Product Overview & Key Features
Sinopec Shanghai Petrochemical M250E PP is a high-quality polypropylene (PP) random copolymer (or premium general-purpose polypropylene grade) manufactured by China Petrochemical Corporation (Sinopec Shanghai Petrochemical Company). This material features an excellent balance of physical and mechanical properties, high cleanliness, and stable processing flowability, serving as a premium virgin resin raw material suitable for industrial-scale mass production.
Core Performance Advantages:
- Superior Mechanical and Structural Performance: Features balanced tensile yield strength (27 MPa) and a moderate flexural modulus (0.90 GPa), providing solid structural support while maintaining good toughness.
- Outstanding Optical and Cleanliness Performance: The yellowness index is strictly controlled at a low level of ≤ 1, with high surface cleanliness (6 to 10 rating), ensuring visual transparency and aesthetic quality in end-use products.
- Exceptional Impact Resistance: Under standard room-temperature testing conditions (23°C, V-notched), the Charpy impact strength reaches 40 J/m, effectively enhancing drop and mechanical impact resistance in molded parts.
Supported Mainstream Processing Technologies: Specifically designed for standard injection molding and related thermoplastic processing techniques, exhibiting excellent mold-filling performance and thermal stability.
Technical Specifications
Physical Properties
| Property | Test Condition | Value | Unit | Test Method |
| Cleanliness | — | 6 to 10 | None | Internal Method |
| Melt Mass-Flow Rate (MFR) | — | 2.5 | g/10min | Internal Method |
Mechanical Properties
| Property | Test Condition | Value | Unit | Test Method |
| Tensile Stress at Yield | — | 27 | MPa | Internal Method |
| Flexural Modulus | — | 0.9 | GPa | Internal Method |
Optical Properties
| Property | Test Condition | Value | Unit | Test Method |
| Yellowness Index | — | ≤ 1 | None | Internal Method |
Other Properties
| Property | Test Condition | Value | Unit | Test Method |
| Charpy Impact Strength | 23°C, V-notched | 40 | J/m | Internal Method |
Disclaimer: The technical specifications for Sinopec Shanghai Petrochemical M250E PP presented herein are derived from data issued by Sinopec Shanghai Petrochemical or certified third-party testing institutions. While we have made every effort to ensure the accuracy of the information provided, we assume no liability for any consequences arising from the use of M250E PP based on these data. Given the variables involved in processing conditions, we strongly recommend conducting thorough trials of M250E PP under your specific operational environment prior to final material selection.
Applications & Processing Guidelines
Recommended Application Scenarios:
- Consumer Electronics & Daily Commodities: Suitable for manufacturing daily plastic goods and housing components that require specific standards in surface cleanliness and impact resistance.
- Industrial & Packaging Components: Applicable to various small-to-medium structural parts, turnover boxes, thin-walled containers, and industrial components requiring a balance of toughness and rigidity.
Operational Processing Key Points & Suggestions:
- Melt Flow Characteristics: This grade features an MFR of 2.5 g/10min, offering a balanced molecular weight distribution and melt strength suited for conventional injection molding, ensuring smooth cavity filling in complex molds.
- Drying and Temperature Control: While PP resin inherently has extremely low moisture absorption, pre-drying (e.g., 70 to 80 °C for 1 to 2 hours) is recommended prior to processing if stored in high-humidity environments or rainy seasons to eliminate surface defects caused by trace moisture.
- Injection Parameter Optimization: Barrel temperature zones and injection speeds should be rationally configured according to specific mold runner designs and wall thicknesses to avoid local degradation caused by excessive shear heat.
Logistics, Packaging & Compliance
- Packaging Specifications: Supplied in standard export moisture-proof polypropylene woven bags or composite paper bags with a net weight of 25 kg/bag, ensuring adequate moisture and damage protection during long-distance maritime and land transport.
- Hazardous Material Classification: Classified as a non-hazardous material, remaining safe and stable under conventional storage and transportation conditions.
- Lead Time and Logistics: Regular spot orders can be scheduled for dispatch within standard lead times upon confirmation; flexible full container load (FCL) or less than container load (LCL) sea and land shipping options are supported to accommodate the global supply chain schedules of TaiKuo customers.
- Compliance Certification & Environmental Declarations: Each shipment can be accompanied by the original manufacturer’s Technical Data Sheet (TDS), Material Safety Data Sheet (MSDS), and Certificate of Analysis (COA). Compliant with international trade environmental regulations, supporting RoHS directives and REACH compliance, aligning with global industrial green development (ESG) standards.
FAQs
Q1: Is high-temperature drying mandatory for Sinopec Shanghai Petrochemical M250E PP prior to injection molding?
A: Polypropylene (PP) is a crystalline polyolefin with very low moisture absorption under normal conditions. If the resin remains in its tightly sealed original packaging within a dry storage environment, it can typically be processed directly. However, after opening in high-humidity storage environments or following long-distance ocean shipping, a brief pre-drying session at 70 to 80 °C for 1 to 2 hours is recommended to completely prevent surface water marks or silver streaks on molded products.
Q2: With an MFR of 2.5 g/10min, what type of injection molding operations is M250E best suited for?
A: An MFR of 2.5 g/10min indicates that the material possesses a relatively higher molecular weight and favorable melt strength, making it ideally suited for manufacturing medium-to-thick-walled molded parts that demand mechanical strength, impact resistance (such as a 23°C notched impact strength of 40 J/m), and structural toughness, rather than ultra-high-speed, ultra-thin-wall applications.
Q3: How can the quality and official compliance documents of this raw material batch be verified?
A: TaiKuo strictly implements original manufacturer traceability standards. For every shipment, a Certificate of Analysis (COA) issued by Sinopec or an authorized third-party laboratory, along with the TDS and MSDS, can be provided to verify that batch specifications, cleanliness, and physical properties align seamlessly, fulfilling enterprise clients’ compliance auditing and quality traceability requirements.
