Polypropylene (PP) is a thermoplastic resin produced by the polymerization of propylene and is a common polymer material.
In terms of structure, polypropylene has a regular molecular structure. Depending on the arrangement position of the methyl groups, it can be divided into isotactic polypropylene, atactic polypropylene, and syndiotactic polypropylene. Isotactic polypropylene is the most important and commonly used in industry. It has a high degree of structural regularity and crystallinity, so it has good mechanical properties, heat resistance, and other characteristics.
Polypropylene has remarkable performance characteristics. In terms of mechanical properties, it has high strength and hardness, and excellent resistance to bending fatigue. For example, common plastic turnover boxes and other products can withstand multiple bending cycles without being easily damaged. In terms of heat resistance, the melting point of polypropylene is usually around 160°C - 170°C, and it performs well in some application scenarios that require a certain temperature resistance. For instance, many microwave oven meal boxes are made of polypropylene material. In terms of chemical stability, it has good tolerance to most chemical substances and is resistant to the corrosion of acid, alkali, salt solutions, etc. In addition, polypropylene also has good electrical insulation properties and can be used to manufacture some electrical components.
In the field of applications, polypropylene is widely used in multiple industries. In the packaging industry, it is used to manufacture various plastic films, plastic woven bags, food packaging containers, etc. In the automotive industry, it can be used to manufacture automotive interior parts (such as dashboards, door panels, etc.) and bumpers. In the textile industry, polypropylene fibers (polypropylene fibers) can be used to make carpets, non-woven fabrics, etc. In the construction industry, it is used to manufacture pipes, pipe fittings, etc.
| Product name: |
Polypropylene |
| Appearance: |
White particles |
| CAS NO.: |
9003-07-0 |
| EINECS NO.: |
202-316-6 |
| Molecular formula: |
C3nH6n |
| Density: |
0.90~0.91g/cm3 |
| Melting point: |
157 °C |
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