Overview
Flame Retardant Polycarbonate (FR PC) is a specialized engineering thermoplastic designed to provide exceptional impact resistance, flame resistance, heat resistance, electrical insulation, and dimensional stability while meeting stringent fire safety standards.
By incorporating flame-retardant additives into standard polycarbonate resin, FR PC achieves fire performance ratings such as UL 94 V-0, V-1, and 5VA, making it ideal for electrical, electronic, automotive, aerospace, and industrial applications where fire safety is critical.
Unlike many flame-retardant plastics that sacrifice toughness, FR PC maintains the outstanding impact resistance and mechanical strength that standard polycarbonate is known for.
Flame Retardant PC is widely used in:
- Electrical Enclosures
- Server and Data Center Components
- Consumer Electronics Housings
- Battery Systems
- Automotive Electrical Components
- Medical Equipment
- Aerospace Interior Components
- Industrial Control Systems
Due to its combination of fire safety and mechanical performance, FR PC is one of the most widely specified fire-rated engineering plastics worldwide.
Material Specification
| Property | Value |
|---|---|
| Material Designation | Flame Retardant Polycarbonate |
| Abbreviation | FR PC |
| Material Family | Fire-Rated Engineering Thermoplastic |
| Density | 1.20–1.35 g/cm³ |
| Transparency | Available in Transparent and Opaque Grades |
| Flame Rating | UL 94 V-0 / V-1 / 5VA |
| Typical Manufacturing Methods | Injection Molding, CNC Machining |
| Standard Forms | Sheet, Rod, Pellets |
Chemical Composition
| Component | Function |
|---|---|
| Polycarbonate Polymer | Structural Matrix |
| Flame Retardant Additives | Fire Protection |
| UV Stabilizers (Optional) | Weather Resistance |
| Thermal Stabilizers | Heat Stability |
| Processing Additives | Moldability Enhancement |
Modern FR PC grades are available in both halogenated and halogen-free formulations.
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | 60–75 MPa |
| Yield Strength | 60–70 MPa |
| Elongation at Break | 40–120% |
| Flexural Strength | 90–115 MPa |
| Flexural Modulus | 2.3–2.8 GPa |
| Hardness | Rockwell R118–125 |
| Izod Impact Strength | 500–850 J/m |
Typical Mechanical Performance
| Property | Performance |
|---|---|
| Impact Resistance | Outstanding |
| Toughness | Excellent |
| Dimensional Stability | Excellent |
| Fatigue Resistance | Good |
FR PC retains much of the exceptional toughness of standard polycarbonate.
Physical Properties
| Property | Value |
|---|---|
| Density | 1.20–1.35 g/cm³ |
| Water Absorption | 0.15–0.35% |
| Thermal Conductivity | 0.20–0.25 W/m·K |
| Electrical Resistivity | >10¹⁶ Ω·cm |
| Specific Heat Capacity | 1200 J/kg·K |
| Refractive Index (Transparent Grades) | 1.586 |
Thermal Properties
| Property | Value |
|---|---|
| Glass Transition Temperature | 145–150°C |
| Heat Deflection Temperature | 120–135°C |
| Vicat Softening Temperature | 145–155°C |
| Continuous Service Temperature | -40°C to 120°C |
| Short-Term Service Temperature | Up to 135°C |
FR PC offers excellent heat resistance for demanding electrical and industrial applications.
Flame Resistance Properties
| Property | Value |
|---|---|
| UL 94 Rating | V-0 / V-1 / 5VA |
| Self-Extinguishing | Yes |
| Flame Spread Resistance | Excellent |
| Drip Resistance | Excellent |
| Smoke Generation | Low |
Many FR PC grades meet stringent international fire safety requirements for electronics and transportation industries.
Strength-to-Weight Ratio
| Material | Density (g/cm³) | Tensile Strength |
|---|---|---|
| FR PC | 1.25 | 70 MPa |
| Standard PC | 1.20 | 70 MPa |
| FR ABS | 1.18 | 50 MPa |
| Aluminum 6061 | 2.70 | 310 MPa |
FR PC provides outstanding mechanical performance while remaining lightweight.
Electrical Properties
| Property | Value |
|---|---|
| Volume Resistivity | >10¹⁶ Ω·cm |
| Surface Resistivity | >10¹⁵ Ω |
| Dielectric Strength | 15–20 kV/mm |
| Dielectric Constant | 2.9–3.3 |
These properties make FR PC ideal for electrical insulation and electronic housings.
Chemical Resistance
| Chemical Environment | Performance |
|---|---|
| Water | Excellent |
| Dilute Acids | Good |
| Dilute Alkalis | Fair |
| Oils & Greases | Good |
| Alcohols | Fair |
| Aromatic Solvents | Poor |
| Ketones | Poor |
Chemical resistance is similar to standard polycarbonate.
UV Resistance
| Property | Performance |
|---|---|
| Standard Grade | Moderate |
| UV-Stabilized Grade | Excellent |
| Outdoor Durability | Good |
| Color Stability | Good |
UV-resistant grades are available for outdoor electrical enclosures and industrial equipment.
Impact Resistance
| Property | Rating |
|---|---|
| Room Temperature Impact | Outstanding |
| Low Temperature Impact | Outstanding |
| Drop Resistance | Outstanding |
| Shock Resistance | Outstanding |
FR PC remains one of the toughest flame-rated plastics available.
