Polypropylene (PP) is a thermoplastic polymer made by the polymerization of propylene monomers. It is known for its semi-crystalline structure, which provides a balance of rigidity and flexibility. PP resists most acids, bases, and organic solvents, and it has a relatively high melting point, making it suitable for applications requiring heat resistance. However, it can degrade under UV exposure without stabilizers.
Technical Characteristics
| Molecular formula | (C₃H₆)ₙ |
| Density (gr/cm3) | 0.90 – 0.91 |
| Melting point | ~160 – 165°C |
| Melt flow index at 230°C and 2.16 kg load | 0.3 – 50 (gr/10min) depending on grade |
| Tensile strength | 30 – 40 (MPa) |
| Vicat softening temperature | ~150°C |
| Appearance | Semi-transparent to opaque, rigid, lightweight |
Applications
- Packaging (containers, caps, films)
- Automotive parts
- Home appliances
- Medical devices
- Fibers for textiles and carpets
- Pipes and fittings
- Stationery and household items
Environmental Impact of PP
Polypropylene is non-biodegradable and contributes to long-term plastic waste. It is recyclable (coded as #5) and has relatively low environmental impact during production compared to some other plastics. However, poor recycling rates and single-use applications remain concerns. Promoting closed-loop recycling systems and reduced single-use packaging is crucial for sustainability.
Safety Measures and Regulations for Handling PP
PP is generally considered safe and is widely used in food-grade and medical products. During manufacturing, care must be taken to avoid overheating, as it may release irritating fumes. Operators should use PPE and follow guidelines from organizations like OSHA, EPA, and FDA to ensure safety and compliance.
application.
Packing
Polypropylene is usually supplied in 25 kg bags or jumbo bags, in pellet or powder form, ready for molding, extrusion, or fiber production.
Polypropylene (PP) is a thermoplastic polymer made by the polymerization of propylene monomers. It is known for its semi-crystalline structure, which provides a balance of rigidity and flexibility. PP resists most acids, bases, and organic solvents, and it has a relatively high melting point, making it suitable for applications requiring heat resistance. However, it can degrade under UV exposure without stabilizers.
Technical Characteristics
| Molecular formula | (C₃H₆)ₙ |
| Density (gr/cm3) | 0.90 – 0.91 |
| Melting point | ~160 – 165°C |
| Melt flow index at 230°C and 2.16 kg load | 0.3 – 50 (gr/10min) depending on grade |
| Tensile strength | 30 – 40 (MPa) |
| Vicat softening temperature | ~150°C |
| Appearance | Semi-transparent to opaque, rigid, lightweight |
Applications
- Packaging (containers, caps, films)
- Automotive parts
- Home appliances
- Medical devices
- Fibers for textiles and carpets
- Pipes and fittings
- Stationery and household items
Environmental Impact of PP
Polypropylene is non-biodegradable and contributes to long-term plastic waste. It is recyclable (coded as #5) and has relatively low environmental impact during production compared to some other plastics. However, poor recycling rates and single-use applications remain concerns. Promoting closed-loop recycling systems and reduced single-use packaging is crucial for sustainability.
Safety Measures and Regulations for Handling PP
PP is generally considered safe and is widely used in food-grade and medical products. During manufacturing, care must be taken to avoid overheating, as it may release irritating fumes. Operators should use PPE and follow guidelines from organizations like OSHA, EPA, and FDA to ensure safety and compliance.
application.
Packing
Polypropylene is usually supplied in 25 kg bags or jumbo bags, in pellet or powder form, ready for molding, extrusion, or fiber production.
| PP HP 550 J HOMO POLYMER C 30 S ZR 348 U ZH 510 L HD 225 HP 552 R 1102 XL 1102 XK EP 440 G CO POLYMER EP 440 L EP 548 R RP-345 S EP 548 T RP 210 G RP 270 G MR 230 PIPE PNR 230 C ZR 230 C 3212 E |