The invention relates to a
polymer material for quickly repairing cracks of an
asphalt pavement and a preparation method thereof. The
polymer material is prepared by mixing two components A and B and quickly solidifying the mixed components, wherein the component A comprises the following ingredients in parts by weight: 41-60 parts of polyoxypropylene
diol N220, 25-20 parts of polyoxypropylene
diol N210, 1-0.4 part of
carbon black, 2-1 part of a catalyst, 20.5-15.5 parts of
glycerol triacetate, 8-1 part of a chain
extender, 2 parts of a latent curing agent, 0.5-0.1 part of a BYK-535 defoaming agent and 50-80 parts of water absorbent microcapsules; the component B is 100 parts of polyether urethane prepolymers; mixing the component A with the component B according to the
mass ratio of (1.5-1.8) : 1 to solidify so as to obtain the
polymer material for quickly repairing the cracks of the
asphalt pavement. The non-flowing time of the prepared polymer material is shorter than 5 min at 20 DEG C, and if being applied to repair the cracks of the
asphalt pavement, the prepared polymer material can be solidified after 30 min and the
asphalt pavement has the transportation service. The
asphalt pavement repairing polymer material has a self-repairing function so as to prevent a situation that the repaired pavement is cracked again due to the reduced temperature; the crack repairing process is simple, the repairing speed is high, the construction efficiency is high, the application effect is good, no
pollution generates, the production is clean, and the polymer material is green and environment-friendly.