PE Wax (Polyethylene Wax)
Polyethylene wax (PE wax) is a low-molecular-weight polyethylene material used as a processing aid, lubricant, dispersant, and surface modifier in many industrial applications.
Key Properties
* Low viscosity when molten
* Good hardness and abrasion resistance
* High melting point compared with many natural waxes (typically around 90–140°C, depending on grade)
* Chemical resistance
* Water repellency
* Good compatibility with various polymers and additives
| Property | Typical Range |
|---|---|
| Melting Point | 90-140°C |
| Density | 0.91-0.98 g/cm³ |
| Form | Flakes, powder, granules, pastilles |
| Color | White to off-white |
Applications
- Plastics processing: Internal and external lubricant in PVC, masterbatches, and polymer compounding.
- Paints and coatings: Improves scratch resistance, slip, and matting.
- Printing inks: Enhances rub resistance and surface properties.
- Adhesives: Adjusts viscosity and improves performance.
- Rubber processing: Processing aid and release agent.
- Textiles and paper: Surface treatment and water repellency.
Advantages in PVC Processing
PE wax is widely used in PVC formulations because it:- Reduces friction between the polymer melt and processing equipment
- Improves melt flow
- Prevents sticking to metal surfaces.
- Helps achieve smoother surface finish on finished products.
Common Types
- Low-density PE wax – softer, more flexible.
- High-density PE wax – harder, better abrasion resistance.
- Oxidized PE wax – contains oxygen-containing functional groups, improving compatibility with water-based systems and pigments.
- Micronized PE wax – finely powdered for coatings and inks.
