Overview
High-Density Polyethylene (HDPE) produced by Sibur, one of Russia’s largest petrochemical companies, is a thermoplastic polymer renowned for its durability and versatility. It is synthesized through the polymerization of ethylene under controlled conditions, resulting in a linear structure with minimal branching. This grants HDPE superior strength-to-density ratios compared to other polyethylene variants. Sibur’s HDPE is widely used in industries ranging from packaging to construction due to its adaptability to extrusion, injection molding, and blow molding processes. The company’s production facilities adhere to international quality standards, ensuring consistent material properties for industrial buyers.
Physical and Chemical Properties
Sibur’s HDPE exhibits a density range of 0.93–0.97 g/cm³, making it lighter than water yet mechanically robust. Its crystalline structure contributes to high tensile strength (20–37 MPa) and impact resistance, even at low temperatures. The material’s chemical inertness allows it to withstand acids, alkalis, and organic solvents, though it is susceptible to oxidative degradation at high temperatures. Thermal properties include a melting point of 120–140°C and a Vicat softening point of around 125°C, varying by grade. UV stabilization additives are often incorporated for outdoor applications. HDPE’s low moisture absorption (<0.01% over 24 hours) ensures dimensional stability in humid environments.
Main Applications
Sibur’s HDPE is a cornerstone material for rigid packaging, including bottles, caps, and industrial containers, owing to its FDA-compliance for food contact. In infrastructure, it is extruded into corrosion-resistant pipes for water and gas distribution, as well as geomembranes for landfill liners. The automotive sector utilizes HDPE for fuel tanks, bumpers, and interior panels due to its lightweight and impact resistance. Consumer goods like toys, household items, and furniture also leverage its moldability and safety. Specialized grades are employed in 3D printing filaments and medical device components.
Safety and Storage
While HDPE is generally non-toxic and recyclable (resin ID code 2), processing at high temperatures may release volatile organic compounds (VOCs). Adequate ventilation and personal protective equipment (PPE) such as gloves and goggles are recommended during machining or welding. Storage guidelines include keeping the material in original packaging or sealed containers to prevent contamination. Pellets should be stored below 40°C and away from open flames or strong oxidizers. Prolonged exposure to UV radiation without stabilizers may lead to surface cracking.
B2B Procurement Guide
When procuring Sibur’s HDPE, specify key parameters such as melt flow index (MFI), which affects processability (e.g., 0.1–50 g/10 min for injection molding vs. extrusion). Density grades range from 0.941–0.965 g/cm³ for high-stiffness applications. Bulk buyers should inquire about customized additives (e.g., antioxidants, colorants) and negotiate pricing based on annual volumes. Verify certificates like ISO 9001 and REACH compliance. Logistics considerations include pellet form for ease of transport and moisture-resistant packaging for long shipments.
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