Machinability
| Process | Rating |
|---|---|
| CNC Milling | Good |
| CNC Turning | Good |
| Drilling | Good |
| Tapping | Good |
| Laser Cutting | Fair |
Machinability Comparison
| Material | Machinability |
|---|---|
| ABS | Excellent |
| FR ABS | Excellent |
| FR PC | Good |
| PEEK | Moderate |
Proper tooling and cooling help maintain dimensional accuracy and surface quality.
Injection Molding Characteristics
| Property | Rating |
|---|---|
| Moldability | Excellent |
| Surface Finish Quality | Excellent |
| Dimensional Accuracy | Excellent |
| Production Efficiency | Excellent |
| Shrinkage Control | Good |
FR PC is commonly used for high-volume production of electrical and electronic components.
International Equivalent Grades
| Standard | Equivalent Grade |
|---|---|
| UL | UL 94 V-0 Polycarbonate |
| ISO | Flame Retardant Polycarbonate |
| ASTM | FR PC Resin |
| DIN | FR-PC |
| JIS | Flame Retardant Polycarbonate |
| GB/T (China) | 阻燃PC |
Available Forms
| Product Type | Availability |
|---|---|
| Sheet | Yes |
| Rod | Yes |
| Film | Yes |
| Pellets | Yes |
| Injection Molded Parts | Yes |
| Custom Components | Yes |
Typical Applications
Electronics Industry
- Laptop Housings
- Server Components
- Power Supply Covers
- Display Housings
Electrical Industry
- Circuit Breaker Housings
- Electrical Enclosures
- Distribution Equipment
- Switchgear Components
Automotive Industry
- Battery Covers
- EV Charging Components
- Fuse Boxes
- Electrical Connectors
Medical Industry
- Diagnostic Equipment Housings
- Medical Electronics
- Laboratory Equipment Covers
Aerospace Industry
- Interior Panels
- Electrical System Components
- Fire-Safe Equipment Housings
Industrial Equipment
- Control Cabinets
- Automation Equipment
- Machine Electrical Covers
Manufacturing Characteristics
| Manufacturing Process | Rating |
|---|---|
| Injection Molding | Outstanding |
| CNC Machining | Good |
| Thermoforming | Good |
| Vacuum Forming | Good |
| Secondary Assembly | Excellent |
Advantages
Excellent Flame Resistance
Meets demanding UL and international fire safety standards.
Outstanding Impact Resistance
One of the toughest fire-rated engineering plastics available.
Excellent Heat Resistance
Superior thermal performance compared with FR ABS.
Good Electrical Insulation
Ideal for electrical and electronic applications.
Lightweight
Much lighter than metal alternatives.
Excellent Dimensional Stability
Suitable for precision components and enclosures.
Limitations
Higher Cost Than FR ABS
Polycarbonate is generally more expensive.
Scratch Sensitivity
Surface hardness is lower than glass.
Moderate Chemical Resistance
Sensitive to certain solvents.
UV Sensitivity
Outdoor use may require UV-stabilized grades.
Comparison with Common Fire-Rated Plastics
| Property | FR PC | FR ABS | FR PC/ABS | PPS |
|---|---|---|---|---|
| Flame Resistance | Excellent | Excellent | Excellent | Outstanding |
| Impact Resistance | Outstanding | Good | Excellent | Moderate |
| Heat Resistance | Excellent | Moderate | Good | Outstanding |
| Cost | Higher | Lower | Moderate | Very High |
Comparison with Standard PC
| Property | FR PC | Standard PC |
|---|---|---|
| Flame Resistance | Excellent | Moderate |
| UL 94 Rating | V-0/V-1/5VA | HB |
| Impact Resistance | Outstanding | Outstanding |
| Heat Resistance | Similar | Similar |
| Cost | Higher | Lower |
Available Surface Finishes
Standard Finishes
- Gloss Finish
- Matte Finish
- Textured Finish
Functional Finishes
- CNC Machined Finish
- Polished Finish
- Bead Blasted Finish
Specialty Finishes
- Hard-Coated Finish
- Anti-Scratch Finish
- UV-Coated Finish
- EMI Shielding Coating
Frequently Asked Questions (FAQ)
What is Flame Retardant Polycarbonate?
FR PC is a fire-rated version of polycarbonate designed to meet flame safety standards while maintaining excellent impact resistance.
What is FR PC used for?
Typical applications include:
- Electrical Enclosures
- Server Components
- Battery Systems
- Medical Equipment
- Industrial Electronics
What UL ratings are available for FR PC?
Most grades are available in:
- UL 94 V-0
- UL 94 V-1
- UL 94 5VA
Is FR PC transparent?
Yes. Transparent flame-retardant grades are available, although some formulations may have slight haze.
Is FR PC stronger than FR ABS?
Yes. FR PC generally offers higher impact resistance, better heat resistance, and superior toughness.
Can FR PC be machined?
Yes. FR PC offers good CNC machining performance for custom parts and prototypes.
Why choose Flame Retardant PC?
Because it combines:
- Excellent Flame Resistance
- Outstanding Impact Strength
- High Heat Resistance
- Electrical Insulation
- Long-Term Durability
Is FR PC suitable for battery enclosures?
Yes. It is widely used in battery packs, EV systems, and electrical safety applications.
Does GCNOV provide Flame Retardant PC manufacturing services?
Yes. GCNOV provides:
- FR PC CNC Machining
- FR PC Injection Molding
- Thermoforming
- Custom Plastic Fabrication
- Surface Finishing
- Prototype Development
- Low-Volume Production
- Mass Production