Injection Molding Grade(GPPS)
Overview
Sinopec PS injection molding grade has good rigidity,light transmittance,corrosion resistance, eletrical insultion property and dyeability. it features low shrinking rate,good molding and processing properties and short molding cycle time.in addition,it allows high-speed injection molding and products made from it have excellent dimensional stability.
Product Identification
[Formula]:(C8H8)n
[EINECS]:500-008-9
[RTECS]:WL6475000
[RTECS Class]:Tumorigen
[Beilstein/Gmelin]:NA
Physical and Chemical Properties
[Appearance]:Clear pellets
[Solubility in water]:Insoluble
[Density]:1.04-1.111 g/cm3 (20 C)
[Usage]:Common commercial polymer.
Introduction of GPPS:
General Purpose Polystyrene is a kind of thermoplastic resin, is a colorless, odorless, tasteless, shiny, transparent beaded or granular solid. Density is 1.04 to 1.09, transparency is 88% to 92%, refractive index is 1.59 to 1.60. In the stress function, resulting in birefringence, the so-called stress - optical effect. Product of the melting temperature is 150 to 180 ° C, thermal decomposition temperature is 300 ° C, the heat distortion temperature is 70 to 100 ° C, long-term use temperature is 60 ~ 80 °C
Specification of GPPS Resin:
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 |
Handling and Storage:
[Storage]
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
[Handling]
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.