POLYREX® PH-88

About
POLYREX® PH-88 is a High Impact Polystyrene product. It is available in Africa & Middle East, Asia Pacific, Europe, Latin America, or North America. Characteristics include: Flame Rated RoHS Compliant Impact Resistant&&

Product Description
SupplierCHI MEI
GenericPS (HIPS)
Material StatusCommercial: Active
FeaturesHigh impact resistance,HB
AvailabilitysAfrica & Middle East ,North America,Latin America,Asia Pacific,Europe

Technical Data
PHYSICALNominal valueUnitTest method
Density 
1.05g/cm³ASTM D792
23℃1.03g/cm³ISO 1183
Melt Flow Rate
200℃,5.0kg6.0g/10minASTM D1238
Melt Volume Rate
200℃,5 kg5.50cm³/10minISO 1133
Shrinkage rate0.40 to 0.70%ISO 294-4

IMPACTNominal valueUnitTest method
Charpy Notched Impact Strength ISO 179
-30℃6.5kJ/m²ISO 179
23℃11kJ/m²ISO 179
Impact strength of cantilever beam notch 
23℃,3.2mm98J/mASTM D256
23℃,6.4mm83J/mASTM D256
-30℃6.0kJ/m²ISO 180-1A
23℃11kJ/m²ISO 180-1A

THERMALNominal valueUnitTest method
Hot deformation temperature 
1.8 MPa, unannealed80.0ASTM D648
1.8 MPa, unannealed74.0ISO 75-2/A
1.8 MPa, annealed94.0ASTM D648
1.8 MPa, annealed89.0ISO 75-2/A
Vicat Softening Temp 
98.0ASTM D1525 7
A5096.0ISO 306/A50
B5090.0ISO 306
Linear coefficient of thermal expansion
MD4.0E-5 to 6.0E-51/℃ISO 11359-2

FLAME CHARACTERISTICSNominal valueUnitTest method
Flame retardant level
1.50 mmHB UL 94

MECHANICALNominal valueUnitTest method
Rockwell hardness
Level L60 ASTM D785
tensile strength 
yield26.0MPaISO 527-2/50
fracture23.5MPaASTM D638
fracture24.0MPaISO 527-2/50
Tensile strain 
fracture40%ASTM D638
fracture40%ISO 527-2/50
Bending modulus 
1930MPaASTM D790
2100MPaISO 178
bending strength 
37.2MPaASTM D790
37.0MPaISO 178

Process Conditions
injectionNominal valueUnitTest method
Drying temperature80°C
Drying time2.0 to 3.0hr
Barrel rear temperature160 to 180°C
Barrel middle temperature180 to 200°C
Barrel front temperature180 to 200°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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