Product Spotlight: Automotive-Grade High-Performance PP-CP323-TD20
1. Product Positioning
PP-CP323-TD20 is a high-performance, mineral-filled, and impact-modified polypropylene compound specifically engineered for the automotive industry. It utilizes a Super High-Flow Copolymer Polypropylene (CP323) base, reinforced with 20% fine talc (TD20) and specialized elastomers. This material is designed to meet the rigorous demands of "thin-wall" design while maintaining exceptional dimensional stability and impact resistance.
2. Core Value Propositions
Superior Flowability (High MFR): Optimized for large-scale, complex, and thin-walled injection molding. It reduces injection pressure, lowers energy consumption, and significantly shortens cycle times.
Balanced Rigidity & Toughness: The 20% talc reinforcement provides high flexural modulus (stiffness), while the copolymer matrix ensures excellent impact strength even at sub-zero temperatures (low-temperature ductility).
Exceptional Dimensional Stability: The mineral filler effectively suppresses the natural shrinkage of PP, preventing warpage and ensuring tight tolerances for precision-fit assemblies.
Low VOC & Low Odor: Formulated to meet stringent automotive cabin air quality standards (VOC emissions), making it ideal for interior structural components.
High-Quality Surface Finish: Offers excellent grain replication (leather or matte textures) and moderate surface hardness for improved scratch resistance.
3. Technical Data Sheet (Typical Properties)
| Property | Test Method | Unit | Typical Value |
| Talc Content | -- | % | 20 |
| Density | ISO 1183 | g/cm³ | 1.04 - 1.06 |
| Melt Flow Rate (MFR) | ISO 1133 (230°C/2.16kg) | g/10min | 15 - 25 |
| Tensile Strength | ISO 527 | MPa | 22 - 28 |
| Flexural Modulus | ISO 178 | MPa | 2,000 - 2,400 |
| Charpy Notched Impact | ISO 179 (23°C) | kJ/m² | 30 - 45 |
| Heat Deflection Temp (HDT) | ISO 75 (0.45 MPa) | °C | ≥ 115 |
4. Key Automotive Applications
Lower Instrument Panels:
Function: Supports the glove box, wiring harnesses, and secondary controls.
Benefit: High flow ensures full filling of large molds; TD20 prevents thermal deformation during summer heat.
Door Panel Carriers:
Function: The primary structural frame of the interior door trim.
Benefit: Provides crash-safety reliability; ensures the panel won't shatter into sharp fragments during a side impact.
Center Consoles:
Function: Houses the gear shifter, cup holders, and armrest supports.
Benefit: High rigidity prevents "squeak and rattle" noises during driving and supports the weight of the occupants.
Pillar Trims (A/B/C Pillars):
Function: Covers the vehicle's structural pillars.
Benefit: Ensures safe deployment of side curtain airbags—the material must be tough enough to flip open without breaking.
5. Processing Guide
Pre-drying: While PP has low moisture absorption, the talc filler can hold surface moisture. Drying at 80°C for 2 hours is recommended to prevent surface silver streaks or "splay."
Melt Temperature: Recommended range is 200°C - 240°C. Avoid excessive heat to maintain the integrity of the elastomer system.
Mold Temperature: 40°C - 70°C. Proper mold temperature improves surface aesthetics and reduces internal stresses.
Injection Speed: Moderate to high speeds are recommended to take full advantage of the high-flow base for thin-walled sections.
