Chi Mei Wonderlite PC – 115U Hot Sale PC Resin

Chi Mei Wonderlite PC-115U is a UV-stabilized, low-viscosity polycarbonate (PC) resin manufactured by Chi Mei Corporation using a non-phosgene trans-esterification process.

Wonderlite PC-115U is suitable for a wide range of applications due to its robust material properties. Below are key design applications with specific considerations:

1. Outdoor Applications: Traffic signs, outdoor lighting fixtures, and protective covers.
2. Stationery Products: External pen tubing, transparent rulers, and other stationery components.
3. Toys and Consumer Goods: Transparent toy components, protective casings, and decorative elements.
4. Transparent Molded Products: Lenses, display covers, and medical device housings.

Processing Guidelines

To achieve optimal performance with Wonderlite PC-115U, follow these injection molding recommendations:

• Drying: Pre-dry the resin at 120°C for 3–4 hours to remove moisture, preventing defects like bubbles or splay.
• Melt Temperature: Set between 260–300°C to ensure good flow while avoiding thermal degradation.
• Mold Temperature: Maintain at 80–120°C to optimize surface finish and minimize residual stresses.
• Injection Speed: Use moderate to high injection speeds for thin-walled parts to ensure complete mold filling.
• Cooling Time: Adjust based on part thickness (typically 10–30 seconds for 1–3 mm walls) to prevent warpage.
• Ventilation: Ensure proper mold venting to avoid trapped gases, which can cause burn marks or incomplete filling.

Note: Always consult the Chi Mei Corporation processing recommendation datasheet for specific parameters.

Design Constraints

• Stress Cracking: Avoid sharp corners and notches in designs, as polycarbonate is susceptible to stress cracking under high stress or chemical exposure.
• Chemical Resistance: PC-115U has limited resistance to certain solvents (e.g., acetone, benzene). Avoid applications involving prolonged exposure to such chemicals.
• Cost: Polycarbonate is more expensive than alternatives like ABS or PMMA. Optimize part thickness and geometry to balance cost and performance.
• UV Exposure Limits: While UV-stabilized, prolonged exposure to extreme UV conditions may still cause gradual degradation. Consider additional protective coatings for critical applications.

Sustainability and Manufacturing

• Eco-Friendly Production: PC-115U is produced via a non-phosgene melt process, reducing environmental impact by eliminating toxic chemicals and minimizing wastewater.
• Recyclability: Polycarbonate is recyclable, but designs should facilitate disassembly to support recycling processes.
• Energy Efficiency: The material’s high flowability allows for lower melt temperatures, reducing energy consumption during molding.

Recommendations for Prototyping and Testing

• Prototyping: Use 3D-printed molds or soft tooling for initial prototypes to test fit and function, followed by steel molds for production.
• Testing: Conduct environmental stress cracking tests (ASTM D1693) and UV exposure tests (ASTM G154) to validate performance in outdoor applications.
• Simulation: Use mold flow analysis software (e.g., Moldflow) to optimize gate placement, cooling channels, and cycle times for complex parts.

Sourcing and Additional Information

• Suppliers: PC-115U is available through multiple distributors globally. Contact Chi Mei Corporation or visit their e-commerce platform for sourcing details.
• Technical Data: Detailed mechanical, thermal, and electrical properties are available through Material Data Center or UL Prospector (registration required).
• Verification: Always verify material properties and processing conditions with Chi Mei Corporation to ensure suitability for your application.