About  lubricants

lubricants is to decrease the friction between plastic materials and processing machinery as well as the friction between the molecules of plastic materials, so as to improve the processing properties of plastics and improve the performance of products.

Fatty Acid, Amides and Esters Based Lubricants
Fatty acids, fatty amides, esters are the 'classic' lubricants, derived from natural oils and fats and act by migrating to the surface. According to type, they can improve mold release, melt flow, lubricity and scratch/scuff resistance and reduce static build-up and wear. They have been developed mainly alongside the PVC industry.

Primary Amides
These include stearamide, oleamide and erucamide. These are used as slip and anti-blocking agents in polyolefins and other polymers, their selection and concentration depending on the degree of lubricity required. Generally, stearamides give the best anti-block performance, oleamide and erucamides the best slip properties. Erucamide tends to be preferred for LDPE, LLDPE and PP films, with good oxidative stability and low volatility. It also offers good release properties for injection molding.

Secondary Amides
Secondary amides include oleyl palmitamide and stearyl erucamide. These have good thermal stability, showing no appreciable breakdown below about 350°C, and are therefore suitable for lubricants for engineering/technical plastics with processing temperatures above 300°C. Secondary bis-amides are used as lubricants in styrenics and ABS, assisting in flow, mold release and anti-caking properties. They are also used in PVC formulations as lubricants and anti-blocking agents in film and sheet.