Internal Lubricant Particles
Overview
Internal lubricant particles are additives designed to reduce friction between polymer chains during processing. They are widely used in the plastics industry to improve flow characteristics, reduce energy consumption, and enhance product surface quality. These particles are typically composed of fatty acid derivatives, waxes, or metallic stearates. Their primary function is to modify the interfacial properties of polymers, making them indispensable in high-speed extrusion and injection molding processes.
Physical and Chemical Properties
Internal lubricant particles exhibit low volatility and high thermal stability, making them suitable for high-temperature processing. Their particle size typically ranges from 10 to 100 micrometers, ensuring uniform dispersion in the polymer matrix. Chemically, these additives are inert and do not react with the base polymer. They maintain their lubricating properties across a wide temperature range, from room temperature up to 300°C in some formulations.
Main Applications
The primary application of internal lubricant particles is in plastic manufacturing processes. They are particularly valuable in PVC processing, where they prevent sticking to metal surfaces and improve melt flow. Other applications include use in engineering plastics, where they help achieve precise dimensional stability in molded parts. They are also used in masterbatch formulations to enhance processing efficiency and reduce equipment wear.
Safety and Storage
While generally considered safe, internal lubricant particles should be handled with standard industrial precautions. Proper ventilation is recommended when handling powders to minimize dust exposure. Storage should be in sealed containers protected from moisture. Shelf life is typically 12-24 months when stored under recommended conditions. Incompatibility with strong oxidizing agents should be noted.
B2B Procurement Guide
When procuring internal lubricant particles, consider the specific polymer system and processing conditions. Key selection factors include thermal stability range, compatibility with other additives, and required concentration levels. For bulk purchases, request technical data sheets and samples for testing. Reliable suppliers should provide certification of analysis and material safety data sheets. Consider long-term supply agreements for consistent quality and pricing.
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