Colloidal Silica Processing Aid Slashes Molding Cycle Times

摘要

Ultra-fine synthetic silica particles have been shown in laboratory and commercial field trials to reduce injection molding cycle times by 20% to 30% in polypropylene, filled and unfilled nylon, PBT, and ABS. This processing advantage is accompanied by retention and even improvement of key physical properties. Other reported benefits are improved color dispersion and reduced flow lines and surface defects. What's more, the silica additive is said to mix easily with resin pellets in a blender, so melt pre-compounding is not required.