Mechanism for mixing supercritical fluid and polymer raw material melt

A mechanism for mixing a supercritical fluid and a polymer raw material melt, comprising:

• a hot-melting unit, having a hollow pressing cartridge, wherein a first feeding passage and a first discharging passage are disposed at two ends of the pressing cartridge, respectively, and communicates with a hollow interior of the pressing cartridge and the external space of the pressing cartridge, respectively;
• a pushing member is disposed in the pressing cartridge between the first feeding passage and the first discharging passage, and is used to push, toward the first discharging passage, a polymer raw material entering the hollow interior of the pressing cartridge through the first feeding passage;
• a mixing unit, having a hollow mixing cartridge, wherein a second feeding pass age and a second discharging passage are disposed at two ends of the mixing cartridge, respectively, and the second feeding passage communicates with the first discharging passage, such that the polymer raw material pushed out of the first discharging passage enters a hollow interior of the mixing cartridge through the second feeding passage;
• a mixing rotor is disposed in the mixing cartridge between the second feeding passage and the second discharging passage, and is rotatable in the mixing cartridge, so as to agitate the polymer raw material accommodated in the mixing cartridge;
• a supercritical fluid supplying unit, disposed on the mixing unit and spaced from the hot-melting unit, such that the external supercritical fluid is introduced into the hollow interior of the mixing cartridge, and together with the polymer raw material in the mixing cartridge, is agitated by the mixing rotor and mixed into a homogenous single-phase solution.