Coordination polymer based on picolinic acid as well as preparation method and application of coordination polymer

The invention discloses a coordination polymer based on picolinic acid as well as a preparation method and application thereof, and relates to the technical field of flame-retardant materials. The chemical formula of the coordination polymer based on pyridine carboxylic acid is [Zn2 (C6H4NO2) 2 (C7H5N4) 2] n, crystal data are as follows: the crystal belongs to a monoclinic system, the space group is C2/c, the cell parameters are as follows: a is equal to 17.472 (2), b is equal to 10.214 (2), c is equal to 16.420 (2), beta is equal to 118.254 (4), V is equal to 2558.5 (4) 3, Dc is equal to 1.704 g/cm < 3 >, Z is equal to 8, F (000) is equal to 1336, final deviation factors R1 are equal to 0.0453, and wR2 is equal to 0.0854. The coordination polymer is environment-friendly and good in flame retardance, and when the coordination polymer is used as a flame retardant, polypropylene can have high flame retardance and good mechanical properties only by adding a small amount of the flame retardant. 一种基于吡啶羧酸的配位聚合物及其制备