Overview
White polyethylene rod is a semi-crystalline thermoplastic made through polymerization of ethylene monomers. Available in high-density (HDPE) and low-density (LDPE) variants, it offers excellent mechanical properties for machining into custom parts. As one of the most widely used plastic materials, polyethylene rods are valued for their balance of strength, chemical resistance, and cost-effectiveness across industries. The white coloration provides a clean aesthetic while maintaining material properties.
Physical and Chemical Properties
Polyethylene rods exhibit low friction coefficients (0.1-0.3) and high impact strength even at low temperatures (-50°C). Their crystalline structure provides dimensional stability with moisture absorption below 0.01%. Chemically, PE rods resist acids, alkalis, and most organic solvents except strong oxidizing agents. UV stabilizers are often added for outdoor applications. The material has good electrical insulation properties with a dielectric strength of 20-28 kV/mm.
Main Applications
In industrial settings, white PE rods are machined into bushings, rollers, and wear strips for material handling equipment. The food industry uses FDA-compliant grades for cutting boards and processing components. Other common uses include chemical tank liners, laboratory equipment, and marine applications where corrosion resistance is critical. The material's machinability allows for custom fabrication of prototypes and replacement parts across multiple sectors.
Safety and Storage
While non-toxic in solid form, molten polyethylene can release volatile compounds above 200°C. Adequate ventilation is required during hot knife cutting or welding operations. Rods should be stored horizontally on racks to prevent bending. Prolonged UV exposure may cause surface degradation, so opaque packaging is recommended for long-term storage. Keep away from heat sources and oxidizing agents.
B2B Procurement Guide
When sourcing white polyethylene rods, specify the required grade (HDPE for rigidity, LDPE for flexibility), diameter tolerance (±0.1mm typical), and any certifications (FDA, NSF). For bulk purchases, verify the supplier's quality control measures for consistency in density and coloration. Sample testing for your specific application is advisable, as additives may affect performance. Consider regional suppliers to minimize shipping costs for these low-density materials.
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