1. Product Introduction & Main Application
Arnico’s Polypropylene Homopolymer (PPH) is the simplest and hardest type of polypropylene, made solely from propylene monomer with a high degree of crystalline order (isotactic). This grade, with its high tensile strength, stiffness, and chemical and thermal resistance, is the primary material for the production of injection-molded automotive parts (bumpers, battery cases), household appliances (vacuum cleaner and washing machine bodies), high-tenacity fibers, and packaging tapes.
2. Technical Specifications
| Technical Parameter | General Injection Grade | Fiber / Raffia Extrusion Grade | Unit |
|---|---|---|---|
| MFI (230/2.16 kg) | 8 – 25 | 2 – 5 | g/10min |
| Tensile Strength at Yield | ≥ 32 | ≥ 32 | MPa |
| Vicat Softening Point (A50) | ≥ 152 | ≥ 153 | °C |
| Izod Impact Strength (23°C) | 3 – 5 | 4 – 6 | kJ/m² |
| Rockwell Hardness (R-Scale) | ≥ 90 | ≥ 95 | – |
| Density | 0.905 – 0.910 | 0.905 – 0.910 | g/cm³ |
3. Features & Benefits
-
The Highest Stiffness & Hardness: Excellent resistance to deformation under load, ideal for structural parts.
-
High Heat Resistance (Vicat > 152°C): Suitable for use in high-temperature applications, such as engine compartments.
-
Exceptional Chemical Resistance: Inert to most acids, bases, and solvents at room temperature.
-
Easy Processability (High MFI): Allows for the fast and easy injection of thin-walled parts with high dimensional accuracy.
4. Industrial Applications
-
Automotive Parts: Bumpers (unreinforced), battery cases, dashboards, and interior components.
-
Household Appliances: Vacuum cleaner bodies, washing machine drums, and microwave-safe containers.
-
Fibers & Tapes: Packaging strapping, woven sacks, and plastic ropes.
-
Furniture & Garden Items: Plastic chairs and tables.
5. Safety & Handling
-
MSDS (Material Safety Data Sheet): The granules are non-toxic and safe. Hydrocarbon vapors are released at processing temperatures. The Arnico MSDS file must be obtained.
-
Storage Conditions: Store in 25kg bags in a dry, cool warehouse.
-
Personal Protective Equipment (PPE): Gloves for handling hot granules.
6. Quality Assurance & COA
Arnico PPH shipments are accompanied by a Certificate of Analysis (COA) detailing the precise MFI, tensile strength, and Vicat softening point.
