GPPS 1540 is an easy-flowing crystal polystyrene designed for high versatility in extrusion and injection molding applications. Manufactured by Tabriz Petrochemical Company, this resin is particularly suitable for creating glossy layers in co-extrusion and can be effectively used with super high impact polystyrene for enhanced results.
 
Product Description
Type: General Purpose Polystyrene (GPPS)
Features: GPPS 1540 combines excellent fluidity with a high softening point compared to similar grades like GPPS 1810/1811, making it ideal for applications requiring high gloss and precision in molding and extrusion.
 
Technical Specifications
Melt Flow Index (MFI) (200°C/5kg): 11 g/10 min (ASTM D1238), indicating good processability for extrusion and molding.
Vicat Softening Point: Minimum of 89.5°C (ASTM D1525), which supports operations requiring moderate heat resistance.
Tensile Strength at Break: 45 MPa (ASTM D638), showing its robustness in product applications.
Flexural Modulus: 3000 MPa (ASTM D790), suggesting good rigidity.
Rockwell Hardness: Scale L70 (ASTM D785), denoting a solid surface hardness suitable for various consumer products.
Elongation at Break: 2% (ASTM D638), reflecting limited flexibility.
Refractive Index: 1.591 (ISO Method), relevant for optical applications.
Water Absorption: <0.1% (ASTM D570), indicating low moisture uptake, beneficial for applications where dimensional stability is crucial.
 
Applications
Extrusion: Ideal for impact dilution, creating glossy layers in co-extrusion processes, and dilution of anionic styrene butadiene copolymer.
Injection Molding: Suitable for producing packaging articles, medical applications such as petri dishes, office equipment, pen barrels, crisper boxes for refrigerators, and cups.
 
Food Contact Safety
Compliance: GPPS 1540 meets the EC Directive 90/128/EEC standards for use in food contact applications, ensuring safety when used for food-related products.
 
Processing Guidelines
Processing Conditions: Can be tailored based on machinery and specific application needs. It is essential to monitor styrene monomer emissions during processing to maintain safe and healthy working conditions.
 
Packaging and Storage
Packaging: Packaged in 25 kg PE bags to ensure integrity and ease of handling.
Storage Recommendations: Should be stored in a dry, dust-free environment at temperatures below 50°C. Avoid direct sunlight to prevent degradation.
 
Environmental Impact and Recycling
Recycling: Products made from GPPS 1540 are recyclable and can be incinerated efficiently, thanks to their high calorific value, contributing positively to energy recovery systems. In landfill sites, GPPS 1540 does not degrade to produce harmful gases or contribute to groundwater pollution.
 
Summary
GPPS 1540 from Tabriz Petrochemical Company is a high-performance polystyrene that excels in both extrusion and injection molding applications, offering manufacturers a reliable and versatile material for high-quality, glossy, and precise products.