Polypropylene, referred to as PP, is a polymer made of propylene by addition polymerization. It is a white waxy material with a transparent and light appearance. The chemical formula is (C3H6)n, the density is 0.89 ~ 0.91g/cm3, flammable, the melting point is 164~170ºC, it is softened at about 155ºC, and the use temperature range is -30 ~ 140ºC. It can resist the corrosion of acid, alkali, salt solution and a variety of organic solvents below 80ºC, and can decompose under high temperature and oxidation. Polypropylene is a thermoplastic synthetic resin with excellent properties.
| Item | Test condition | Test Method | Value | Unit |
| Density | ISO 1183 | 0.944-0.955 | g/cm3 | |
| MFR | 190°C/2.16kg | ISO 1133 | 0.03-0.07 | g/10min |
| Tensile strength at yield | ISO 527-2 | 22 | MPa | |
| Elongation at break | ISO 527-2 | >350 | % | |
| ESCR | F50,50°C,100% | ASTM D-1693A | 1000 | h |
| VICAT | ASTM D-1525 | 126 | °C |
Blown Grade
| Item | Test Condition | Test Method | Value | Unit |
| Density | ISO 1183 | 0.950~0.955 | g/cm | |
| MFR | 190°C/2.16kg | ISO 1133 | 1.7~2.5 | g/10min |
| Tensile strength at yield | ISO 527-2 | 24 | MPa | |
| Elongation at break | ISO 527-2 | >600 | % |
Injection grade
| Item | Test Condition | Test Method | Value | Unit |
| MFR | 190°C/2.16kg | ASTM D-1238 | 20 | g/10min |
| Density | — | ASTM D-792 | 0.954 | g/cm3 |
| Tensile strength at yiled | — | ASTM D-638 | 28 | MPa |
| Elongation at break | — | ASTM D-638 | 250 | % |
| Impact tensile strength | — | ASTM D-1822 | 42 | kJ/m2 |
| ESCR | ASTM D-1693 | 3 | — | |
| VACIT | — | ASTM D-1525 | 127 | °C |
