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In PVC (polyvinyl chloride) production, both Polyethylene wax and Fischer-Tropsch wax can be used as lubricants and external lubricants. However, there are some key differences between the two:Composition: Polyethylene wax is a synthetic wax derived from ethylene gas through a polymerization process. It consists of long-chain hydrocarbon molecules with a high molecular weight. Fischer-Tropsch wax, on the other hand, is derived from the Fischer-Tropsch synthesis, which converts carbon monoxide and hydrogen into hydrocarbons. It is a synthetic wax composed of straight-chain hydrocarbons.Molecular Structure: Polyethylene wax has a linear molecular structure, with the carbon atoms forming a continuous chain. This gives it a higher melting point and viscosity compared to Fischer-Tropsch wax. Fischer-Tropsch wax has a more branched molecular structure, which results in a lower melting point and lower viscosity.Properties: Polyethylene wax offers excellent hardness, heat resistance, and lubricity. It helps to reduce friction, improve flow properties, and enhance the release of PVC from molds during processing. Fischer-Tropsch wax, on the other hand, provides a good balance of hardness, flexibility, and low-temperature properties. It improves the processing of PVC by reducing stickiness and enhancing lubrication.Compatibility: Both Polyethylene wax and Fischer-Tropsch wax are compatible with PVC and other thermoplastics. However, due to their different molecular structures, they may exhibit slightly different compatibility properties. Polyethylene wax is typically more compatible with PVC and is often used as an internal lubricant. Fischer-Tropsch wax is often used as an external lubricant in PVC production.Cost: The cost of Polyethylene wax is usually lower compared to Fischer-Tropsch wax. This cost difference can be a determining factor in choosing the appropriate wax for PVC production, considering other required properties.In summary, the choice between Polyethylene wax and Fischer-Tropsch wax in PVC production depends on factors such as the desired properties, processing requirements, compatibility, and cost considerations. Both waxes have their own advantages and can be used effectively in PVC processing to improve lubrication and other performance aspects.