Overview
Red Bakelite Rod is a thermosetting phenolic resin product, historically among the first synthetic plastics. Its distinctive red color and robust properties make it a staple in electrical and industrial applications. Unlike thermoplastics, Bakelite retains its shape under heat, making it ideal for high-temperature environments. Bakelite rods are manufactured through compression molding of phenol-formaldehyde resin, resulting in a cross-linked polymer structure. This process ensures exceptional dimensional stability and resistance to deformation, even under mechanical stress or electrical loads.
Physical and Chemical Properties
Red Bakelite Rod exhibits high dielectric strength (typically 10–30 kV/mm), making it suitable for insulating live electrical components. Its thermal resistance allows continuous operation at temperatures up to 120°C, with short-term tolerance exceeding 200°C. The material is chemically inert to oils, acids, and solvents, though prolonged exposure to alkalis may cause surface degradation. Its density and rigidity provide excellent machining characteristics, enabling precise cutting, drilling, or turning for custom parts.
Main Applications
Primarily used in electrical engineering, Bakelite rods serve as insulating supports in circuit breakers, terminal blocks, and transformer components. Their non-conductive nature prevents arc tracking in high-voltage equipment. Industrial applications include jigs, fixtures, and tool handles where heat resistance is critical. The rods are also machined into gears, bushings, and wear plates for low-friction mechanical systems. Specialty grades may incorporate additives for improved flame retardancy or UV stability.
Safety and Storage
While Bakelite is generally safe when intact, machining generates dust that may irritate respiratory systems. Use local exhaust ventilation and PPE during fabrication. Avoid thermal degradation, which can release formaldehyde. Store rods horizontally on flat racks to prevent warping. Protect from moisture absorption, which marginally reduces insulation properties. Shelf life is virtually unlimited if stored properly in original packaging.
B2B Procurement Guide
Industrial buyers should specify diameter tolerances (typically ±0.1 mm) and length customization options. Key procurement metrics include dielectric strength (ASTM D149), thermal index (UL 746B), and flammability ratings (UL 94). Bulk orders (100+ kg) often qualify for 10–15% discounts. Verify supplier certifications for RoHS compliance if required. For high-voltage applications, request mill test reports validating insulation properties. Lead times vary from 1–4 weeks depending on diameter/length combinations.
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