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Basic characteristics
Typical value of physical properties
Please use the data as a guide.
In some cases, there is a slight difference by varieties.
| unit | values | |
|---|---|---|
| Water absorption | % | 0.1＞ |
| Linear expansion coefficient | 10-5/ﾟC | 6～8 |
| Molding shrinkage | % | 0.4～0.6 |
| Refractive index*1 | % | 1.59 |
| Specific heat | J/kgﾟC | 1420 |
| Thermal conductivity | W/mﾟC | 0.12 |
| Density*2 | kg/m3 | 1040～1050 |
| Poisson's ratio | - | 0.35～0.38 |
| Ignition temperature | ﾟC | 495 |
| Flash temperature | ﾟC | 360 |
| Combustion heat | kJ/kg | 40000 |
| Oxygen index | - | 18 |
| Cool tolerance temperature | ﾟC | -30 |
*1 GPPS only
*2 Except for flame retardant PS
Typical conditions in injection molding
| Type of resin | High flow | General | Heat resistant | ||
|---|---|---|---|---|---|
| Estimated Melt mass-flow rate（g/10min） | More than 10 | 5 ～ 10 | Less than 5 | ||
| Type of injection molding machine | Inline screw | ||||
| Cylinder temperature | (ﾟC) | H-1 | 180～190 | 190～200 | 200～210 |
| H-2 | 190～200 | 200～210 | 210～230 | ||
| H-3 | 200～210 | 210～220 | 230～240 | ||
| Nozzle temperature | (ﾟC) | 200 | 210 | 230 | |
| Injection pressure | （MPa） | Nozzle portion | 60～70 | 70～80 | 80 |
| Mold temperature | (ﾟC) | 40 | 40 | 40～50 | |
※The molding conditions proposed, is the typical conditions of the test at our company-owned injection molding machine(75～130ton) and the adoption case.
