Nylon 11/polyvinylidene fluoride composition and preparation method thereof

The invention discloses a nylon 11/polyvinylidene fluoride composition material. The composition is obtained by melting and blending nylon 11, polyvinylidene fluoride and ionic liquid in a melting and mixing apparatus. The composition comprises the following raw materials in percentage by weight: 36-58% of nylon 11, 36-58% of polyvinylidene fluoride and 2-10% of ionic liquid, wherein the ionic liquid is one or more of 1-ethyl-3-methylimidazolium tri(fluorosulfonyl)imide, 1-butyl-3-methylimidazolium tri(fluorosulfonyl)imide, 1-ethyl-3-methylimidazolium hexafluorophosphate and 1-butyl-3-methylimidazolium hexafluorophosphate. The nylon 11/polyvinylidene fluoride composition material provided by the invention has excellent shock resistance and is higher in tensile strength, thereby meeting the performance and use requirements of the structural material; and meanwhile, based on excellent piezoelectric and dielectric properties of the nylon 11 and the polyvinylidene fluoride, the nylon 11/polyvinylidene fluoride co