HIPS Chimei Zhenjiang PH‑888G
Material Introduction: HIPS Chimei Zhenjiang PH‑888G is a high‑gloss, high‑impact and heat‑resistant high‑impact polystyrene plastic. It is an impact‑modified polystyrene produced by adding polybutadiene rubber particles into polystyrene. It delivers favorable mechanical properties and excellent surface gloss, and is mainly used for injection molding.
Main Applications
‑ Household Appliances: Indoor air‑conditioner panels, ceiling‑mounted exhaust fan outlets, monitor housings, bedside audio systems, etc. ‑ Electronic & Electrical: Various appliance housings and accessories. ‑ Daily Commodities: Household articles, stationery, etc. ‑ Packaging Materials: Cosmetic packaging, daily‑goods packaging, etc.
Physical Properties
| Property Item |
Test Condition / Standard |
Value |
Unit |
| Density |
ISO 1183 or ASTM D‑792 |
1.05 |
g/cm³ |
| Melt Flow Rate (MFR) |
200°C/5.0 kg, ISO 1133 or ASTM D‑1238 |
3.5‑4.0 |
g/10min |
| Water Absorption |
‑ |
＜0.1 |
% |
| Mold Shrinkage |
‑ |
0.4‑0.7 |
% |
Mechanical Properties
| Property Item |
Test Condition / Standard |
Value |
Unit |
| Tensile Strength (Yield) |
23°C, ISO 527‑2 |
28 |
MPa |
| Tensile Strength (Yield) |
ASTM D‑638 |
34‑35 |
MPa (approx.330‑350 kg/cm²) |
| Elongation at Break |
23°C, ISO 527‑2 |
50 |
% |
| Elongation at Break |
ASTM D‑638 |
30‑40 |
% |
| Flexural Strength |
23°C, ISO 178 |
45 |
MPa |
| Flexural Strength |
ASTM D‑790 |
48‑54 |
MPa (approx.480‑540 kg/cm²) |
| Flexural Modulus |
23°C, ISO 178 |
1400 |
MPa |
| Charpy Notched Impact Strength |
23°C, ISO 179/1eA |
10 |
kJ/m² |
| Charpy Un‑notched Impact Strength |
23°C, ISO 179/1eU |
100 |
kJ/m² |
| Izod Notched Impact Strength |
1/8", ASTM D‑256 |
9.5‑12.5 |
kg‑cm/cm |
| Izod Notched Impact Strength |
1/4", ASTM D‑256 |
8.5‑9.0 |
kg‑cm/cm |
| Rockwell Hardness (L‑scale) |
ASTM D‑785 |
L‑85 |
‑ |
Thermal Properties
| Property Item |
Test Condition / Standard |
Value |
Unit |
| HDT (Heat‑Distortion Temperature) |
1.80 MPa, annealed, ISO 75‑2/A |
95 |
°C |
| HDT (Heat‑Distortion Temperature) |
1.80 MPa, unannealed, ISO 75‑2/Af |
79 |
°C |
| HDT (Heat‑Distortion Temperature) |
1.8 MPa, unannealed, ASTM D‑648 |
82 (180) |
°C (°F) |
| HDT (Heat‑Distortion Temperature) |
1.8 MPa, annealed, ASTM D‑648 |
95 (203) |
°C (°F) |
| Vicat Softening Temperature |
ISO 306/A50 |
100 |
°C |
| Vicat Softening Temperature |
ISO 306/B50 |
91 |
°C |
| Vicat Softening Temperature |
ASTM D‑1525 |
102‑103 (215‑217) |
°C (°F) |
Flame‑Retardant Properties
| Property Item |
Test Condition / Standard |
Value |
Unit |
| Flame Rating |
UL94, 1.50 mm |
HB |
Grade |
| Flame Rating |
UL94, 3.00 mm |
HB |
Grade |
Injection Molding Parameters
| Process Parameter |
Recommended Range |
Unit |
Remarks & Descriptions |
| Drying Treatment |
2‑3 h at 80°C |
‑ |
Drying is generally unnecessary. Drying is recommended if material absorbs moisture or is stored in humid environment. |
| Barrel Temperature |
|
°C |
|
| ‑ Feed Section |
160‑180 |
°C |
|
| ‑ Compression Section |
190‑210 |
°C |
|
| ‑ Nozzle |
185‑205 |
°C |
|
| Mold Temperature |
40‑70 |
°C |
Adjust according to product thickness, dimension, gate and runner system. |
| Injection Pressure |
30‑150 (general PS range) |
MPa |
Sufficient holding pressure is required to prevent sink marks. |
| Hot‑runner Temperature |
Shall not exceed 240°C |
°C |
To avoid material degradation. |
Disclaimer: All above data is for reference only.
