Polystyrene (PS) Detection

Applicable products: General grade polystyrene (GPPS), high impact polystyrene (HIPS), expandable polystyrene (EPS), modified polystyrene, and various PS injection molded, vacuum formed, and foamed products.

Applicable products: food packaging, daily necessities, electronic and electrical casings, vacuum packaging, foam cushioning materials, stationery, toys and other PS material products.

Applicable scenarios: raw material acceptance, formula development, product factory inspection, type testing, environmental and safety assessment, quality arbitration testing.

Appearance and condition: particle color, uniformity, impurities, black spots, crystal dots; Appearance, color difference, deformation, cracking, whitening, and glossiness of the product.

Physical and chemical properties: melt mass flow rate (MFR), density, ash content, volatile matter, moisture content, moisture content.

Mechanical properties: tensile strength, elongation at break, flexural strength, flexural modulus, impact strength of simply supported/cantilever beams, Rockwell hardness, compressive strength.

Thermal properties: melting temperature, Vicat softening temperature, hot deformation temperature, embrittlement temperature, thermal stability, and thermal oxidative aging performance.

Optical performance: transmittance, haze, glossiness (applicable to transparent GPPS).

Environmental resistance: resistant to chemical reagents, oil, water, UV aging, weather aging, and stress cracking.

Processing performance: molding shrinkage rate, melt index stability, processing thermal stability, and resistance to yellowing.

Environmental Protection and Safety: Migration of Harmful Substances in Food Contact, Heavy Metals RoHS, Polycyclic aromatic hydrocarbons, combustion performance, odor, microbial limits.