Why choose nano calcium carbonate as filler of pvc pipe and profile?
The difference between nano calcium carbonate and ordinary calcium carbonate
Item nano CaCO3 Precipitated CaCO3 Natural CaCO3
Primary particle size 1-100nm 1-10μm > 1μm
Particle shape controllable spindle shape irregular, uncontrollable
Surface modification Yes No No
Dispersity Good dispersity Poor dispersity Very poor dispersity
Function Functional filler Filler Filler
Practice has proved that PVC pipe and profile filled with nano calcium carbonate, the impact strength and tensile strength was significantly improved, the appearance of product and processing performance has also been improved.