Shanghai SECCO PP S2040

Product Introduction

Shanghai SECCO PP S2040 is a high-performance Homopolymer Polypropylene (PP) injection molding grade material produced by Shanghai SECCO Petrochemical Co., Ltd. The product appears as translucent, regular cylindrical pellets, offering excellent flowability and balanced mechanical properties.

As a benchmark grade in the domestic thin-wall injection molding field, S2040 holds a significant position in industries such as disposable catering packaging, fast-moving consumer goods, household daily necessities, and thin-wall containers, thanks to its high melt flow rate of 36.0 g/10min, low density (0.90 g/cm³), and good thermal stability. Its outstanding processing efficiency and surface cleanliness make it an ideal choice for replacing traditional low-flow PP and reducing molding cycle costs.

Technical Data Sheet

Physical Properties

Mechanical Properties

Thermal Properties

The technical data sheet (TDS) of Shanghai SECCO PP S2040 material from Shanghai SECCO corporation, if there are differences, please refer to the official website of Shanghai SECCO.

Features & Advantages

• Ultra-high Flowability (MFI 36.0 g/10min) Significantly shortens the injection molding cycle, suitable for thin-walled (<0.5mm), long-flow, and complex geometric structures, remarkably reducing injection pressure and energy consumption.

• Excellent Balance of Rigidity and Ductility A flexural modulus of 1400 MPa provides good resistance to deformation, while a nominal tensile strain at break of 600% ensures that products are not easily brittle when subjected to impact.

• Good Thermal Stability and Heat Resistance The Vicat softening point (A₅₀) reaches 151°C and the heat deflection temperature (0.45 MPa) is 90°C, making it suitable for heat-resistant containers and high-temperature environment scenarios.

• High Purity and Clean Surface The base resin is odorless and free of impurities, suitable for producing light-colored or transparent products with strict requirements for hygiene and appearance.

• Compliant with Chinese National Standard (GB) Testing System All properties are tested using GB/T standards, facilitating direct comparison and acceptance for domestic customers and reducing technical barriers to trade.

Typical Applications

• Food Packaging and Thin-wall Containers Disposable meal boxes, fast-food cups, yogurt cups, ice cream lids, microwave trays, milk tea cups, etc. High flowability ensures rapid filling of thin-walled areas without short shots or flow marks.

• Household Daily Necessities Storage boxes, chairs, buckets, basins, clothes hangers, trash cans. Combines rigidity and drop impact resistance with high surface gloss for easy cleaning.

• Consumer Electronics and Toys Toy blocks, stationery boxes, appliance housings (e.g., electric fans, hair dryer bases). Easy to color, scratch-resistant, high molding precision, and capable of achieving complex snap-fit structures.

• Medical and Laboratory Consumables Disposable syringe barrels, centrifuge tubes, sample cups, pipette tip packaging. Low precipitation and low odor, meeting cleanroom molding requirements.

• Automotive Interior Parts Clips, air vent adjustment wheels, storage box liners, small dashboard parts. Good dimensional stability and heat aging resistance, adapting to temperature fluctuations inside the vehicle.

FAQ

Q1: What are the main differences between PP S2040 and other grades (such as S1003, K8003)? How to select?

A:

• S2040: High-flow homopolymer PP (MFI ≈ 36), suitable for thin-wall fast injection molding; products are more rigid with high surface gloss.

• S1003: Low-flow homopolymer PP for raffia (MFI ≈ 3), specialized for extrusion, raffia, woven bags, and ropes.

• K8003: High-impact copolymer PP (containing ethylene-propylene rubber), excellent low-temperature toughness but lower flowability (MFI ≈ 2-3), suitable for impact-resistant parts like car bumpers and children’s toys.

Selection Advice: If your product requires fast molding, thin-wall design, and high rigidity, choose S2040; if it requires ultra-high impact toughness or low-temperature use, choose K8003.

Q2: Can PP S2040 be used for food contact products? What compliance certifications are needed?

A: S2040 homopolymer polypropylene base resin complies with China GB 4806.6-2016 “National Food Safety Standard – Food Contact Plastic Resins” and US FDA 21 CFR 177.1520 requirements for polypropylene. However, the food contact compliance of the final product depends on:

• Whether color masters, additives, and mold release agents used during processing are compliant;

• Production environment and hygiene conditions. It is recommended that customers perform Overall Migration and Specific Migration tests on the finished product (if applicable) and request a resin compliance statement from Shanghai SECCO.

Q3: What are the recommended processing parameters for PP S2040? What defects should be noted?

A:

• Barrel Temperature: 190 – 230°C (increasing from hopper to nozzle; typical setting: rear 190°C, middle 210°C, front 220°C, nozzle 220°C).

• Mold Temperature: 20 – 50°C (higher mold temp improves surface gloss but extends the cycle; lower mold temp improves demolding speed).

• Injection Pressure: 60 – 100 MPa (adjust based on product wall thickness).

• Precautions:

  • S2040 flows extremely fast and is prone to flashing; ensure tight mold parting lines to reduce clamping force requirements.

  • Homopolymer PP has a shrinkage rate of approximately 1.5% – 2.0%, which easily leads to sink marks; it is recommended to increase holding pressure and time.

  • Drying conditions: Usually not required, but if the packaging is damaged or stored in a damp environment, it can be dried at 80°C for 1-2 hours.