Master batch capable of enhancing properties and melt strength of condensation polymer and preparation method thereof

The invention provides a master batch capable of enhancing properties and melt strength of condensation polymer. The master batch is mainly composed of the applied condensation polymer or polymers of the same kind, and a set-structure polyfunctional group compound performing grafting function, which are bonded together through the chemical bond to become the functionalized master batch. In the product preparation process, the master batch is added into the raw materials according to the demands of the product for degree of grafting, so that the condensation polymer raw material can directly achieve the melt strength satisfying the requirements in the product working process, thereby obtaining the high-quality product. The applicability of the raw material (including recovered raw material) is not limited completely, and almost does not have the problem in compatibility in the working process. The master batch can be widely used as a functionalized master batch for nylon, polyester, polylactic acid and other materials, so that the universal condensation polymer, including the recovered material, can be used for preparing the high-performance foamed, melt spinning and film products.