Overview
PCGR40 is a flame-retardant polycarbonate resin engineered for high-performance applications. It combines the inherent strength and clarity of polycarbonate with enhanced fire resistance, making it ideal for industries where safety and durability are critical. The material is commonly supplied in pellet form for injection molding or extrusion processes. Polycarbonates like PCGR40 are favored for their balance of mechanical properties and processability. They are often used as alternatives to metals or glass in applications requiring lightweight yet robust materials. The 'GR40' designation typically indicates a specific grade with optimized flame-retardant properties.
Physical and Chemical Properties
PCGR40 exhibits a density of approximately 1.2 g/cm³, making it lighter than many engineering plastics. Its thermal properties include a melting point range of 220-250°C, allowing it to withstand high-temperature environments without significant deformation. The material maintains dimensional stability across a wide temperature range. Key mechanical properties include high impact resistance (even at low temperatures) and good tensile strength. As a flame-retardant grade, PCGR40 typically achieves UL94 V-0 ratings, indicating self-extinguishing properties. The material also offers excellent electrical insulation characteristics, with volume resistivity exceeding 10^15 Ω·cm.
Main Applications
In the electrical industry, PCGR40 is widely used for enclosures of switches, connectors, and circuit breakers where flame retardancy is mandatory. Its combination of electrical insulation and fire safety makes it ideal for these applications. The automotive sector utilizes PCGR40 for interior components that must meet strict flammability standards. The construction industry employs PCGR40 in safety glazing, lighting fixtures, and protective barriers. Its impact resistance and transparency (in clear grades) make it suitable for windows and skylights in public buildings. Emerging applications include 3D printing filaments for functional prototypes requiring flame-retardant properties.
Safety and Storage
While PCGR40 is generally safe when properly processed, precautions should be taken during handling. Inhalation of dust generated during machining should be avoided through proper ventilation or respiratory protection. The material may release small amounts of bisphenol A (BPA) at high processing temperatures. Storage recommendations include keeping the material in its original packaging in a dry environment below 30°C. Moisture absorption can affect processing characteristics, so drying (typically at 120°C for 3-4 hours) is recommended before use. Fire safety measures should follow standard procedures for organic materials, despite the flame-retardant properties.
B2B Procurement Guide
When sourcing PCGR40, verify the supplier's certifications for flame retardancy (such as UL94 test reports) and request material safety data sheets. Reputable suppliers should provide technical data sheets with detailed property specifications. Consider ordering samples for preliminary testing before large purchases. Pricing typically ranges from $3-5 per kilogram for bulk orders (pallet quantities), with variations based on market conditions and supplier location. For specialized applications, inquire about custom formulations with enhanced properties. Lead times can vary from 2-6 weeks depending on supplier inventory and order size.
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