Internal Lubricant

About Internal Lubricant

Internal lubricants like Stearic Acid are essential in PVC processing, particularly in pipe extrusion. They reduce friction within the polymer melt, improve flow characteristics, and minimize shear stress during high-temperature processing. Unlike external lubricants, internal lubricants act within the polymer matrix, enhancing filler dispersion and ensuring uniform blending. This prevents scorching, stabilizes processing, and provides superior dimensional accuracy in PVC pipes. By improving compatibility of ingredients and reducing internal resistance, Stearic Acid as an internal lubricant delivers smoother extrusion, better mechanical strength, and a flawless surface finish. It ensures manufacturers can achieve high-quality, durable PVC pipes that perform consistently in water supply, electrical conduits, and other infrastructure applications.