Impact polypropylene foam plate with high melt strength and method for preparing impact polypropylene foam plate

The invention provides a polypropylene foam plate and a method for preparing the same. Impact polypropylene with high melt strength is used as basic resin for the polypropylene foam plate and is foamed and rolled to obtain the polypropylene foam plate. The impact polypropylene with the high melt strength comprises random copolymerization polypropylene continuous phases and propylene-ethylene copolymer rubber dispersion phases, the content of room-temperature dimethylbenzene soluble matters in the impact polypropylene is higher than or equal to 10% and is lower than or equal to 35% by weight, a proportion of the Mw (molecular weight) of room-temperature trichlorobenzene soluble matters in the impact polypropylene to the Mw of room-temperature trichlorobenzene insoluble matters in the impact polypropylene is higher than 0.4 and is lower than or equal to 1. The polypropylene foam plate and the method have the advantages that the polypropylene foam plate has smooth surfaces and bubbles, is uniform in pore diameter distribution, good in high-temperature and low-temperature impact resistance and high in melt strength and can be widely applied to the fields of automobile components, food and electronic packaging, building decoration and the like; the method is simple and is easy to implement and low in cost, and the like.