Supercritical foaming thermal transformation mixed pressurization system

The utility model discloses the technical field of supercritical foaming, and particularly relates to a supercritical foaming thermal transformation mixed pressurization system which comprises high-pressure DSC test equipment, at least two foaming gas source tanks, a booster pump and a buffer tank, and the booster pump is respectively connected with the foaming gas source tanks through a communication valve; the buffer tank is connected to the communication valve, and the high-pressure reducing valve and the check valve are sequentially connected between the buffer tank and the high-pressure DSC test equipment. According to the supercritical foaming thermal transformation mixed pressurization system, at least two foaming gas source tanks, a communicating valve, a booster pump, a high-pressure reducing valve and a check valve are arranged on the high-pressure DSC test equipment, so that the stable mixed pressurization system capable of rapidly switching multiple gas sources is formed; a gas source capable of b