Transparent anti-static polyvinylidene fluoride piezoelectric material and preparation method thereof

The invention relates to a transparent anti-static polyvinylidene fluoride piezoelectric material and a preparation method thereof. The filler is very difficult to uniformly disperse by adding carbon nano-tubes, graphene or zinc oxide to PVDF (Polyvinylidene Fluoride) material in the prior art; and the material is directly transmitted to be conductive from insulating, and is not attractive. The polyvinylidene fluoride piezoelectric material is a mixture of polyvinylidene fluoride and ionic liquid. The preparation method of the transparent anti-static polyvinylidene fluoride piezoelectric material comprises the following steps of: drying the polyvinylidene fluoride and the ionic liquid for 24 hours to 48 hours at 80 DEG C to 110 DEG C in a vacuum environment; adding the dried polyvinylidene fluoride and ionic liquid in a mass ratio of 100:(0.5-40) to a fusion smelting device for melting-blending at 180 DEG C to 200 DEG C to obtain a mixture; and discharging the mixture from the melting-blending device, cooling the mixture to normal temperature and crystallizing the cooled mixture to obtain the polyvinylidene fluoride piezoelectric material. The polyvinylidene fluoride piezoelectric material disclosed by the invention has good antistatic property, good piezoelectricity and excellent transparency. According to the preparation method of the polyvinylidene fluoride piezoelectric material disclosed by the invention, the normal melting-blending device is only needed to be used, and the industrial preparation is simple.