Crystal Polystyrene

General-purpose polystyrene (GPPS) is a material produced by the polymerization of styrene monomer. It is transparent and crystal-like in appearance and is manufactured using the suspension process. Due to its easy processability, it is widely used in various industrial applications such as food packaging, refrigeration systems, audio and video equipment, consumer electronics, office equipment, medical devices, and toys.

GPPS1160

Properties Unit Test Method Typical Value
Melt Flow Index (200°C / 5kg) g/10 min ASTM D-1238 2.5
Styrene Residual Monomer ppm CLGLABPSG004 (ATOFINA Test Method) <500
Vicat Softening Point (50°C/hr, 1kg) °C ASTM D-1525 105
Rockwell Hardness ASTM D-785 Scale / L70
Tensile Stress at Break MPa ASTM D-638 48
Elongation at Break % ASTM D-638 3
Tensile Modulus MPa ASTM D-638 3200

GPPS1540

Properties Unit Test Method Typical Value
MFI (200°C / 5kg) g/10 min ASTM D 1238 11
Styrene Residual Monomer ppm CLGLABPSG004 (ATOFINA Test Method) <500
Vicat Softening Point (50°C/Hr, 1kg) °C ASTM D 1525 Min 89.5
Rockwell Hardness - ASTM D 785 Scale L70
Tensile Strength @ Yield MPa ASTM D 638
Tensile Stress at Break MPa ASTM D 638 45
Elongation at Break % ASTM D 638 2
Flexural Modulus MPa ASTM D 790 3000
Tensile Modulus MPa ASTM D 638 3100
Refractive Index - ISO Method 1.591
Water Absorption % ASTM D 570 <0.1
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