Overview
Polyethylene wax paste is a semi-solid form of polyethylene wax, modified for ease of application in industrial processes. It is derived from the polymerization of ethylene and is valued for its ability to enhance product performance in coatings, inks, and plastics. The paste form allows for better dispersion and integration into formulations compared to solid waxes. Its versatility stems from its chemical inertness, low molecular weight, and ability to act as a lubricant or release agent. Manufacturers often customize polyethylene wax paste by altering its molecular weight or adding emulsifiers to suit specific applications.
Physical and Chemical Properties
Polyethylene wax paste exhibits a smooth, homogeneous texture with a melting point range of 100–120°C, making it suitable for high-temperature processes. Its insolubility in water and solubility in organic solvents like toluene and xylene enable its use in solvent-based formulations. Key properties include high thermal stability, which prevents degradation during processing, and low viscosity, which aids in mixing and application. The paste's density (0.91–0.96 g/cm³) and molecular weight (typically 2,000–5,000 g/mol) influence its performance in end products, such as gloss enhancement in coatings or slip resistance in plastics.
Main Applications
In the coatings industry, polyethylene wax paste improves scratch resistance and provides a matte or glossy finish, depending on the formulation. It is also a key additive in printing inks to reduce friction and enhance pigment dispersion. For plastics, the paste acts as a processing aid, reducing melt viscosity and improving mold release. In adhesives, it increases tack and flexibility. The rubber industry uses it to prevent sticking during storage and processing. Its non-toxic nature makes it suitable for food-contact materials when compliant with regulatory standards.
Safety and Storage
While polyethylene wax paste is generally non-toxic, prolonged skin contact may cause mild irritation. Use gloves and eye protection when handling. Ensure adequate ventilation to avoid inhalation of dust or vapors during heating. Store the paste in tightly sealed containers at temperatures below 30°C to prevent separation or drying. Avoid exposure to direct sunlight or open flames, as the material is flammable when heated. Shelf life is typically 12–24 months under proper conditions.
B2B Procurement Guide
When sourcing polyethylene wax paste, prioritize suppliers who provide technical data sheets (TDS) and certificates of analysis (CoA) to verify purity and consistency. Key specifications to check include melting point, viscosity, and particle size distribution. Bulk buyers should negotiate pricing based on volume, with discounts commonly available for orders exceeding 1,000 kg. Consider regional suppliers to minimize shipping costs and lead times. Test samples in your specific application before large-scale procurement to ensure compatibility.
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