| Application | Thin-walled injection molding,disposable lunch boxes |
| Analysis Item | Quality Index | Test result | Experiment method | |
Superior product | Qualified product | |||
| Grain Appearance, (Black Grain) | 0 | 0 | 0 | SH/T1541.1 |
Melt mass flow rate, g/10min | 60.0-85.0 | 60.0-85.0 | 65 | GB/T3662.1-2018 |
Tensile yield stress, MPa | ≥33 | ≥31 | 36.6 | GB/T1040.2 |
Charpy notched impact strength (23Celsius), KJ/m^3 | ≥2.4 | ≥2.4 | 2.8 | GB/T1043.1 |
Grain ash, % (mass fraction) | ≤0.05 | ≤0.05 | 0.04 | GB/T 9345.1-2008 |
Grain appearance (color and dark spots)pc/kg | ≤5 | ≤10 | 0 | SH/T1541.1 |
Isotactic index,% quality score | ≥96 | ≥96 | 96.2 | GB/T 2412 |
| Flexural modulus,Mpa | ≥1600 | ≥1600 | 1633 | GB/T 9341 |
| Large and small grains, g/kg | ≤8 | ≤10 | 6 | SH/T1541.1 |
|
|
|
 |  |  |
| Application | Thin-walled injection molding,disposable lunch boxes |
| Analysis Item | Quality Index | Test result | Experiment method | |
Superior product | Qualified product | |||
| Grain Appearance, (Black Grain) | 0 | 0 | 0 | SH/T1541.1 |
Melt mass flow rate, g/10min | 60.0-85.0 | 60.0-85.0 | 65 | GB/T3662.1-2018 |
Tensile yield stress, MPa | ≥33 | ≥31 | 36.6 | GB/T1040.2 |
Charpy notched impact strength (23Celsius), KJ/m^3 | ≥2.4 | ≥2.4 | 2.8 | GB/T1043.1 |
Grain ash, % (mass fraction) | ≤0.05 | ≤0.05 | 0.04 | GB/T 9345.1-2008 |
Grain appearance (color and dark spots)pc/kg | ≤5 | ≤10 | 0 | SH/T1541.1 |
Isotactic index,% quality score | ≥96 | ≥96 | 96.2 | GB/T 2412 |
| Flexural modulus,Mpa | ≥1600 | ≥1600 | 1633 | GB/T 9341 |
| Large and small grains, g/kg | ≤8 | ≤10 | 6 | SH/T1541.1 |
|
|
|
| | |
