Introduction to the main types of lubricants
Lubricant is an additive that can improve the flowability of plastic processing. Its structure generally consists of two parts: non polar long chains and polar groups. In addition to improving melt flowability, it also has functions such as promoting melting, facilitating demolding, preventing static electricity, and preventing adhesion. Lubricants are divided into three types, including fatty acid amide lubricants, hydrocarbon lubricants, and siloxane lubricants. Today in this article, Sainuo takes you to learn about fatty acid amide lubricants.
1. Fatty acid amide lubricants
(1) Stearic acid amide: White or light yellow brown powder, relative density 0.96, molecular weight 283, melting point 98-103 ℃, insoluble in water, soluble in hot ethanol, chloroform, and ether. It has excellent external lubrication effect, film detachment, transparency, dispersibility, glossiness, electrical insulation, and is non-toxic. It is a resin processing lubricant for PVC, PS, urea formaldehyde, and other resins. It