Nanometer elastomer fiber product and preparation method thereof

The invention relates to a nano-elastomer fiber product which comprises a matrix material and a small amount of nano-elastomer fiber material dispersed in the matrix material, and the nano-elastomer fiber material is a thermoplastic elastomer; the melting point of the nano elastomer fiber material is higher than that of the base material; the weight part ratio of the nano elastomer material to the base material is (0.2-30): (70-99.8); the diameter of the nano elastomer fiber is smaller than or equal to 500 nm, and the length-diameter ratio is larger than or equal to 50. The raw material selection principle of the nano-elastomer fiber product is novel, a hard segment in a crystalline elastomer such as a thermoplastic polyester elastomer can form a physical cross-linked structure after crystallization, the nano-fiber structure can be kept at the temperature below the melting point of the crystallization segment in subsequent processing, and by matching with the simple and feasible preparation method, the nano-e