Reducing the density of plastics means that the relative density of the plastics is reduced by appropriate means to suit the needs of different applications. The methods for reducing the density of plastics include foaming modification, adding lightweight fillers, and blending lightweight resins.
1. Foaming modification
Foam molding of plastic products is the most effective way to reduce their density. The addition of light addition materials and blending of light resin can only reduce the density by a small amount, and the reduction is generally only about 50%, and the lowest relative density can only reach about 0.5.
Plastic foamed products vary widely in density and have a relative density of 10-3. At present, our common PVC foaming products include PVC foam board, PVC foam sole, PVC foam tube, PVC foam profile, PVC wood plastic foam product (sliding door panel, door sleeve line, wall panel, etc.), PVC hair Soaking mats, etc.
2. Blending lightweight materials
Add low-density plastic blends, such as PE, PP, CPE, ABS, MBS; there is also a lightweight filler: wood flour, which is fine fiber of wood, very light. But there are certain limitations, according to Use different methods yourself.