POLYREX® PG-22

About
POLYREX® PG-22 is a General Purpose Polystyrene product. It is available in Africa & Middle East, Asia Pacific, Europe, Latin America, or North America. Characteristics include: Flame Rated RoHS Compliant&&

Product Description
SupplierCHI MEI
GenericPS (GPPS)
Material StatusCommercial: Active
FeaturesHB
AvailabilitysAfrica & Middle East ,North America,Latin America,Asia Pacific,Europe

Technical Data
PHYSICALNominal valueUnitTest method
Density1.05g/cm³ASTM D792
Density1.04g/cm³ISO 1183
Melt Flow Rate
200℃,5.0kg18g/10minASTM D1238
Melt Volume Rate
200℃,5 kg18.8cm³/10minISO 1133
Shrinkage rate0.40 to 0.70%ISO 294-4

IMPACTNominal valueUnitTest method
Charpy Notched Impact Strength ISO 179
-30℃1.8kJ/m²ISO 179
23℃2.0kJ/m²ISO 179
Impact strength of cantilever beam notch ASTM D256
23℃,3.2mm15J/mASTM D256
23℃,6.4mm14J/mASTM D256
Impact strength of cantilever beam notch ISO 180/1A
-30℃1.8kJ/m²ISO 180-1A
23℃2.0kJ/m²ISO 180-1A

THERMALNominal valueUnitTest method
Hot deformation temperature
1.8 MPa, annealed79.0ASTM D648
1.8 MPa, unannealed73.0ISO 75-2/A
1.8 MPa, unannealed75.0ASTM D648
Vicat Softening Temp87.0ASTM D1525 6
Vicat Softening Temp 
A5087.0ISO 306/A50
B5082.0ISO 306
Linear coefficient of thermal expansion
MD5.0E-5 to 8.0E-51/℃ISO 11359-2

FLAME CHARACTERISTICSNominal valueUnitTest method
Flame retardant level
1.50 mmHB UL 94

MECHANICALNominal valueUnitTest method
tensile strength
fracture41.6MPaASTM D638
fracture40.0MPaISO 527-2/50
Tensile strain
fracture2.0%ASTM D638
fracture3.0%ISO 527-2/50
Bending modulus3030MPaASTM D790
Bending modulus2400MPaISO 178
bending strength52.9MPaASTM D790
bending strength54.0MPaISO 178
Rockwell hardness
M-level74 ASTM D785

Process Conditions
injectionNominal valueUnitTest method
Drying temperature80°C
Drying time2.0 to 3.0hr
Barrel rear temperature150 to 170°C
Barrel middle temperature170 to 190°C
Barrel front temperature175 to 195°C
Mold temperature40 to 70°C

Notes
1. Typical properties: these are not to be construed as specifications.
2. 23°C
3. 0.24 in/min
4. 0.11 in/min
5. 0.079 in/min
6. Rate A (50°C/h), Loading 1 (10 N)
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