate insulation
Solenoids: Coil encapsulation, thermal barriers

3. Industrial Furnaces & Foundry Equipment

Coreless Induction Furnaces: Slip plane protection between coil grout and refractory lining
Line & Medium Frequency Furnaces: Thermal insulation layers
Arc Furnaces: High-temperature gaskets and seals
Heat Treatment Equipment: Thermal barriers and electrical insulation

4. Automotive & Transportation

EV Battery Packs: Thermal runaway protection barriers
Exhaust Gas Sensors: High-temperature insulation washers
Electric Motors: Insulation components for traction motors
Charging Systems: Electrical isolation components

5. Micro-Sensitive Control Gear

Precision Instruments: Thermal-stable mounting pads
Control Valves: Electrical isolation washers
Sensing Equipment: Dielectric spacers
Switchgear: Arc barrier components

6. Military & Aerospace

Aircraft Electrical Systems: Fire-resistant insulation
Radar Equipment: High-frequency electrical insulation
Satellite Components: Outgassing-stable thermal insulation

Frequently Asked Questions (FAQs)

Q1: What is the difference between muscovite and phlogopite mica laminates?

A: Muscovite (clear/amber) operates continuously at 500°C with higher dielectric strength, while phlogopite (brown/gold) withstands continuous 700°C and offers better moisture resistance. Both achieve 1000°C intermittent peaks. We recommend muscovite for electrical applications and phlogopite for extreme thermal environments.

Q2: Can SIDA mica laminates be machined to custom shapes?

A: Absolutely. We provide precision die-stamping for 0.1–2.0mm thicknesses and CNC cutting, drilling, grinding, and milling for parts up to 100mm thick. Simply provide your CAD drawings (.dwg, .dxf, .step) and our engineering team will verify manufacturability within 24 hours.

Q3: Are your mica products compliant with environmental regulations?

A: Yes. All SIDA mica laminates are asbestos-free, RoHS 3.0 compliant, REACH registered, and UL-certified (File E332023). They produce minimal smoke (<1% opacity) and no toxic gases when heated, meeting IEC 60707 requirements.

Q4: What is the typical lead time for custom-cut mica washers?

A: Standard stocked sheets ship within 3–5 business days. Custom die-stamped washers and cut parts: 10–15 days for prototypes, 15–25 days for production quantities. Urgent expediting available upon request.

Q5: How do mica laminates compare to ceramic or polyimide insulation?

A: Mica offers superior thermal shock resistance (no cracking like ceramics) and maintains mechanical flexibility. Compared to polyimide (Kapton), mica provides 3-5x higher temperature capability and better voltage endurance at elevated temperatures, though polyimide offers thinner profiles (<0.05mm).

Q6: What testing certificates are provided?

A: Each batch includes a Certificate of Conformance (CoC) with dielectric strength, dimensional, and thermal test data. Additional certifications available: UL Yellow Card, RoHS compliance report, REACH SVHC declaration, and IEC test reports (additional fees may apply).

Testing Standards & Certifications

SIDA Mica Laminates are manufactured and tested to comply with the following international standards:

NEMA LD3-2005: Standard for high-pressure decorative laminates
IEC 371-2: Specification for mica paper-based insulation materials
IEC 60243-1: Dielectric strength testing methods
IEC 60093: Volume resistivity measurement
UL94: Flammability rating (V-0 achieved)
ASTM D229: Structural quality tests
RoHS 3.0 (2015/863/EU): Restriction of hazardous substances
REACH Regulation (EC 1907/2006): Chemical safety compliance
UL File E332023: Component recognition for electrical insulation

Quality Control Process

Incoming Inspection: Mica paper resin content and purity verification
In-Process Control: Press temperature, pressure, and dwell time monitoring
Final Testing: 100% dielectric spot-check on all production batches
Dimensional Verification: Laser measurement of thickness and flatness
Third-Party Audit: Annual UL factory inspection and biennial ISO 9001 surveillance

Custom Fabrication Services

SIDA offers complete in-house fabrication to convert mica laminates into finished components:

Service	Capability	Tolerance
Die Stamping	0.1–2.0mm thickness	±0.05mm
CNC Milling	Up to 100mm thick	±0.10mm
Water Jet Cutting	Complex 2D profiles	±0.08mm
Surface Grinding	Precision thickness control	±0.02mm
Drilling & Tapping	M3–M12 threads	±0.1mm
Hot Forming	3D shapes (150–180°C)	Per drawing

Minimum Order: 1 piece for prototypes; 100 pieces for production runs

File Formats Accepted: DXF, DWG, STEP, IGES, PDF

Packaging & Shipping

Standard Packaging: FE film wrap → Carton box → Fumigated wooden pallet
Export Crating: Sea-worthy wooden cases (100kg max per case)
Labeling: RoHS, UL, and batch traceability QR codes on each package
Global Delivery: FOB, CIF, DDP terms available; typical 10–25 days transit