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Polystyrene (GPPS), or general-purpose polystyrene, is a versatile thermoplastic polymer made from the polymerization of styrene monomers. It is characterized by its rigidity and clarity, making it suitable for a wide range of applications. GPPS is typically produced in a variety of grades, allowing for customization based on specific performance requirements.
| Appearance | Transparent or slightly yellow solid |
| Density | 1.04 to 1.06 g/cm³ |
| Melting Point | 240 to 260 °C |
| Tensile Strength | 30 to 50 MPa |
| Impact Resistance | Moderate |
When selecting polystyrene (GPPS), buyers should consider the specific application requirements, such as clarity, rigidity, and thermal properties. It is important to specify the desired grade, including any necessary impact resistance or processing characteristics. Additionally, certifications for food contact applications or compliance with industry standards may be relevant, along with the required quantities for production.
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GPPS is primarily used in packaging, consumer products, and various industrial applications.
Yes, GPPS can be recycled, although the availability of recycling facilities may vary.
GPPS typically performs well up to temperatures of about 70 °C.
Yes, GPPS is often used for food packaging, but it must meet specific food safety regulations.
GPPS is rigid and clear, while HIPS (high-impact polystyrene) includes rubber additives for improved impact resistance.
GPPS should be stored in a cool, dry place away from direct sunlight and moisture.