GPPS Plastic Raw Material/GPPS Resin/GPPS Granules/General Purpose Polystyrene/GPPS Supplier/GPPS Price

Whatsapp/Wechat:0086-17080465659 Please Contact us to get Latest Price and other Informations. GPPS (General purpose polystyrene) General-purpose polystyrene is a thermoplastic resin that is a colorless, odorless, odorless, shiny, transparent beaded or granulated solid. The density is 1.04~1.09, the transparency is 88%~92%, and the refractive index is 1.59~1.60. Under the action of stress, birefringence is produced, the so-called stress-optical effect. The melting temperature of the product is 150~180°C, the thermal decomposition temperature is 300°C, the heat distortion temperature is 70~100°C, and the long-term use temperature is 60~80°C. GPPS is low water absorption, in a wet environment can still maintain its mechanical properties and dimensional stability. Excellent electrical properties, volume resistivity and surface resistivity are high, and independent of temperature, humidity changes, are not subject to corona discharges. Radiation resistance is also very good.   Application Food packingDue to the transparency of GPPS and excellent rigidity, electrical properties and printing performance, especially good hygiene and low cost, it has broad application prospects in food packaging. Electromechanical industry, instrumentation, communication equipment industry.Instrument housing, lampshade, optical parts, instrument parts;Acid trough, telecommunications parts, high frequency capacitors,etc.  Daily necessities.Bottle caps, containers, decorations, buttons, combs, toothbrushes, soap boxes, cigarette boxes and toys,etc.  Product Parameters Item Test conditions Test method Test data unit Density    ISO 1183:1987 1040 kg/m3 Water absorption   ISO 62:1999 <0.1 % Melt flow rate 200°C/5kg ISO 1133:1997 3.8 cm3/10min Process shrinkage   ISO 294-4:1997 0.4-0.6 % Charpy impact strength  1eU ISO 179:1993 15 kj/m2 Tensile modulus 1mm/min ISO 527-2:1993 3300 MPa Elongation  50mm/min ISO 527-2:1993 3 % Tensile strength at break 50mm/min ISO 527-2:1993 55 MPa Ball indentation hardness H 358N/30s ISO 2039-1:1993 150 N/mm2 Bending strength 2mm/min ISO 178:1993 100 MPa HDT 1.8MPa ISO 75-2:1993 84 °C Linear coefficient of thermal expansion (23-80)°C DIN 53 752 0.8-1.0 K-1 Heat conduction   DIN 52 612 0.16 W/mK Vicat softening point B50/oil ISO 306:1994 93 °C Flame retardance >1.4mm UL-Standard 94 94HB Class     Detailed Photos Packaging & Shipping