The invention provides a negative
ion powerful releasing and
toughening PVC plate and a preparation method thereof, and belongs to the technical field of building decoration materials. The negative
ion powerful releasing and
toughening PVC plate comprises a PVC core layer and a PVC attached layer. The PVC core layer comprises PVC resin,
calcium carbonate, a stabilizer, active
zeolite powder,
antimony trioxide, chlorinated paraffin and a
lubricant. The PVC attached layer comprises PVC resin,
calcium carbonate, a stabilizer, active
tourmaline powder,
carbon nanotube-
elastomer base
powder and a
lubricant. The active
tourmaline powder in the PVC attached layer has the function of releasing negative ions, the released negative ions can adsorb and degrade
formaldehyde in the environment, and the effect of purifying air is achieved. The carbon nano-
elastomer base powder and the active
tourmaline powder in the PVC attachment layer have a synergistic effect, so that the negative
ion release capability of the PVC plate can be effectively improved, and meanwhile, the carbon nano-
elastomer base powder, the PVC core layer and the PVC attachment layer are prepared through co-
extrusion, so that the negative ion strong release is maintained, and the
toughness,
flame retardance and other use performances of the toughened PVC plate are also maintained.