1. Introduction:
High impact polystyrene, or HIPS, is a versatile plastic resin used in the manufacture of numerous products.
Easy to fabricate, this resilient material costs little to produce and offers applications in many industries.
Its physical properties permit flexible machining and surface applications such as paints and adhesives
2.Characteristics :
Medium Impact Grade . Medium Impact Strength Low Residual Monomer, Good Heat Resistance, Base Color Stability,, Good Transparency, Easy Processing ,High Flow , High Gloss
3. Applications :
PC peripheral appliances, electrical appliances, stationery .
The material can be used as packaging filler, pressed into board, molded into products, or delivered on sheets or rolls. Its characteristic dimensional stability permits it to be employed in low strength construction, and in its natural translucent form makes it suitable for food processing applications.
4 Physical Properties
| Properties |
ASTM method |
Test Condition |
Unit |
Typical Value |
| Specific Gravity |
D542 |
--- |
--- |
1.046 |
| Melt Flow Index |
D1238 |
200°C,5 kg load |
g/10 min |
4.6 |
| Tensile Strength at Yield |
D638 |
23°C,1/8" Sample |
kg/cm2 |
300 |
| Elongation at Break |
D638 |
23°C,1/8" Sample |
% |
40 |
| Izod Impact Strength |
D256 |
23°C,A method,notched1/8"×1/2"×5/2" |
kg/m2 |
9.5
|
| Vicat Softening Temperature |
D1525 |
1 kg load,3 mm Thick ( 120°C/hr ) |
°C |
97 |
| Flammability |
UL-94 |
1/16" Sample |
File No.E50263 |
94HB |
| Residual SM monomer |
--- |
--- |
ppm |
<300 |
| Yellow Index |
--- |
--- |
--- |
-6 |
Rita
| Performance of Projects |
Test condition |
Testing Method |
Test Data |
Data Unit |
| Others |
Bending modulus |
--- |
ASTM D-790 |
2.3(2260) |
kg/cm2×104(MPa) |
| Basic Properties |
Melt Flow Index |
--- |
ASTM D-1238 |
5.5 |
g/10min |
| Mechanical Properties |
IZOD impact strength |
--- |
ASTM D-256 |
11.0(108) |
kg-cm/cm(J/m) |
| Tensile strength |
--- |
ASTM D-638 |
220(22) |
kg/cm2(MPa) |
| Tensile modulus |
--- |
ASTM D-638 |
1.5(1470) |
kg/cm2×104(MPa) |
| elongation |
--- |
ASTM D-638 |
40 |
% |
| Bending strength |
--- |
ASTM D-790 |
440(43) |
kg/cm2(MPa) |
| Thermal Properties |
Vicat Softening
point |
--- |
ASTM D-1525 |
95 |
°C |
| Heat distortin temperature |
--- |
ASTM D-1525 |
88 |
°C |
| Other |
Residucl monomer |
--- |
--- |
700 |
ppm max |
| Burning rate |
1/16" |
UL 94 |
NC |
HB |
Audited Supplier 
){kind=link}
){kind=link}