Overview
Polypropylene (PP) is a lightweight, cost-effective thermoplastic known for its outstanding chemical resistance and weldability. It is ideal for applications requiring strong resistance to acids, alkalis and organic solvents. Its low moisture absorption and food contact compliance make it suitable for hygienic and corrosive environments. Polypropylene is also an excellent insulator and can be easily fabricated or welded into complex structures, making it a favourite in chemical, water treatment and food industries.
Key Features
- Excellent chemical resistance to acids, bases and solvents
- Lightweight and tough
- Low moisture absorption
- High impact resistance at room temperature
- FDA and EEC food contact compliant (natural grade)
- Weldable and easy to fabricate
- Electrically insulating properties
- Low cost and recyclable
Applications
- Chemical storage and mixing tanks
- Piping systems for corrosive fluids
- Ventilation ducts and fume hoods
- Laboratory and pharmaceutical equipment
- Food handling and storage containers
- Liners and cladding panels
- Pump components and valve parts
Weaknesses
- Limited high-temperature performance (softens above 100°C)
- Brittle at low temperatures
- Poor abrasion resistance
- Difficult to glue or bond without specialized techniques
