1. Product Introduction & Main Application
Arnico’s Polypropylene Block Copolymer (PPC), or Impact Copolymer, is an opaque, exceptionally impact-resistant copolymer produced by a two-stage polymerization of propylene, followed by the addition of an ethylene-propylene rubber (EPR) phase within the PPH matrix. This structure dramatically increases impact resistance, even down to -30°C, making it the ideal material for automotive bumpers, battery cases, durable household appliance parts, and industrial transport crates.
2. Technical Specifications
| Technical Parameter | Automotive Injection Grade | Sheet Extrusion Grade | Unit |
|---|---|---|---|
| MFI (230/2.16 kg) | 10 – 20 | 1.0 – 3.0 | g/10min |
| Tensile Strength at Yield | ≥ 25 | ≥ 23 | MPa |
| Izod Impact Strength (23°C) | ≥ 20 | NB (No Break) | kJ/m² |
| Izod Impact Strength (-20°C) | ≥ 6 | ≥ 10 | kJ/m² |
| Vicat Softening Point | ≥ 148 | ≥ 145 | °C |
| Ethylene Content | 8 – 12 | 10 – 15 | % |
3. Features & Benefits
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Extraordinary Impact Resistance, Even in Sub-Zero Cold: Prevents car bumpers from shattering in minor accidents and winter conditions.
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An Ideal Balance of Stiffness & Toughness: The homopolymer phase provides strength, while the rubbery phase provides energy absorption.
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Chemical & Corrosion Resistance: Unaffected by battery acid and road salts.
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Good Paintability & Adhesion: Accepts paints and coatings for automotive body parts.
4. Industrial Applications
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Automotive Industry: Front and rear bumpers, dashboards, interior door trims, and battery cases.
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Household Appliances: Washing machine bodies and heavy-duty plastic containers.
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Industrial Packaging: Foldable crates and plastic pallets.
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Construction & Pipe Parts: Impact-resistant fittings.
5. Safety & Handling
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MSDS (Material Safety Data Sheet): The material is non-toxic and safe. Propylene and ethylene vapors are released at melt temperatures. The Arnico MSDS file must be obtained.
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Storage Conditions: Store in 25kg bags in a dry, cool warehouse.
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Personal Protective Equipment (PPE): Gloves for handling hot injection-molded parts.
6. Quality Assurance & COA
Arnico PPC shipments are accompanied by a Certificate of Analysis (COA) detailing the MFI and Izod Impact values at both 23°C and -20°C
