HIPS 6630 is a high-impact polystyrene tailored for the injection molding industry. This grade is designed to be mixed with crystal polystyrene, enhancing its application range. It features a high melt flow index, making it particularly suited for fast cycling injection molding processes. The grade is available in a clean white color, making it suitable for applications requiring a neat appearance.
 
Key Features
High Melt Flow Index: Allows for faster cycling during injection molding, enhancing productivity and efficiency.
Mixable with Crystal Polystyrene: Offers flexibility in application by allowing dilution with crystal polystyrene for tailored mechanical properties.
White Color: Provides a visually appealing finish without the need for additional painting or finishing.
 
Applications
General Injection Molding: Adaptable to various injection molded products requiring high impact resistance and aesthetic appeal.
Computer Keyboards: Ideal for producing durable and aesthetically pleasing computer peripherals.
Toys: Suitable for the manufacture of robust, safe toys for children.
Spools: Used in the production of spools for thread or wire, where durability is essential.
 
Typical Properties
Melt Flow Index (200°C/5kg): 13 g/10 min (ASTM D-1238), indicating the material’s excellent flow characteristics under heat.
Styrene Residual Monomer: Less than 500 ppm (CLG LABPSG004), ensuring low residual content for enhanced safety.
Vicat Softening Point: 91°C (ASTM D-1525), the temperature at which the polymer begins to soften.
Rockwell Hardness: Scale/L70 (ASTM D-785), measuring the surface hardness of the material.
Tensile Stress at Yield: 24 MPa (ASTM D-638), showing the stress level at which the material starts to deform.
Tensile Stress at Break: 24 MPa (ASTM D-638), indicating the maximum stress the material can withstand before breaking.
Elongation at Break: 45% (ASTM D-638), demonstrating the material’s ductility and flexibility under stress.
Tensile Modulus: 3110 MPa (ASTM D-638), reflecting the stiffness of the material.
Izod Impact Strength: 5 KJ/m² (ISO 180), demonstrating the material's ability to resist impact at room temperature.
Density and Shrinkage: Approximately 1.04 kg/lit and 0.4-0.7% (ASTM D-955), crucial for processing and dimensional considerations.
 
Conclusion
HIPS 6630 is engineered for industries requiring high-speed injection molding with excellent impact resistance and aesthetic qualities. Its compatibility with crystal polystyrene and high melt flow index make it a versatile choice for manufacturers focusing on efficiency and product quality, particularly in the production of household and commercial items.