GPPS (General Purpose Polystyrene)
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GPPS (General Purpose Polystyrene)
Grade: Injection moulding, extrusion, medical usage
Usage: CD box, drink cup, egg box, extrusion package materials, medical articles, vegetable box in refrigerator
Specifications:
|
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
|
Packing: 25kg pp bags or as your requirement. |
