High-toughness PA66 material and preparation method thereof

The invention belongs to the technical field of high polymer materials, and discloses a high-toughness PA66 material and a preparation method thereof. The high-toughness PA66 material comprises PA66, an inorganic nucleating agent and a polymer nucleating agent, wherein the polymer nucleating agent is selected from nylon 6T, nylon 9T, nylon 22 and nylon 46, the inorganic nucleating agent is selected from tetragonal zinc oxide whisker, calcium sulfate whisker, magnesium sulfate whisker and magnesium oxide whisker, the inorganic nucleating agent is subjected to surface treatment by a coupling agent, and the surface treatment method comprises the following steps: dissolving a coupling agent in an ethanol water solution, dropwise adding into the inorganic nucleating agent, uniformly mixing, and then drying. According to the invention, a polymer nucleating agent and an inorganic nucleating agent are compounded for use, the synergistic effect among different nucleating agents is utilized, the high-toughness PA66 mat